Discrimination And Back-up Protection

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Discrimination and Back-up Protection

12

Introduction Discrimination Current discrimination, time discrimination Back-up protection Discrimination limits Series circuit-breakers – miniature circuit-breakers Series circuit-breakers – circuit-breakers Series miniature circuit-breakers – miniature circuit-breakers Back-up protection values Series circuit-breakers – miniature circuit-breakers Series circuit-breakers – circuit-breakers

Siemens NS PS · 2001

12/2 12/3 12/4 12/5 12/6, 12/25 12/10, 12/26 12/24 12/30 12/30

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Discrimination and Back-up Protection Introduction It is not the performance of an individual component that determines the reliability of a low-voltage system, but rather the “teamwork” of all such components. Optimal cooperation of switching devices depends on discriminative line and device protection. Each feeder and each device must be protected as well as possible against overload and short-circuit, without being adversely affected by any switching operations

intended to protect the rest of the system.

feeder and the downstream protective device are protected.

When a system is planned, it is customary to select protective devices with breaking capacities to suit the maximum possible short-circuit currents at the points of installation.

This means in practical terms that at a point in the distribution system with a possible shortcircuit current of e.g. 50 kA, a cost-effective protective device with a breaking capacity of only 20 kA can also be used, entailing however other advantages (e.g. less space required and better protection), if it is given back-up protection by an upstream device with a breaking capacity of at least 50 kA.

IEC and VDE standards allow back-up protection of a switching device by one of the upstream protective devices with an appropriate switching capacity, if thereby both the

Discriminative switching with SIEMENS devices means: maximum possible availability of supply, with at the same time a high degree of system and device protection by way of specific shutdown of the faulty circuit without affecting the other loads.

The internet address “www.siemens.de/energieverteilung” provides you with information on “project planning aids” and with the free software version “KUBS plus” (short-circuit and back-up protection program for calculating short-circuit values, rating cables and conductors and selecting short-circuit breakers) to be down-loaded.

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Discrimination and Back-up Protection Discrimination In series-connection of circuitbreakers, protection against overload and short-circuit is referred to as “discriminative” if, in the direction of power flow, only that device upstream of the fault is tripped. Current discrimination With overload, the discrimination can be worked out from a comparison of the time/current characteristics. With shortcircuit, this comparison produces values that are too low. The reason for this is the behaviour of the releases in the event of short-circuit currents, which deviates from the behaviour in the long-time range, i.e. in the event of overload (Fig. 12/1). With adequately different short-circuit currents at the installation points of two circuitbreakers, the instantaneous short-circuit releases can generally be set so that in the event of short-circuit after the downstream switch, only the latter operates. With almost identically high short-circuit currents at the installation points of the circuitbreakers, grading of the operating currents of the short-circuit releases allows discrimination only up to a certain short-circuit current. This current is referred to as the discrimination limit.

Opening time ANSK-8220a

I Ue = 400 V

3VF

I"k = 20 kA In = 160 A I>

3RV

= 1600 A

Discrimination limit worked out by tests 5 kA

I"k = 6 kA In = 10 A I > = 120 A

Tripping characteristics for circuit-breakers In = rated current I"k = short-circuit current I> = repsponse current

I> = 120 I> = 1600 3RV 3VF Discrimination limit from comparison of characteristics 1600 - 20% = 1280 A

Current

Fig. 12/1 Example of the effect of discrimination of the selection of short-circuit breakers

The limit values for discrimination are shown in the tables on Pages 12/6 to 12/29. If the value worked out from the short-circuit calculation (e.g. to DIN VDE 0102) at the installation point of the downstream switch lies below the discrimination limit read off from the table for the chosen combination, discrimination is assured for all possible short-circuit

occurrences at the installation point. If the short-circuit current worked out at the installation point lies above the discrimination limit, discriminative tripping by the downstream switch is assured only up to the value in the table. The planner must assess whether the value can be considered adequate, as the probability of, for example, the

maximum short-circuit current occurring is low. Otherwise a switch combination must be selected, with a discrimination limit higher than the maximum short-circuit current.

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Discrimination and Back-up Protection Current discrimination, time discrimination 3VF current-limiting circuitbreakers for distribution system protection to IEC 60 947 The 3VF circuit-breakers are available in various shortcircuit breaking capacities. To eliminate the need to create a table for every breaking capacity where the discrimination limit is dependant on the breaking capacity, the discrimination limit is given in the sequence e.g. 40/70/100 kA. The corresponding value is dependant upon the breaking capacities of the upstream and downstream breakers. Decisive is always the smallest value. Upstream circuit-breaker

kA 100 70 40 70

Downstream circuit breaker

kA

40 100 100 70

Discrimination limit

kA

40 70 40 70

Time discrimination Another method of assuring discrimination in the event of almost identically high shortcircuit currents at the installation points is time discrimination. The upstream breaker requires time-delay short-circuit releases, so that in the event of a fault only the downstream breaker isolates the part of the system affected by the fault.

Both the release delays and the operating currents of the shortcircuit releases are graded. In order to avoid undesirably long tripping times with seriesconnection of several circuitbreakers, SIEMENS has developed microprocessor-driven „short-time grading control“ (ZSS) for the 3WN/3WS circuitbreakers.

Opening time

Q4 Q2

This control permits reduction of the tripping delay time to a maximum of 50 ms for the breaker upstream of the shortcircuit.

Q1 A NSK-8221a

A

td = 150 ms tzss = 50 ms

Q1 E K2 NSK-8222

A

A

td = 80 ms tzss = 50 ms

Q2

td = 10 ms tzss = td

E

Q3 E

150 ms

td = 10 ms tzss = td

Q4

80 ms 50 ms 10 ms

A

A

E

Q5

Current

E K1

td

= Max. operative time of the blocking signal or delay time in the event of not-activated short-time grading control tZSS = Delay time of all switches which sense the shortcircuit and receive no blocking signal

Fig. 12/2

12/4

A: E:

Output, transmits blocking signal Input, receives blocking signal Communication lines

Function: A short-circuit at point K1 is sensed by Q4, Q2 and Q1. When the „ZSS“ is activated, Q1 and Q2 are temporarily blocked by Q4 and Q2 respecttively. As Q4 receives no blocking signal, it trips after 10 ms.

A short-circuit at point K2 is sensed only by Q1; as Q1 receives no blocking signal, it trips after 50 ms. Without „ZSS“, tripping would not take place until after 150 ms.

Fig. 12/3

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Discrimination and Back-up Protection Back-up protection When a circuit-breaker or miniature circuit-breaker is selected, it is mandatory that the breaker is able to handle the shortcircuit current at the installation point, either on its own or with the assistance of an upstream protective device (back-up protection). This means that by virtue of the back-up protection, the breaking capacity of the downstream breaker is allowed to be lower than the shortcircuit current at the installation point. This represents a degree of planning freedom, which makes above all for economical system design and also optimizes component protection. The tables on pages 12/30 and 12/31 show the increased permissible short-circuit currents for all breaker combinations, made possible by back-up protection. Appraisal of the back-up protection for the circuit-breakers to IEC 60 947-2 and for the miniature circuit-breakers according to IEC 60 898 was based on the breaking capacity test with test sequence Icu, acc. to IEC 60 947-2.

I"k = 28 kA

I"k = 28 kA

3VF3

3VF3

In = 160 A

In = 160 A

Icn = 40 kA

Icn = 40 kA

I"k = 9 kA

NSK-8223a

I"k = 14 kA

Back-up-protected up to 15 kA

5SX

5SX

In = 16 A

In = 16 A

Icn = 10 kA

Icn = 10 kA

Overload and short-circuit protective without advantage and back-up protection In Rated current I’’k Short-circuit current Icn Rated short-circuit breaking capacity

Overload and short-circuit protective taking into account back-up protection acc. to the table on page 12/30 and 12/31.

Fig. 12/4 Example of effect of back-up protection on the selection of circuit-breakers

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Discrimination and Back-up Protection Discrimination limits Series connection circuit-breakers — miniature circuit-breakers AC 400 V, 50 Hz1) Downstream miniature circuit-breakers

Upstream circuit-breakers 3RV1.1 3RV1.2

In (A) I> (A) Icn (kA) 5SX2...-5 A-Charakteristics

5SX2/5SX4...-6

B-Charakteristics

5SX2 / 5SX4...-7 C-Charakteristics

5SX2...-8 D-Charakteristics

5SX6 / 5SX7...-7 C-Charakteristics 5SX6 / 5SX7...-8 D-Charakteristics

10 120 50

3RV1.3

12 8 10 144 96 120 50 100 100 Discrimination limits (kA) 0.2

2 10 16 32 40

6 30 48 96 120

6 6 6 6 6

0.2

6 10 13 16 20 25 32 40 50

30 50 65 80 100 125 160 200 250

6/10 6/10 6/10 6/10 6/10 6/10 6/10 6/10 6/10

0.2

0.2 0.2

0.5 1 1.6 2 3 4 6 8 10 13 16 20 25 32 40 50 63

5 10 16 20 30 40 60 80 100 130 160 200 250 320 400 500 630

6/10 6/10 6/10 6/10 6/10 6/10 6/10 6/10 6/10 6/10 6/10 6/10 6/10 6/10 6/10 6/10 6

0.2 0.2 0.2 0.2

0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2

2 6 10 16 32 40 50

40 120 200 320 640 800 1000

6 6 6 6 6 6 6

63 80 100

1200 1600 2000

6/10 6/10 6/10

63 80 100

1200 1600 2000

6/10 6/10 6/10

0.1 0.1 0.1 0.1

0.1 0.1 0.1 0.1

12.5 150 50

16 192 50

20 240 50

22 264 50

25 300 50

16 192 50

0.2

0.2

0.6 0.3 0.3

1.2 0.5 0.4

1.5 0.5 0.5

0.2 0.2

0.2 0.2

0.2 0.2 0.2

0.3 0.3 0.2 0.2

0.5 0.4 0.4 0.4

0.5 0.5 0.4 0.4 0.4

0.2 0.2 0.2

0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2

0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2

0.5 0.5 0.5 0.5 0.3 0.3 0.3 0.2 0.2 0.2 0.2

0.6 0.6 0.6 0.6 0.4 0.4 0.4 0.4 0.4 0.4 0.4

0.6 0.6 0.6 0.6 0.5 0.5 0.5 0.4 0.4 0.4 0.4 0.4

0.3 0.3 0.3 0.3 0.2 0.2 0.2 0.2 0.2 0.2

0.2

0.2

0.4 0.3 0.2

0.6 0.4 0.4

0.6 0.4 0.4

0.3 0.2

In = Rated current I> = Response current for instantaneous short-circuit releases Icn = Rated short-circuit breaking capacity acc. to IEC 60 947-2 for mccb´s Rated short-circuit capacity acc. to EN 60 898 for mccb´s

3VL data in preparation and are available on request.

1) In 240/415 V, 50 Hz networks the discrimination limits must be reduced by 10%.

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Discrimination and Back-up Protection Discrimination limits

3RV1.4 20 240 50

25 300 50

32 384 50

40 480 50

45 540 50

50 600 50

16 192 100

20 240 100

25 300 100

32 384 100

40 480 100

50 600 100

63 756 100

75 900 100

90 1080 100

100 1140 100

0.8 0.4 0.3

1.2 0.5 0.4

2.5 0.6 0.6

3 0.8 0.8 0.6

6 1 0.8 0.8

6 1.2 1 0.8 0.8

0.5 0.3

0.8 0.4 0.3

1.5 0.5 0.5

2.5 0.6 0.6

3 0.8 0.6 0.6

6 1.2 1 0.8 0.8

6 1.5 1.5 1.5 1.2

6 2.5 2 2 1.5

6 3 3 2.5 2

6 4 3 3 2

0.3 0.3 0.3 0.3

0.5 0.4 0.4 0.4 0.4

0.6 0.6 0.6 0.6 0.6 0.5

0.8 0.8 0.8 0.8 0.8 0.6 0.6

1 1 1 1 1 0.8 0.8

1.2 1.2 1 1 1 0.8 0.8 1

0.2 0.2 0.2

0.4 0.3 0.3 0.3

0.5 0.5 0.5 0.5 0.5

0.6 0.6 0.6 0.6 0.6 0.6 0.5

0.8 0.8 0.8 0.8 0.8 0.6 0.6

1.2 1 1 1 1 0.8 0.8 0.8

2 1.5 1.5 1.5 1.5 1.5 1.5 1.2 1.2

3 2.5 2 2 2 2 2 1.5 1.5

6 4 3 3 3 3 3 2.5 2.5

6 4 3 3 3 3 3 2.5 2.5

0.5 0.5 0.5 0.5 0.3 0.3 0.3 0.2 0.2 0.2 0.2

0.6 0.6 0.6 0.6 0.4 0.4 0.4 0.4 0.4 0.4 0.4 0.4

1 1 1 1 0.6 0.6 0.6 0.6 0.6 0.6 0.6 0.6 0.5

1 1 1 1 0.8 0.8 0.8 0.6 0.6 0.6 0.6 0.6 0.6 0.6

1.5 1.5 1.5 1.5 1 1 1 0.8 0.8 0.8 0.8 0.8 0.8 0.8

3 3 3 3 1 1 1 1 1 1 1 1 0.8 0.8 0.8

0.4 0.4 0.4 0.4 0.2 0.2 0.2 0.2 0.2 0.2

0.6 0.6 0.6 0.6 0.3 0.3 0.3 0.3 0.3 0.3 0.3

0.8 0.8 0.8 0.8 0.5 0.5 0.5 0.4 0.4 0.4 0.4 0.4

0.8 0.8 0.8 0.8 0.6 0.6 0.6 0.6 0.6 0.6 0.6 0.6 0.5

1 1 1 1 0.8 0.8 0.8 0.6 0.6 0.6 0.6 0.6 0.6 0.6

3 3 3 3 1 1 1 1 1 1 1 1 0.8 0.8 0.6

6/10 6/10 6/10 6/10 2 2 2 1.5 1.5 1.5 1.5 1.5 1.2 1.2 1 1

6/10 6/10 6/10 6/10 2.5 2.5 2.5 2 2 2 2 2 1.5 1.5 1.5 1.2

6/10 6/10 6/10 6/10 5 5 5 3 3 3 3 3 2.5 2.5 2 1.5 1.5

6/10 6/10 6/10 6/10 5 5 5 3 3 3 3 3 2.5 2.5 2 2 1.5

0.5 0.3 0.3

0.6 0.4 0.4

0.8 0.6 0.5 0.5

1.2 0.8 0.6 0.6

1.5 1 0.8 0.6 0.6

1.5 1 0.8 0.6 0.6

0.4 0.2

0.5 0.3 0.3

0.6 0.4 0.4

0.8 0.6 0.5 0.5

1 0.6 0.6 0.6

1.5 1 0.8 0.8 0.6

3 1.5 1.5 1.2 1 1 1

4 2.5 2 1.5 1.5 1.2 1.2

6 3 3 2.5 2 1.5 1.5

6 3 3 2.5 2 1.5 2

1.5

1.5 1.2

1.2

1.2

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Discrimination and Back-up Protection Discrimination limits Series-connection circuit breakers — miniature circuit-breakers AC 400 V, 50 Hz AC 230/400 V, 50 Hz1) Downstream miniature circuit-breakers

Upstream circuit breakers 3VF3

3VF3

adjustable

fixed setting

50

In (A) I> (A) 2) Icn (kA)

500 40/70/ 100

63

80

100

630 800 1000 40/70/ 40/70/ 40/70/ 100 100 100 Discrimination limits (kA) 6 6 6 4.7 6 6 4.7 6 6 3.6 4.6 6 2.5 3.1 6

125

160

50

63

80

100

1250 40/70/ 100

1600 40/70/ 100

400 40/70/ 100

500 40/70/ 100

630 40/70/ 100

800 40/70/ 100

6 6 6 6 6

6 6 6 6 6

6 2.5 2.3 1.8 1.5

6 4 3.7 3 2

6 4 3.7 3 2

6 4.5 4.4 3.5 2.4

5SX2 5SX4 A-Charakteristics

2 10 16 32 40

6 30 48 96 120

6 6 6 6 6

6 1.6 1.4 1.2 1

5SX2 5SX4 B-Charakteristics

6 10 13 16 20 25 32 40 50

30 50 65 80 100 125 160 200 250

6/10 6/10 6/10 6/10 6/10 6/10 6/10 6/10 6/10

2.1 1.8 1.6 1.6 1.6 1.4 1.4 1.3

6/10 6/6.6 5.1 5.1 5.1 3.5 3.5 2.4 2.4

6/10 6/10 6/8.2 6/8.2 6/8.2 4.6 4.6 2.8 2.8

6/10 6/10 6/10 6/10 6/10 5.5 5.5 3.3 3.3

6/10 6/10 6/10 6/10 6/10 6 6 4.5 4.3

6/10 6/10 6/10 6/10 6/10 6/10 6/10 6/6.7 5.8

3.2 2.5 2.3 2.3 2.3 2.1 2.1 1.8

6/10 6/6.2 4.6 4.6 4.6 3.4 3.4 2.3 2.3

6/9.7 4.8 3.8 3.8 3.8 3 3 2.3 2.2

6/10 6/6.2 4.6 4.6 4.6 3.4 3.4 2.4 2.4

5SX2 5SX4 C-Charakteristics

0.5 1 1.5 2 3 4 6 8 10 13 16 20 25 32 40 50

5 10 15 20 30 40 60 80 100 130 160 200 250 320 200 500

6/10 6/10 6/10 6/10 6/10 6/10 6/10 6/10 6/10 6/10 6/10 6/10 6/10 6/10 6/10 6/10

10 10 10 10 1.9 1.9 1.9 1.7 1.7 1.5 1.5 1.5 1.1 1.1 0.9

6/10 6/10 6/10 6/10 6/9.5 6/9.5 6/9.5 4.2 4.2 4.2 4.2 4.2 3.4 3.4 2.2 2.1

6/10 6/10 6/10 6/10 6/10 6/10 6/10 6/7.9 6/7.9 5.5 5.5 5.5 4.5 4.5 2.6 2.5

6/10 6/10 6/10 6/10 6/10 6/10 6/10 6/10 6/10 6/10 6/10 6/10 5.4 5.4 2.8 2.8

6/10 6/10 6/10 6/10 6/10 6/10 6/10 6/10 6/10 6/9.7 6/9.7 6/9.7 5.7 5.7 3.1 3.1

6/10 6/10 6/10 6/10 6/10 6/10 6/10 6/10 6/10 6/10 6/10 6/10 6/8.8 6/8.8 4.8 4.8

6/10 6/10 6/10 6/10 2.5 2.5 2.5 2.3 2.3 2.1 2.1 2.1 1.9 1.9 1.4

6/10 6/10 6/10 6/10 6/8.2 6/8.2 6/8.2 3.7 3.7 3.9 3.9 3.9 3 3 2.1

6/10 6/10 6/10 6/10 6/6.3 6/6.3 6/6.3 3.3 3.3 3.2 3.2 3.2 2.6 2.6 2 1.9

6/10 6/10 6/10 6/10 6/8.2 6/8.2 6/8.2 3.8 3.8 3.8 3.8 3.8 3 3 2.2 2.1

5SX2 5SX4 D-Charakteristics

2 6 10 16 32 40 50

40 120 200 320 640 800 1000

6 6 6 6 6 6 6

2.4 1.4 1.3 1.1

6 4.2 3.9 3.5

6 4.8 5.5 4.2 3.3

6 6 6 4.9 3.9 3.1

6 6 6 6 4.2 3.3 2.9

6 6 6 6 6 4.9 4.8

4.2 2.3 1.9 1.7

6 4.1 1.9 3.3

6 3.8 3.2 2.9

6 4.2 3.7 3.3 2.4

63 80 100

630 800 1000

60 10 10

1.2

1.5 1.5

2 1.5 1.5

3 2.5 2

63 80 100

1200 1600 2000

10 10 10

5SX7 C-Charakteristics

5SX7 D-Charakteristics

1

2.5

In = Rated current I> = Response current for instantaneous short-circuit releases Icn = Rated short-circuit breaking capacity acc. to IEC 60 947-2 for circuit-breakers Rated breaking capacity acc. to IEC 60 898 for mccb’s

3VL data in preparation and are available on request.

1) In 240/415 V, 50 Hz networks the discrimination limits must be reduced by 10%. 2) The discrimination values apply for adjustable releases at maximum setting.

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Discrimination and Back-up Protection Discrimination limits

3VF4

3VF5

3VF6

3VF8

4001250

8002500

3200 45/70/ 100

400800 15756400 45/70/ 100

15000 50/70/ 100

20000

6 6 6 6 6

6 6 6 6 6

6 6 6 6 6

6/10 6/10 6/10 6/10 6/10 6/10 6/10 6 6

6/10 6/10 6/10 6/10 6/10 6/10 6/10 6/10 6/10

6/10 6/10 6/10 6/10 6/10 6/10 6/10 6/10 6/10

6/10 6/10 6/10 6/10 6/10 6/10 6/10 6/10 6/10 6/10 6/10 6/10 6/10 6/10 6/6.5 6/6.2

6/10 6/10 6/10 6/10 6/10 6/10 6/10 6/10 6/10 6/10 6/10 6/10 6/10 6/10 6/6.5 6/6.3

6/10 6/10 6/10 6/10 6/10 6/10 6/10 6/10 6/10 6/10 6/10 6/10 6/10 6/10 6/10 6/10

6 6 6 6 6 6 6

6 6 6 6 6 6 6

6 6 6 6 6 6 5.9

4 3 3

4 3 3

3 2.5 2.5

4 3 2.5

3 2.5

2.5 2 2

3WN1

3WN6

3153200 378048000

70/100

3156300 378075600 65/80/ 100

6 6 6 6 6

6 6 6 6 6

6 6 6 6 6

6 6 6 6 6

6/10 6/10 6/10 6/10 6/10 6/10 6/10 6/10 6/10

6/10 6/10 6/10 6/10 6/10 6/10 6/10 6/10 6/10

6/10 6/10 6/10 6/10 6/10 6/10 6/10 6/10 6/10

6/10 6/10 6/10 6/10 6/10 6/10 6/10 6/10 6/10

6/10 6/10 6/10 6/10 6/10 6/10 6/10 6/10 6/10

6/10 6/10 6/10 6/10 6/10 6/10 6/10 6/10 6/10 6/10 6/10 6/10 6/10 6/10 6/10 6/10

6/10 6/10 6/10 6/10 6/10 6/10 6/10 6/10 6/10 6/10 6/10 6/10 6/10 6/10 6/10 6/10

6/10 6/10 6/10 6/10 6/10 6/10 6/10 6/10 6/10 6/10 6/10 6/10 6/10 6/10 6/10 6/10

6/10 6/10 6/10 6/10 6/10 6/10 6/10 6/10 6/10 6/10 6/10 6/10 6/10 6/10 6/10 6/10

6/10 6/10 6/10 6/10 6/10 6/10 6/10 6/10 6/10 6/10 6/10 6/10 6/10 6/10 6/10 6/10

6/10 6/10 6/10 6/10 6/10 6/10 6/10 6/10 6/10 6/10 6/10 6/10 6/10 6/10 6/10 6/10

6 6 6 6 6 6 6

6 6 6 6 6 6 6

6 6 6 6 6 6 6

6 6 6 6 6 6 6

6 6 6 6 6 6 6

6 6 6 6 6 6 6

6 6 6 6 6 6 6

4 3 3

6 6 5

10 8 6

10 10 10

10 10 10

10 10 10

10 10 10

10 10 10

4 3 3

6 5 5

8 6 6

10 10 10

10 10 10

10 10 10

10 10 10

10 10 10

125

160

125

160

200

250

200

250

315

400

315

1000 40/70/ 100

1280 40/70/ 100

1250 40/70/ 100

1600 40/70/ 100

2000 40/70/ 100

2500 40/70/ 100

2000 45/70/ 100

2500 45/70/ 100

3150 45/70/ 100

4000 45/70/ 100

6 4.9 5 3.7 2.7

6 6 6 6 3.2

6 6 6 6 3.9

6 6 6 6 4.6

6 6 6 6 6

6 6 6 6 6

6 6 6 6 6

6 6 6 6 6

6 6 6 6 6

6/10 6/6.5 5.1 5.1 5.1 3.7 3.7 2.5 2.7

6/10 6/10 6/8.9 6/8.9 6/8.9 5.2 5.2 3.6 3.6

6/10 6/10 6/10 6/10 6/10 6/9.6 6/9.6 6 5.1

6/10 6/10 6/10 6/10 6/10 6/10 6/10 6 5.9

6/10 6/10 6/10 6/10 6/10 6/10 6/10 6 6

6/10 6/10 6/10 6/10 6/10 6/10 6/10 6 6

6/10 6/10 6/10 6/10 6/10 6/10 6/10 6 6

6/10 6/10 6/10 6/10 6/10 6/10 6/10 6 6

6/10 6/10 6/10 6/10 6/8.6 6/8.6 6/8.6 4.6 4.6 4.4 4.4 4.4 3.6 3.6 2.3 2.2

6/10 6/10 6/10 6/10 6/10 6/10 6/10 6/9.4 6/9.4 6/7.5 6/7.5 6/7.5 4.9 4.9 2.9 2.9

6/10 6/10 6/10 6/10 6/10 6/10 6/10 6/10 6/10 6/10 6/10 6/10 6/8 6/8 3.6 3.6

6/10 6/10 6/10 6/10 6/10 6/10 6/10 6/10 6/10 6/10 6/10 6/10 6/9.1 6/9.1 4.8 4.8

6/10 6/10 6/10 6/10 6/10 6/10 6/10 6/10 6/10 6/10 6/10 6/10 6/10 6/10 6/6.5 6/6.2

6/10 6/10 6/10 6/10 6/10 6/10 6/10 6/10 6/10 6/10 6/10 6/10 6/10 6/10 6/6.5 6/6.2

6/10 6/10 6/10 6/10 6/10 6/10 6/10 6/10 6/10 6/10 6/10 6/10 6/10 6/10 6/6.5 6/6.2

6 4.3 4 3.5 2.7 1.5

6 6 6 4.7 3.7 3 2.6

6 6 6 6 6 4 4

6 6 6 6 6 4.9 4.8

6 6 6 6 6 6 6

6 6 6 6 6 6 6

1.2 1.2

1.5 1.5 1.5

2.5 1.5 1.5

3 2 2

4 3 3

2

4 3

Siemens NS PS · 2001

3VF7

65/75

12/9

12

nsk12_06.fm Seite 10 Freitag, 16. Februar 2001 9:45 09

Discrimination and Back-up Protection Discrimination limits Series connection circuit-breakers — circuit-breakers AC 400 V, 50 Hz1) Downstream circuit-breakers

Upstream circuit-breakers 3RV1.1

In (A) I> (A) Icn (kA)

1 12 100

1.25 1.6 2 15 19 24 100 100 100 Discrimination limits (kA)

2.5 30 100

3.2 38 100

4 48 100

5 60 100

6.3 76 100

8 96 50

10 120 50

3RV1.1

1 1.25 1.6 2 2.5 3.2 4 5 6.3 8 10 12

12 15 19 24 30 38 48 60 76 96 120 144

100 100 100 100 100 100 100 100 100 50 50 50

0.1 0.1 0.1 0.1

0.1 0.1 0.1 0.1 0.1 0.1

0.2 0.1 0.1 0.1 0.1 0.1

0.3 0.2 0.1 0.1 0.1 0.1

0.6 0.3 0.2 0.2 0.1 0.1

50 0.4 0.3 0.2 0.2 0.2

3RV1.2

1 1.25 1.6 2 2.5 3.2 4 5 6.3 8 10 12.5 16 20 22 25

12 15 19 24 30 38 48 60 76 96 120 150 192 240 264 300

100 100 100 100 100 100 100 100 100 100 100 100 50 50 50 50

0.1 0.1

0.1 0.1 0.1 0.1 0.1 0.1

0.1 0.2 0.1 0.1 0.1 0.1

0.6 0.2 0.1 0.1 0.1 0.1

50 0.6 0.2 0.2 0.2 0.1

50 30 0.3 0.3 0.2 0.2

3RV1.3

16 20 25 32 40 45 50

192 240 300 384 480 540 600

50 50 50 50 50 50 50

3RV1.4

16 20 25 32 40 50 63 75 90 100

192 240 300 384 480 600 756 900 1080 1140

100 100 100 100 100 100 100 100 100 100

In = Rated current I> = Response current for instantaneous short-circuit releases Icn = Rated short-circuit breaking capacity

3VL data in preparation and are available on request.

1) In 240/415 V, 50 Hz networks the discrimination limits must be reduced by 10%.

12/10

Siemens NS PS · 2001

nsk12_06.fm Seite 11 Freitag, 16. Februar 2001 9:45 09

Discrimination and Back-up Protection Discrimination limits

3RV1.2 12 144 50

1 12 100

1.25 15 100

1.6 19 100

2 24 100

2.5 30 100

3.2 38 100

4 48 100

5 60 100

6.3 76 100

8 96 100

10 120 100

12.5 150 100

16 192 50

20 240 50

22 264 50

25 300 50

50 0.8 0.3 0.3 0.2 0.2

0.1 0.1 0.1

0.1 0.1 0.1 0.1 0.1 0.1

0.2 0.1 0.1 0.1 0.1 0.1

0.6 0.3 0.2 0.2 0.1 0.1

0.4 0.2 0.2 0.2 0.1 0.1

1.2 0.3 0.2 0.2 0.2 0.1

100 1.2 0.4 0.3 0.2 0.2

50 1.2 0.4 0.3 0.2 0.2

50 50 1 0.5 0.4 0.3

50 50 12 1 0.6 0.5 0.4 0.4 0.3 0.3 0.3

50 50 50 1.2 0.6 0.5 0.4 0.4 0.4 0.4 0.4 0.3

50 50 0.4 0.5 0.3 0.2

0.1 0.1

0.1 0.1 0.1 0.1 0.1

0.1 0.2 0.1 0.1 0.1 0.1

2 0.3 0.2 0.2 0.2 0.1

100 0.4 0.2 0.2 0.1 0.1

100 0.8 0.2 0.2 0.2 0.2

100 100 0.5 0.5 0.3 0.3

50 50 0.4 0.6 0.4 0.3

50 50 50 1.5 0.8 0.6 0.4

50 50 50 50 1.5 0.6 0.6 0.4 0.4 0.4 0.4

50 50 50 50 2 0.6 0.6 0.4 0.5 0.4 0.5 0.4 0.4 0.4 0.4

12

Siemens NS PS · 2001

12/11

nsk12_06.fm Seite 12 Freitag, 16. Februar 2001 9:45 09

Discrimination and Back-up Protection Discrimination limits Series connection circuit-breakers — circuit-breakers AC 400 V, 50 Hz1) Downstream circuit-breaker

Upstream circuit-breakers 3RV1.3

In (A) I > (A) Icn (kA)

16 192 50

20 25 240 300 50 50 Discrimination limits(kA) 50 50 50 50 1.5 50 0.6 1.2 0.4 0.6 0.3 0.5 0.4 0.4 0.4 0.4 0.4

32 384 100

40 480 50

45 540 50

50 600 50

50 50 50 3 1.2 0.8 0.6 0.6 0.5 0.5 0.5 0.5

50 50 50 50 2 1.2 0.8 0.6 0.6 0.6 0.6 0.6

50 50 50 50 3 1.5 1 0.8 0.8 0.6 0.6 0.6

50 50 50 50 5 2 1.2 1 0.8 0.8 0.8 0.8

50 50 50 50 8 2 1 0.6 0.6 0.6 0.6 0.5 0.5

50 50 50 50 50 3 1.5 0.8 0.6 0.8 0.8 0.6 0.6

50 50 50 50 50 6 2.5 1.5 0.6 1 1 0.8 0.8 0.6

50 50 50 50 50 12 3 1.5 0.6 1.2 1 1 0.8 0.8 0.6 0.6

3RV1.1

1 1.25 1.6 2 2.5 3.2 4 5 6.3 8 10 12

12 15 19 24 30 38 48 60 76 96 120 144

100 100 100 100 100 100 100 100 100 50 50 50

50 50 0.6 0.4 0.3 0.3

3RV1.2

1 1.25 1.6 2 2.5 3.2 4 5 6.3 8 10 12.5 16 20 22 25

12 15 19 24 30 38 48 60 76 96 120 150 192 240 264 300

100 100 100 100 100 100 100 100 100 100 100 100 50 50 50 50

50 50 6 0.8 0.5 0.4

3RV1.3

16 20 25 32 40 45 50

192 240 300 384 480 540 600

50 50 50 50 50 50 50

0.5 0.5 0.4

0.6 0.6 0.5

0.6 0.6 0.6

0.8 0.8 0.6 0.6 0.6

3RV1.4

16 20 25 32 40 50 63 70 90 100

192 240 300 384 480 600 756 900 1080 1140

100 100 100 100 100 100 100 100 100 100

0.5 0.5 0.4

0.6 0.6 0.5

0.6 0.6 0.6

0.8 0.8 0.6 0.6 0.6

50 50 50 2.5 1 0.6 0.4

50 50 50 50 1.5 0.6 0.6 0.4 0.5 0.4 0.4 0.4

In = Rated current I> = Response current for instantaneous short-circuit releases Icn = Rated short-circuit breaking capacity

3VL data in preparation and are available on request.

1) In 240/415 V, 50 Hz networks the discrimination limits must be reduced by 10%.

12/12

Siemens NS PS · 2001

nsk12_06.fm Seite 13 Freitag, 16. Februar 2001 9:45 09

Discrimination and Back-up Protection Discrimination limits

3RV1.4 16 192 100

20 240 100

25 300 100

32 384 100

40 480 100

50 600 100

63 756 100

75 900 100

90 1080 100

100 1140 100

100 100 0.6 0.4 0.3 0.2

100 100 1.5 0.6 0.4 0.3

100 100 100 1.2 0.6 0.5 0.4 0.4 0.4 0.4 0.4

100 100 100 2.5 1.2 0.6 0.6 0.6 0.5 0.5 0.5 0.4

100 100 100 100 1.5 1 0.6 0.6 0.6 0.6 0.6 0.5

100 100 100 100 3 1.5 1 1.5 0.8 0.8 0.6 0.6

100 100 100 100 100 5 2 1.2 1.2 1 1 1

100 100 100 100 100 100 3 2 2 1.5 1.2 1.2

100 100 100 100 100 100 20 4 2.5 2 2 1.5

100 100 100 100 100 100 100 4 3 2 2 1.5

100 100 100 1.2 0.6 0.4 0.3

100 100 100 8 1.2 0.6 0.5 0.3 0.3

100 100 100 100 4 0.6 0.6 0.4 0.5 0.4 0.4 0.4

100 100 100 100 15 2.5 1.1 0.6 0.6 0.6 0.6 0.5 0.5

100 100 100 100 100 4 1.5 0.8 0.6 0.8 0.6 0.6 0.6

100 100 100 100 100 15 3 1.5 0.6 1.2 1 0.8 0.8 0.6

100 100 100 100 100 100 20 4 2.5 2 1.5 1.2 1.2 1 1 0.8

100 100 100 100 100 100 100 10 4 3 2 2 1.5 1.2 1.2 1.2

100 100 100 100 100 100 100 20 10 6 4 3 2.5 2 1.5 1.5

100 100 100 100 100 100 100 25 10 6 4 3 2.5 2 2 1.5

0.5 0.4 0.4

0.6 0.5 0.5

0.8 0.6 0.6

1.2 1 1 0.8 0.6 0.6

1.5 1.2 1.2 1 0.6 0.6

2.5 2 1.5 1.2 0.6 0.6

2.5 2 1.5 1.5 1.5 0.6 0.6

0.4 0.4 0.4

0.5 0.5 0.5

0.6 0.6 0.6 0.6

1.2 1 1 0.8 0.6 0.8

1.5 1.2 1.2 1 0.6 1

2.5 2 1.5 1.2 0.6 1.2

2.5 2 1.5 1.5 0.6 1.2

12

Siemens NS PS · 2001

12/13

nsk12_06.fm Seite 14 Freitag, 16. Februar 2001 9:45 09

Discrimination and Back-up Protection Discrimination limits Series connection circuit-breakers — circuit-breakers AC 400 V, 50 Hz1) Downstream circuit-breakers

In (A) I> (A)2 ) Icn (kA) 3RV1.1

1 1.25 1.6 2 2.5 3.2 4 5 6.3 8 10 12

12 15 19 24 30 38 48 60 76 96 120 144

100 100 100 100 100 100 100 100 100 50 50 50

3RV1.2

1 1.25 1.6 2 2.5 3.2 4 5 6.3 8 10 12.5 16 20 22 25 16 20 25 32 40 45 50 16 20 25 32 40 50 63 75 90 100 50 63 80 100 125 160 16 20 25 32 40 50 63 80 100 125 160 200 225 80 100 160 205

12 15 19 24 30 38 48 60 76 96 120 150 192 240 264 300 192 240 300 384 480 540 600 192 240 300 384 480 600 756 900 1080 1140 500 630 800 1000 1250 1600 400 400 400 400 400 400 500 630 800 1000 1280 2400 2400 1200 1500 2400 2600

100 100 100 100 100 100 100 100 100 100 100 100 50 50 50 50 50 50 50 50 50 50 50 100 100 100 100 100 100 100 100 100 100 40/70/100 40/70/100 40/70/100 40/70/100 40/70/100 40/70/100 25/40/70 25/40/70 25/40/70 25/40/70/100 25/40/70/100 25/40/70/100 25/40/70/100 25/40/70/100 25/40/70/100 25/40/70/100 25/40/70/100 40/70/100 40/70/100 40/70 40/70 40/70 40/70

63 100 160

1000 1500 2400

70 70 70

100 160

1500 2400

70 70

3RV1.3

3RV1.4

3VF3 for line protection adjustable

3VF3 for line protection fixed setting

3VF3 for motor protection

3VF3 for starter combinations 3VF3 Non-automatic circuitbreakers

Upstream circuit-breakers 3VF3 adjustable 50 63 80 500 630 800 40/70/100 40/70/100 40/70/100 Discrimination limits (kA)3 ) 40/70/100 40/70/100 40/70/100 40/70/100 40/70/100 40/70/100 40/70/100 40/70/100 40/70/100 40/70/100 40/70/100 40/70/100 25 40/70/100 40/70/100 1.5 40/70/100 40/70/100 1.2 6 40/70/100 1 3 6 0.8 2.5 6 0.8 1.5 2 0.8 1.5 2.5 0.8 1.2 1.5 40/70/100 40/70/100 40/70/100 40/70/100 40/70/100 40/70/100 40/70/100 5 2.5 2 1.5 1.2 1 0.8 0.6 0.6 1 0.8 0.6 0.6

40/70/100 40/70/100 40/70/100 40/70/100 40/70/100 40/70/100 40/70/100 40/70/100 40/70/100 40/70/100 5 6 3 2.5 1.5 1.5 4 2.5 2 1.2 0.6 0.6

0.8 0.8 0.6 0.6

3 2 1.5 1.2 0.6 0.8

100 1000 40/70/100

125 1250 40/70/100

160 1600 40/70/100

200 2000 40/70/100

3VF3 fixed setting 50 400 25/40/70/100

40/70/100 40/70/100 40/70/100 40/70/100 40/70/100 40/70/100 40/70/100 10 6 2.5 2.5 2

40/70/100 40/70/100 40/70/100 40/70/100 40/70/100 40/70/100 40/70/100 40/70/100 8 3 3 2.5

40/70/100 40/70/100 40/70/100 40/70/100 40/70/100 40/70/100 40/70/100 40/70/100 40/70/100 8 5 4

40/70/100 40/70/100 40/70/100 40/70/100 40/70/100 40/70/100 40/70/100 40/70/100 40/70/100 15 8 6

25/40/70/100 25/40/70/100 25/40/70/100 25/40/70/100 25/40/70/100 10 1.5 1.2 1.2 1 1 1

40/70/100 40/70/100 40/70/100 40/70/100 40/70/100 40/70/100 40/70/100 40/70/100 40/70/100 40/70/100 6 6 5 3 2 2 40/70/50 4 3 1.5 1.5 1.5 1.5 5 3 2.5 1.2 1.5 1.5

40/70/100 40/70/100 40/70/100 40/70/100 40/70/100 40/70/100 40/70/100 40/70/100 40/70/100 40/70/100 6 6 6 4 3 2.5 40/70/50 6 4 2 2 1.5 1.5 8 3 3 1.5 1.5 1.5

40/70/100 40/70/100 40/70/100 40/70/100 40/70/100 40/70/100 40/70/100 40/70/100 40/70/100 40/70/100 40/70/100 40/70/100 6 4 3 3 40/70/50 6 4 2.5 2 2 2 6 4 3 2.5 1.5 2 1.5 1.2 1.2

1.3 1.3 1.3

1.5 1.5 1.5 1.5

1.2 1.2 1.2 1.2 1.2 1.2

1.3 1.3 1.3 1.3 1.3 1.3 1.3 1.3

1.5 1.5 1.5 1.5 1.5 1.5 1.5 1.5 1.5

40/70/100 40/70/100 40/70/100 40/70/100 40/70/100 40/70/100 40/70/100 40/70/100 40/70/100 40/70/100 40/70/100 40/70/100 40/50/50 40/50/50 8 10 40/70/50 40/70/50 10 6 5 4 4 40/70/100 40 6 6 3 3 3 2.5 2.5 2.5 2.5 2.5 2.5 2 2 2 2.5 2.5 2.5 2.5 2.5 2.5 2.5 2.5 2 2 2

25/40/70/100 25/40/70/100 25/40/70/100 25/40/70/100 25/40/70/100 25/40/70/100 25/40/70/100 20 6 4 2 2 1.2 1 1 0.8 1.5 1.2 1 0.8

1.2

40/70/100 40/70/100 40/70/100 40/70/100 40/70/100 40/70/100 40/70/100 40/70/100 40/70/100 40/70/100 40/70/100 40/70/100 40/50/50 40/50/50 6 6 40/70/50 40/70/50 10 5 4 3 3 40/70/100 40 5 5 2 2.5 2 1.5 2 1.5 1.9 1.9 1.9 1.9 1.9

1.5

1.9 1.9 1.9 1.9 1.9 1.9 1.9 1.9 1.9 1.9

1.7

1.7

1.7

2 2

1.2 1 0.8 0.8 0.6

2

1) In 240/415 V, 50 Hz networks the discrimination limits must be reduced by 10%. 2) The discrimination values for the upstream circuit-breakers apply for adjustable releases at maximum setting. 3) The corresponding value is dependant upon the breaking capacities of the upstream and downstream breakers (See page 12/4).

12/14

Siemens NS PS · 2001

nsk12_06.fm Seite 15 Freitag, 16. Februar 2001 9:45 09

Discrimination and Back-up Protection Discrimination limits

3VF4 63 500 25/40/70/100

80 630 25/40/70/100

100 800 25/40/70/100

125 1000 25/40/70/100

160 1280 25/40/70/100

200 2400 40/70/100

225 2400 40/70/100

125 1250 40/70/100

160 1600 40/70/100

200 2000 40/70/100

250 2500 40/70/100

25/40/70/100 25/40/70/100 25/40/70/100 25/40/70/100 25/40/70/100 25/40/70/100 6 3 2.5 1.5 1.5 1.2

25/40/70/100 25/40/70/100 25/40/70/100 25/40/70/100 25/40/70/100 25/40/70/100 4 2.5 2 1.5 1.5 1.2

25/40/70/100 25/40/70/100 25/40/70/100 25/40/70/100 25/40/70/100 25/40/70/100 6 3 2.5 1.5 1.5 1.2

25/40/70/100 25/40/70/100 25/40/70/100 25/40/70/100 25/40/70/100 25/40/70/100 25/40/70/100 5 4 2 2 1.5

25/40/70/100 25/40/70/100 25/40/70/100 25/40/70/100 25/40/70/100 25/40/70/100 25/40/70/100 25/40/70/100 6 2.5 3 2.5

40/70/100 40/70/100 40/70/100 40/70/100 40/70/100 40/70/100 40/70/100 40/70/100 40/70/100 40/50/50 40/50/50 8

40/70/100 40/70/100 40/70/100 40/70/100 40/70/100 40/70/100 40/70/100 40/70/100 40/70/100 40/50/50 40/50/50 8

40/70/100 40/70/100 40/70/100 40/70/100 40/70/100 40/70/100 40/70/100 40/70/100 40/70/100 4 4 3

40/70/100 40/70/100 40/70/100 40/70/100 40/70/100 40/70/100 40/70/100 40/70/100 40/70/100 8 5 4

40/70/100 40/70/100 40/70/100 40/70/100 40/70/100 40/70/100 40/70/100 40/70/100 40/70/100 40/50/50 10 8

40/70/100 40/70/100 40/70/100 40/70/100 40/70/100 40/70/100 40/70/100 40/70/100 40/70/100 40/50/50 10 8

25/40/70/100 25/40/70/100 25/40/70/100 25/40/70/100 25/40/70/100 25/40/70/100 25/40/70/100 25/40/70/100 25/40/40/40 25/30/30/30 5 4 3 2 1.5 1.5 3 2 1.5 1 1 0.8

25/40/70/100 25/40/70/100 25/40/70/100 25/40/70/100 25/40/70/100 25/40/70/100 25/40/70/100 25/40/70/100 25 15 5 3 2.5 1.5 1.5 1.2 3 2 1.2 1 1 0.8

25/40/70/100 25/40/70/100 25/40/70/100 25/40/70/100 25/40/70/100 25/40/70/100 25/40/70/100 25/40/70/100 25/40/40/40 25/30/30/30 5 4 3 2 1.5 1.5 4 2.5 1.5 1.2 0.6 0.6

3 2 1.5 1 1

2.5 1.5 1.5 1 1

3 2 1.5 1.2 0.6 1

25/40/70/100 25/40/70/100 25/40/70/100 25/40/70/100 25/40/70/100 25/40/70/100 25/40/70/100 25/40/70/100 25/40/40/40 25 5 5 3 2.5 2 1.5 4 2.5 2 1.5 0.6 0.6 1.2 3 2 2 1.2 0.6 1

25/40/70/100 25/40/70/100 25/40/70/100 25/40/70/100 25/40/70/100 25/40/70/100 25/40/70/100 25/40/70/100 25/40/70/100 25/40/70/100 6 6 6 4 3 2.5 8 5 3 2 2 1.5 1.5 5 3 3 2 1.5 1.5 1.5

1.5 1.5 1.5 1.5

40/70/100 40/70/100 40/70/100 40/70/100 40/70/100 40/70/100 40/70/100 40/70/100 40/70/100 40/70/100 40/70/100 40/70/100 40/50/50 40/50/50 6 6 40/50/50 40/50/50 40/50/50 5 4 3 3 40/70/100 40/70/100 6 5 2 2.5 2.5 1.5 1.5 1.5 1.5 1.5 1.5

40/70/100 40/70/100 40/70/100 40/70/100 40/70/100 40/70/100 40/70/100 40/70/100 40/70/100 40/70/100 40/70/100 40/70/100 40/50/50 40/50/50 40/50/50 40/50/50 40/50/50 40/50/50 40/50/50 40/50/50 8 6 6 40/70/100 40/70/100 40 10 3 4 3 3 2.5 2 2.8 2.6 2.6 2.6 2.6

1.3 1.3 1.3 1.3 1.3 1.3 1.3 1.3 1

1.5 1.5 1.5 1.5 1.5 1.5 1.5 1.5 1.5 1.5

40/70/100 40/70/100 40/70/100 40/70/100 40/70/100 40/70/100 40/70/100 40/70/100 40/70/100 40/70/100 40/70/100 40/70/100 40/50/50 40/50/50 40/50/50 40/50/50 40/50/50 40/50/50 40/50/50 8 6 5 5 40/70/100 40 8 8 4 4 3 3 3 3 3 3 3 2.8 2.8 2.5 3 3 3 3 3 3 2.8 2.8 2.5 2.5 2.5

40/70/100 40/70/100 40/70/100 40/70/100 40/70/100 40/70/100 40/70/100 40/70/100 40/70/100 40/70/100 40/70/100 40/70/100 40/50/50 10 5 5 40/50/50 40/50/50 10 4 3 2.5 2.5 40/70/100 12 4 4 2 2 2 1.2 1.2

1.3 1.3 1.3

40/70/100 40/70/100 40/70/100 40/70/100 40/70/100 40/70/100 40/70/100 40/70/100 40/70/100 40/70/100 40/70/100 40/70/100 40/50/50 40/50/50 40/50/50 40/50/50 40/50/50 40/50/50 40/50/50 8 6 5 5 40/70/100 40 8 8 4 4 3 3 3 3 3 3 3 2.8 2.8 2.5 3 3 3 3 3 3 2.8 2.8 2.5 2.5 2.5

1.5 1.5 1.5 1.5 1.5 1.5 1.5 1.5

2.8 2.8 2.8 2.8 2.8 2.8 2.6 2.6 2.4 2.4

40/70/100 40/70/100 40/70/100 40/70/100 40/70/100 40/70/100 40/70/100 40/70/100 40/70/100 40/70/100 40/70/100 40/70/100 40/50/50 40/50/50 40/50/50 40/50/50 40/50/50 40/50/50 40/50/50 40/50/50 8 6 5 40/70/100 40/70/100 12 10 3 4 3 3 2.5 2.5 3 2.9 2.9 2.8 2.8 2.6 3 3 3 3 3 3 2.9 2.9 2.6 2.6 2.6

2.5

2.5

2.3

2.5

2.5 2.5

2.5 2.5

2.4 2.4

2.6 2.6 2.6

2.5

2.5

2.5

2.6 2.6

In = Rated current I> = Response current for instantaneous short-circuit releases Icn = Rated short-circuit breaking capacity

Siemens NS PS · 2001

1.3 1.3

1.3 1.3 1.3 1.3 1.3 1.3 1.3

12

3VL data in preparation and are available on request.

12/15

nsk12_06.fm Seite 16 Freitag, 16. Februar 2001 9:45 09

Discrimination and Back-up Protection Discrimination limits Series connection circuit breakers — circuit-breakers AC 400 V, 50 Hz1) Downstream circuit-breakers

Upstream circuit-breakers 3VF5 In (A) I > (A)3) Icn (kA)

200 5000 45/70/100

3VF6

250 315 2500 3150 45/70/100 45/70/100 Discrimination limits (kA)4 ) 45/70/100 45/70/100 45/70/100 45/70/100 45/70/100 45/70/100 45/70/100 45/70/100 45/70/100 45/70/100 45/70/100 45/70/100 45/70/100 45/70/100 45/70/100 45/70/100 45/70/100 45/70/100 8 45/50/50 6 10 5 8

400 4000 45/70/100

315 3200 45/70/100

400 4000 45/70/100

45/70/100 45/70/100 45/70/100 45/70/100 45/70/100 45/70/100 45/70/100 45/70/100 45/70/100 45/50/50 45/50/50 45/50/50

45/70/100 45/70/100 45/70/100 45/70/100 45/70/100 45/70/100 45/70/100 45/70/100 45/70/100 45/50/50 45/50/50 45/50/50

45/70/100 45/70/100 45/70/100 45/70/100 45/70/100 45/70/100 45/70/100 45/70/100 45/70/100 45/50/50 45/50/50 45/50/50

45/70/100 45/70/100 45/70/100 45/70/100 45/70/100 45/70/100 45/70/100 45/70/100 45/70/100 45/70/100 45/70/100 45/70/100 45/50/50 45/50/50 45/50/50 45/50/50 45/50/50 45/50/50 25 10 8 8 8 45/70/100 30 12 10 6 6 5 4 4 4 3.4 3.4 3.4 3.4 3.4 3.4 3.4 3.4 3.4 3.4 3.4 3.4 3.4 3.4 3.45 3.4 3.4 3 3 3.4 3.3 3.4 3.2

45/70/100 45/70/100 45/70/100 45/70/100 45/70/100 45/70/100 45/70/100 45/70/100 45/70/100 45/70/100 45/70/100 45/70/100 45/50/50 45/50/50 45/50/50 45/50/50 45/50/50 45/50/50 45/50/50 45/50/50 45/50/50 25 45/50/50 45/70/100 45/70/100 40 30 10 10 8 6 6 6 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4.2 4.2 4 4 4 4

45/70/100 45/70/100 45/70/100 45/70/100 45/70/100 45/70/100 45/70/100 45/70/100 45/70/100 45/70/100 45/70/100 45/70/100 45/50/50 45/50/50 45/50/50 45/50/50 45/50/50 45/50/50 45/50/50 45/50/50 45/50/50 45/50/50 45/50/50 45/70/100 45/70/100 45/70/100 45/70/100 25 15 10 10 10 8 5.6 5.6 5.6 5.2 5.1 5 5.6 5.6 5.6 5.6 5.6 5.6 5.6 5.6 5.6 5.6 5 5 5 5 5 5 5

3RV1.1

1 1.25 1.6 2 2.5 3.2 4 5 6.3 8 10 12

12 15 19 24 30 38 48 60 76 96 120 144

100 100 100 100 100 100 100 100 100 50 50 50

45/70/100 45/70/100 45/70/100 45/70/100 45/70/100 45/70/100 45/70/100 45/70/100 45/70/100 45/50/50 8 6

3RV1.2

1 1.25 1.6 2 2.5 3.2 4 5 6.3 8 10 12.5 16 20 22 25 16 20 25 32 40 45 50 16 20 25 32 40 50 63 75 90 100 50 63 80 100 125 160 16 20 25 32 40 50 63 80 100 125 160 200 225 80 100 160 205

12 15 19 24 30 38 48 60 76 96 120 150 192 240 264 300 192 240 300 384 480 540 600 192 240 300 384 480 600 756 900 1080 1140 500 630 800 1000 1250 1600 400 400 400 400 400 400 500 630 800 1000 1280 2400 2400 1200 1500 2400 2600

100 100 100 100 100 100 100 100 100 100 100 100 50 50 50 50 50 50 50 50 50 50 50 100 100 100 100 100 100 100 100 100 100 40/70/100 40/70/100 40/70/100 40/70/100 40/70/100 40/70/100 25/40/70 25/40/70 25/40/70 25/40/70/100 25/40/70/100 25/40/70/100 25/40/70/100 25/40/70/100 25/40/70/100 25/40/70/100 25/40/70/100 40/70/100 40/70/100 40/70 40/70 40/70 40/70

45/70/100 45/70/100 45/70/100 45/70/100 45/70/100 45/70/100 45/70/100 45/70/100 45/70/100 45/70/100 45/70/100 45/70/100 45/50/50 45/50/50 45/50/50 45/50/50 45/50/50 45/50/50 45/50/50 45/50/50 10 6 5 45/70/100 45/70/100 40 10 2.5 4 3 2 2 2 2.2 2 2 2 2

45/70/100 45/70/100 45/70/100 45/70/100 45/70/100 45/70/100 45/70/100 45/70/100 45/70/100 45/70/100 45/70/100 45/70/100 45/50/50 12 6 6 45/50/50 45/50/50 10 4 4 3 3 45/70/100 12 5 5 2.5 2.5 2.5 2 2 2 2.3 2.1 2 2 2

2.2 2.2 2.2 2.2 2.2 2.2 2 2 2 2 2

2.3 2.3 2.3 2.3 2.3 2.3 2.1 2 2 2 2

45/70/100 45/70/100 45/70/100 45/70/100 45/70/100 45/70/100 45/70/100 45/70/100 45/70/100 45/70/100 45/70/100 45/70/100 45/50/50 45/50/50 45/50/50 45/50/50 45/50/50 45/50/50 45/50/50 6 6 4 4 45/70/100 40 8 6 4 4 3 3 3 3 3 2.5 2.5 2.5 2.5 2.5 3 3 3 3 3 3 2.5 2.5 2.5 2.5 2.5

1.7

1.7

2.5

1000 1500 2400

70 70 70

2

2

2.5 2.5

for starter combinations

63 100 160

3.4 3.4 3

4 4 4

6 6 5

3VF3 Non-automatic circuit-breakers

100 160

1500 2400

70 70

2.5

3 3

4 4

6 5

3RV1.3

3RV1.4

3VF3 for line protection adjustable

3VF3 for line protection fixed setting

3VF3 for motor protection

3VF3

1) 2) 3) 4)

In 240/415 V, 50 Hz networks the discrimination limits must be reduced by 10%. For 3VF7, 3VF8 and 3WN1, the delay time td must also be set to 100 ms or higher. The discrimination values for the upstream circuit-breakers apply for adjustable releases at maximum setting. The corresponding value is dependant upon the breaking capacities of the upstream and downstream breakers (See page 12/4).

12/16

Siemens NS PS · 2001

nsk12_06.fm Seite 17 Freitag, 16. Februar 2001 9:45 09

Discrimination and Back-up Protection Discrimination limits

3VF72)

3VF82 )

3WN1 2)

500 5000 45/70/100

630 6300 45/70/100

800 6400 500

800-1250 15000 50/70/100

1600-2500 20000 70/100

315 3780 65

400 4800 65

500 6000 65

630 7560 50/80

800 9600 50/80

1000 12000 50/80

45/70/100 45/70/100 45/70/100 45/70/100 45/70/100 45/70/100 45/70/100 45/70/100 45/70/100 45/50/50 45/50/50 45/50/50

45/70/100 45/70/100 45/70/100 45/70/100 45/70/100 45/70/100 45/70/100 45/70/100 45/70/100 45/50/50 45/50/50 45/50/50

50 50 50 50 50 50 50 50 50 50 50 50

50/70/100 50/70/100 50/70/100 50/70/100 50/70/100 50/70/100 50/70/100 50/70/100 50/70/100 50 50 50

70/100 70/100 70/100 70/100 70/100 70/100 70/100 70/100 70/100 50 50 50

65 65 65 65 65 65 65 65 65 50 50 50

65 65 65 65 65 65 65 65 65 50 50 50

65 65 65 65 65 65 65 65 65 50 50 50

50/80 50/80 50/80 50/80 50/80 50/80 50/80 50/80 50/80 50 50 50

50/80 50/80 50/80 50/80 50/80 50/80 50/80 50/80 50/80 50 50 50

50/80 50/80 50/80 50/80 50/80 50/80 50/80 50/80 50/80 50 50 50

45/70/100 45/70/100 45/70/100 45/70/100 45/70/100 45/70/100 45/70/100 45/70/100 45/70/100 45/70/100 45/70/100 45/70/100 45/50/50 45/50/50 45/50/50 45/50/50 45/50/50 45/50/50 45/50/50 45/50/50 45/50/50 45/50/50 45/50/50 45/70/100 45/70/100 45/70/100 45/70/100 45/70/100 45/70/100 12 12 12 10 6.4 6.4 6.4 5.5 5.5 5.5 6.4 6.4 6.4 6.4 6.4 6.4 6.4 6.4 6 6 6 6 6 6.3 6 6 6

45/70/100 45/70/100 45/70/100 45/70/100 45/70/100 45/70/100 45/70/100 45/70/100 45/70/100 45/70/100 45/70/100 45/70/100 45/50/50 45/50/50 45/50/50 45/50/50 45/50/50 45/50/50 45/50/50 45/50/50 45/50/50 45/50/50 45/50/50 45/70/100 45/70/100 45/70/100 45/70/100 45/70/100 45/70/100 30 15 12 12 8.3 8 8 8 8 6 8.3 8.3 8.3 8.3 8.3 8.3 8 8 8 8 8 6 6 6 6 6 6

50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 30 15 12 12 8.3 8 8 8 8 6 8.3 8.3 8.3 8.3 8.3 8.3 8 8 8 8 8 6 6 6 6 6 6

50/70/100 50/70/100 50/70/100 50/70/100 50/70/100 50/70/100 50/70/100 50/70/100 50/70/100 50/70/100 50/70/100 50/70/100 50 50 50 50 50 50 50 50 50 50 50 50/70/100 50/70/100 50/70/100 50/70/100 50/70/100 50/70/100 50/70/100 50/70/100 50/70/100 50/70/100 40/70/70 40/70/70 40/70/70 40/70/70 40/70/70 40/65 25/40/70 25/40/70 25/40/70 25/40/70/70 25/40/70/70 25/40/70/70 25/40/70/70 25/40/70/70 25/40/65/65 25/40/65/65 25/40/65/65 40/65/65 40/65/65 40/70/70 40/70/70 40/70/70 40/70/70

70/100 70/100 70/100 70/100 70/100 70/100 70/100 70/100 70/100 70/100 70/100 70/100 50 50 50 50 50 50 50 50 50 50 50 70/100 70/100 70/100 70/100 70/100 70/100 70/100 70/100 70/100 70/100 40/70/100 40/70/100 40/70/100 40/70/100 40/70/100 40/70/100 25/40/65 25/40/65 25/40/65 25/40/70/100 25/40/70/100 25/40/70/100 25/40/70/100 25/40/70/100 25/40/70/100 25/40/70/100 25/40/70/100 40/70/100 40/70/100 40/70 40/70 40/70 40/70

65 65 65 65 65 65 65 65 65 65 65 65 50 50 50 40 30 25 20 15 15 12 12 30 25 15 12 10 10 10 8 8 8 7 7 7 6.4 6.4 6.4 7 7 7 7 7 7 7 7 7 7 7 6.7 6.7 7 7 7 7

65 65 65 65 65 65 65 65 65 65 65 65 50 50 50 50 40 40 30 25 25 25 25 65 65 25 25 15 15 12 12 12 12 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 11 11 10 10 10 10

65 65 65 65 65 65 65 65 65 65 65 65 50 50 50 50 50 50 50 50 40 40 40 65 65 65 30 30 25 20 20 20 20 15 15 15 15 15 15 15 15 15 15 15 15 15 15 15 15 15 15 15 15 15 15 15

50/80 50/80 50/80 50/80 50/80 50/80 50/80 50/80 50/80 50/80 50/80 50/80 50 50 50 50 50 50 50 50 50 50 50 50/80 50/80 50/80 50/80 50/80 40 30 30 30 30 28 25 25 25 25 22 28 28 28 28 28 28 25 25 22 22 22 22 22 22 22 22 22

50/80 50/80 50/80 50/80 50/80 50/80 50/80 50/80 50/80 50/80 50/80 50/80 50 50 50 50 50 50 50 50 50 50 50 50/80 50/80 50/80 50/80 50/80 50/80 50/80 50/80 50/80 50/80 40/50/50 40/50/50 40/50/50 40/50/50 40/50/50 35 25/40/50 25/40/50 25/40/50 25/40/50/50 25/40/50/50 25/40/50/50 25/40/50/50 25/40/50/50 25/35/35/35 25/35/35/35 25/35/35/35 35 35 35 35 35 35

50/80 50/80 50/80 50/80 50/80 50/80 50/80 50/80 50/80 50/80 50/80 50/80 50 50 50 50 50 50 50 50 50 50 50 50/80 50/80 50/80 50/80 50/80 50/80 50/80 50/80 50/80 50/80 40/70/80 40/70/80 40/70/80 40/70/80 40/70/80 40/70/80 25/40/80 25/40/80 25/40/80 25/40/70/80 25/40/70/80 25/40/70/80 25/40/70/80 25/40/70/80 25/40/70/80 25/40/70/80 25/40/70/80 40/70/80 40/70/80 40/70 40/70 40/70 40/70

7 6.5 6

8 6 6

8 6 6

50/70 50/70 50/70

70 70 70

7.3 6.9 6.7

10 10 10

15 15 15

22 22 22

35 35 35

70 70 70

6.5 6

6 6

6 6

70 70

70 70

In = Rated current I> = Response current for instantaneous short-circuit releases Icn = Rated short-circuit breaking capacity

Siemens NS PS · 2001

12

3VL data in preparation and are available on request.

12/17

nsk12_06.fm Seite 18 Freitag, 16. Februar 2001 9:45 09

Discrimination and Back-up Protection Discrimination limits Series connection circuit-breakers — circuit-breakers AC 400 V, 50 Hz1) Downstream circuit-breakers

Upstream circuit-breakers 3WN1 In (A) I > (A)2) Icn (kA)

1250 15000 50/80

1600 2000 19200 24000 50/80 65/80 Discrimination limits (kA)3) 50/80 65/80 50/80 65/80 50/80 65/80 50/80 65/80 50/80 65/80 50/80 65/80 50/80 65/80 50/80 65/80 50/80 65/80 50 50 50 50 50 50

2500 30000 65/80

3200 37800 100

4000 48000 100

65/80 65/80 65/80 65/80 65/80 65/80 65/80 65/80 65/80 50 50 50

100 100 100 100 100 100 100 100 100 50 50 50

100 100 100 100 100 100 100 100 100 50 50 50

3RV1.1

1 1.25 1.6 2 2.5 3.2 4 5 6.3 8 10 12

12 15 19 24 30 38 48 60 76 96 120 144

100 100 100 100 100 100 100 100 100 50 50 50

50/80 50/80 50/80 50/80 50/80 50/80 50/80 50/80 50/80 50 50 50

3RV1.2

1 1.25 1.6 2 2.5 3.2 4 5 6.3 8 10 12.5 16 20 22 25 16 20 25 32 40 45 50 16 20 25 32 40 50 63 75 90 100 50 63 80 100 125 160 16 20 25 32 40 50 63 80 100 125 160 200 225 80 100 160 205

12 15 19 24 30 38 48 60 76 96 120 150 192 240 264 300 192 240 300 384 480 540 600 192 240 300 384 480 600 756 900 1080 1140 500 630 800 1000 1250 1600 400 400 400 400 400 400 500 630 800 1000 1280 2400 2400 1200 1500 2400 2600

100 100 100 100 100 100 100 100 100 100 100 100 50 50 50 50 50 50 50 50 50 50 50 100 100 100 100 100 100 100 100 100 100 40/70/100 40/70/100 40/70/100 40/70/100 40/70/100 40/70/100 25/40/70 25/40/70 25/40/70 25/40/70/100 25/40/70/100 25/40/70/100 25/40/70/100 25/40/70/100 25/40/70/100 25/40/70/100 25/40/70/100 40/70/100 40/70/100 40/70 40/70 40/70 40/70

50/80 50/80 50/80 50/80 50/80 50/80 50/80 50/80 50/80 50/80 50/80 50/80 50 50 50 50 50 50 50 50 50 50 50 50/80 50/80 50/80 50/80 50/80 50/80 50/80 50/80 50/80 50/80 40/70/80 40/70/80 40/70/80 40/70/80 40/70/80 40/70/80 25/40/70 25/40/70 25/40/70 25/40/70/80 25/40/70/80 25/40/70/80 25/40/70/80 25/40/70/80 25/40/70/80 25/40/70/80 25/40/70/80 40/70/80 40/70/80 40/70 40/70 40/70 40/70

50/80 50/80 50/80 50/80 50/80 50/80 50/80 50/80 50/80 50/80 50/80 50/80 50 50 50 50 50 50 50 50 50 50 50 50/80 50/80 50/80 50/80 50/80 50/80 50/80 50/80 50/80 50/80 40/70/80 40/70/80 40/70/80 40/70/80 40/70/80 40/70/80 25/40/70 25/40/70 25/40/70 25/40/70/80 25/40/70/80 25/40/70/80 25/40/70/80 25/40/70/80 25/40/70/80 25/40/70/80 25/40/70/80 40/70/80 40/70/80 40/70 40/70 40/70 40/70

65/80 65/80 65/80 65/80 65/80 65/80 65/80 65/80 65/80 65/80 65/80 65/80 50 50 50 50 50 50 50 50 50 50 50 65/80 65/80 65/80 65/80 65/80 65/80 65/80 65/80 65/80 65/80 40/70/80 40/70/80 40/70/80 40/70/80 40/70/80 40/70/80 25/40/70 25/40/70 25/40/70 25/40/70/80 25/40/70/80 25/40/70/80 25/40/70/80 25/40/70/80 25/40/70/80 25/40/70/80 25/40/70/80 40/70/80 40/70/80 40/70 40/70 40/70 40/70

65/80 65/80 65/80 65/80 65/80 65/80 65/80 65/80 65/80 65/80 65/80 65/80 50 50 50 50 50 50 50 50 50 50 50 65/80 65/80 65/80 65/80 65/80 65/80 65/80 65/80 65/80 65/80 40/70/80 40/70/80 40/70/80 40/70/80 40/70/80 40/70/80 25/40/70 25/40/70 25/40/70 25/40/70/80 25/40/70/80 25/40/70/80 25/40/70/80 25/40/70/80 25/40/70/80 25/40/70/80 25/40/70/80 40/70/80 40/70/80 40/70 40/70 40/70 40/70

100 100 100 100 100 100 100 100 100 100 100 100 50 50 50 50 50 50 50 50 50 50 50 100 100 100 100 100 100 100 100 100 100 40/70/100 40/70/100 40/70/100 40/70/100 40/70/100 40/70/100 25/40/70 25/40/70 25/40/70 25/40/70/100 25/40/70/100 25/40/70/100 25/40/70/100 25/40/70/100 25/40/70/100 25/40/70/100 25/40/70/100 40/70/100 40/70/100 40/70 40/70 40/70 40/70

100 100 100 100 100 100 100 100 100 100 100 100 50 50 50 50 50 50 50 50 50 50 50 100 100 100 100 100 100 100 100 100 100 40/70/100 40/70/100 40/70/100 40/70/100 40/70/100 40/70/100 25/40/70 25/40/70 25/40/70 25/40/70/100 25/40/70/100 25/40/70/100 25/40/70/100 25/40/70/100 25/40/70/100 25/40/70/100 25/40/70/100 40/70/100 40/70/100 40/70 40/70 40/70 40/70

for starter combinations

63 100 160

1000 1500 2400

70 70 70

70 70 70

70 70 70

70 70 70

70 70 70

70 70 70

70 70 70

3VF3 Non-automatic circuit-breakers

100 160

1500 2400

70 70

70 70

70 70

70 70

70 70

70 70

70 70

3RV1.3

3RV1.4

3VF3 for line protection adjustable

3VF3 for line protection fixed setting

3VF3 for motor protection

3VF3

1) In 240/415 V, 50 Hz networks the discrimination limits must be reduced by 10%. 2) The discrimination values for the upstream circuit-breakers apply for adjustable releases at maximum setting. 3) The corresponding value is dependant upon the breaking capacities of the upstream and downstream breakers (See page 12/4).

12/18

Siemens NS PS · 2001

nsk12_06.fm Seite 19 Freitag, 16. Februar 2001 9:45 09

Discrimination and Back-up Protection Discrimination limits

3WN6 5000 60000 100

630 6300 100

315 4750 65

400 6000 65

500 7500 65

630 9450 65

800 12000 65

1000 15000 65

1250 18750 65

1600 24000 65

2000 24000 80

2500 37500 80

3200 48000 80

100 100 100 100 100 100 100 100 100 50 50 50

100 100 100 100 100 100 100 100 100 50 50 50

65 65 65 65 65 65 65 65 65 50 50 30

65 65 65 65 65 65 65 65 65 50 50 50

65 65 65 65 65 65 65 65 65 50 50 50

65 65 65 65 65 65 65 65 65 50 50 50

65 65 65 65 65 65 65 65 65 50 50 50

65 65 65 65 65 65 65 65 65 50 50 50

65 65 65 65 65 65 65 65 65 50 50 50

65 65 65 65 65 65 65 65 65 50 50 50

80 80 80 80 80 80 80 80 80 50 50 50

80 80 80 80 80 80 80 80 80 50 50 50

80 80 80 80 80 80 80 80 80 50 50 50

100 100 100 100 100 100 100 100 100 100 100 100 50 50 50 50 50 50 50 50 50 50 50 100 100 100 100 100 100 100 100 100 100 40/70/100 40/70/100 40/70/100 40/70/100 40/70/100 40/70/100 25/40/70 25/40/70 25/40/70 25/40/70/100 25/40/70/100 25/40/70/100 25/40/70/100 25/40/70/100 25/40/70/100 25/40/70/100 25/40/70/100 40/70/100 40/70/100 40/70 40/70 40/70 40/70

100 100 100 100 100 100 100 100 100 100 100 100 50 50 50 50 50 50 50 50 50 50 50 100 100 100 100 100 100 100 100 100 100 40/70/100 40/70/100 40/70/100 40/70/100 40/70/100 40/70/100 25/40/70 25/40/70 25/40/70 25/40/70/100 25/40/70/100 25/40/70/100 25/40/70/100 25/40/70/100 25/40/70/100 25/40/70/100 25/40/70/100 40/70/100 40/70/100 40/70 40/70 40/70 40/70

65 65 65 65 65 65 65 65 65 65 65 30 25 25 20 20 20 15 12 8 8 8 8 25 15 10 10 6 6 6 6 6 6 4.5 4.5 4.5 4.5 4.5 4.5 4.5 4.5 4.5 4.5 4.5 4.5 4.5 4.5 4.5 4.5 4.5 5 5 5 5 5 5

65 65 65 65 65 65 65 65 65 65 65 65 50 50 40 40 30 25 20 15 12 12 12 30 25 15 12 10 10 10 8 8 8 6.3 6.3 6.3 6.3 6.3 6.3 6.8 6.8 6.8 6.8 6.8 6.8 6.8 6.8 6.8 6.8 6.8 6.6 6.6 6.9 6.9 6.9 6.9

65 65 65 65 65 65 65 65 65 65 65 65 50 50 50 50 40 40 30 25 20 20 25 65 65 25 20 15 15 12 12 12 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10

65 65 65 65 65 65 65 65 65 65 65 65 50 50 50 50 50 50 50 40 40 40 40 65 65 65 30 25 25 20 20 15 15 14 14 14 14 14 14 14 14 14 14 14 14 14 14 14 14 14 15 15 15 15 15 15

65 65 65 65 65 65 65 65 65 65 65 65 50 50 50 50 50 50 50 50 50 50 50 65 65 65 65 40 30 30 30 30 30 27 25 25 24 24 20 27 27 27 25/27/27/27 25/27/27/27 25/27/27/27 25 25 22 22 22 20 20 20 20 20 20

65 65 65 65 65 65 65 65 65 65 65 65 50 50 50 50 50 50 50 50 50 50 50 65 65 65 65 65 65 65 65 65 65 40/50/50 40 40 40 40 33 25/40/50 25/40/50 25/40/50 25/40/50/50 25/40/50/50 25/40/50/50 25/40/40/40 25/40/40/40 25/33/33/33 25/33/33/33 25/33/33/33 25/33/33/35 25/35/35/35 35 35 35 35

65 65 65 65 65 65 65 65 65 65 65 65 50 50 50 50 50 50 50 50 50 50 50 65 65 65 65 65 65 65 65 65 65 40/65/65 40/65/65 40/65/65 40/65/65 40/65/65 35/65/60 25/40/65 25/40/65 25/40/65 25/40/65/65 25/40/65/65 25/40/65/65 25/40/65/65 25/40/65/65 25/40/65/65 25/40/65/65 25/40/65/65 40/65/65 40/65/65 40/65 40/65 40/65 40/65

65 65 65 65 65 65 65 65 65 65 65 65 50 50 50 50 50 50 50 50 50 50 50 65 65 65 65 65 65 65 65 65 65 40/65/65 40/65/65 40/65/65 40/65/65 40/65/65 40/65/65 25/40/65 25/40/65 25/40/65 25/40/65/65 25/40/65/65 25/40/65/65 25/40/65/65 25/40/65/65 25/40/65/65 25/40/65/65 25/40/65/65 40/65/65 40/65/65 40/65 40/65 40/65 40/65

80 80 80 80 80 80 80 80 80 80 80 80 50 50 50 50 50 50 50 50 50 50 50 80 80 80 80 80 80 80 80 80 80 40/70/80 40/70/80 40/70/80 40/70/80 40/70/80 40/70/80 25/40/70 25/40/70 25/40/70 25/40/70/80 25/40/70/80 25/40/70/80 25/40/70/80 25/40/70/80 25/40/70/80 25/40/70/80 25/40/70/80 40/70/80 40/70/80 40/70 40/70 40/70 40/70

80 80 80 80 80 80 80 80 80 80 80 80 50 50 50 50 50 50 50 50 50 50 50 80 80 80 80 80 80 80 80 80 80 40/70/80 40/70/80 40/70/80 40/70/80 40/70/80 40/70/80 25/40/70 25/40/70 25/40/70 25/40/70/80 25/40/70/80 25/40/70/80 25/40/70/80 25/40/70/80 25/40/70/80 25/40/70/80 25/40/70/80 40/70/80 40/70/80 40/70 40/70 40/70 40/70

80 80 80 80 80 80 80 80 80 80 80 80 50 50 50 50 50 50 50 50 50 50 50 80 80 80 80 80 80 80 80 80 80 40/70/80 40/70/80 40/70/80 40/70/80 40/70/80 40/70/80 25/40/70 25/40/70 25/40/70 25/40/70/80 25/40/70/80 25/40/70/80 25/40/70/80 25/40/70/80 25/40/70/80 25/40/70/80 25/40/70/80 40/70/80 40/70/80 40/70 40/70 40/70 40/70

70 70 70

70 70 70

5.4 5 5

7.2 6.8 6.6

10 10 10

15 15 15

20 20 20

35 35 35

65 65 65

65 65 65

70 70 70

70 70 70

70 70 70

70 70

70 70

5.4 5

6.8 6.6

10 10

15 15

20 20

35 35

65 65

65 65

70 70

70 70

70 70

In = Rated current I> = Response current for instantaneous short-circuit releases Icn = Rated short-circuit breaking capacity

Siemens NS PS · 2001

12

3VL data in preparation and are available on request.

12/19

nsk12_06.fm Seite 20 Freitag, 16. Februar 2001 9:45 09

Discrimination and Back-up Protection Discrimination limits Series connection circuit-breakers — circuit-breakers AC 400 V, 50 Hz1) Downstream circuit-breakers

Upstream circuit-breakers 3VF5 In (A) I > (A)2) Icn (kA)

200 2000 45/70/100

250 315 2500 3150 45/70/100 45/70/100 Discrimination limits (kA) 2 2.5 2 2.5 2.5 2.5

400 4000 45/70/100

315 3200 45/70/100

400 4000 45/70/100

3.4 3.4 3.4 3.4

3.4 3.4 3.4 3.4

4 4 4 4

4 4

5 5 5

3VF4 for motor protection

125 160 200 250

1250 1600 2000 2500

40/70/100 40/70/100 40/70/100 40/70/100

3VF4 for starter combinations

125 160 200

2000 2500 3000

70 70 70

3 3 3

3VF4 Non-automatic circuit-breakers

250

3000

40/70

3

3VF5 for line protection

200 250 315 400

2000 2500 3150 4000

45/70/100 45/70/100 45/70/100 45/70/100

3VF5 for motor protection

315

4800

40/65

3VF5 for starter combinations

200 250 315

3000 3800 4800

65 65 65

315

4800

40/65

315 400 500 630 800

3200 4000 5000 6300 6400

45/70/100 45/70/100 45/70/100 45/70/100 50

3VF6 for motor protection

500

7500

40/65

3VF6 for starter combinations

315 400 500

4800 6000 7500

65 65 65

3VF6 Non-automatic circuit breakers

500

7500

40/65

3VF7 for line protection

800 1250

15000 15000

50/70/100 50/70/100

3VF7 Non-automatic circuit-breakers

800 1250

15000 15000

50/70 50/70

3VF8 for line protection

1600 2000

20000 20000

70/100 70/100

3VF8 Non-automatic circuit-breakers

1600 2000

20000 20000

65 65

3VF5 Non-automatic circuit-breakers 3VF6 for line protection

2 2

3VF6

2.4 2.4

3.4 3.4 3.4

3.4

5

3.4 3.4

4 4 4

5

In = Rated current I> = Response current for instantaneous short-circuit releases Icn = Rated short-circuit breaking capacity

3VL data in preparation and are available on request.

1) In 240/415 V, 50 Hz networks the discrimination limits must be reduced by 10%. 2) The discrimination values for the upstream circuit-breakers apply for adjustable releases at maximum setting.

12/20

Siemens NS PS · 2001

nsk12_06.fm Seite 21 Freitag, 16. Februar 2001 9:45 09

Discrimination and Back-up Protection Discrimination limits

3VF7

3WN1

500 5000 45/70/100

630 6300 45/70/100

800 6400 50

800-1250 15000 50/70/100

1600-2500 20000 70/100

315 3780 65

400 4800 65

500 6000 65

630 7560 65

800 9600 65

1000 12000 65

4 4 4 4

5.1 4.9 4.9 4.9

5.1 4.9 4.9 4.9

33 33 33 33

40/65/65 40/65/65 40/65/65 40/65/65

5.4 5.3 5.3 5.3

7.5 7.5 7.5 7.5

10 10 10 10

14 13 13 13

22 22 22 22

33 33 33 33

5 5 5

6 6 6

6 6 6

27 27 27

58 58 58

6.3 6.3 6.3

8.3 8.3 8

10 10 10

13 13 13

19 19 19

28 28 28

5

6

6

27

35/58

6.2

8

10

13

19

28

4 4 4

4 4 4 4

4 4 4 4

30 28 28 28

45/60/60 45/60/60 45/60/60 45/60/60

5.2 5.2

7.7 7.3 7.3

10 9.8 9.8 9.8

13 13 13 13

20 19 19 19

30 28 28 28

5

5

27

40/46

10

13

18

28

5 5 5

5 5 5

27 27 27

46 46 46

10 10 10

13 12 12

18 18 18

28 28 28

5

5

27

40/46

10

12

18

28

4.4 4.4

4.4 4.4

21 21 21 21

35 35 35 35 35

9.1 9.1

12 12 12

16 16 16 16

22 22 22 22 22

17

30

13

17

17 17 17

30 30 30

13 13 13

17 17 17

5 5

6

7.7 7.4

6.8

9

11

12

Siemens NS PS · 2001

12/21

nsk12_06.fm Seite 22 Freitag, 16. Februar 2001 9:45 09

Discrimination and Back-up Protection Discrimination limits Series connection circuit-breakers — circuit-breakers AC 400 V, 50 Hz1) Downstream circuit-breakers

Upstream circuit-breakers 3WN1

In (A) I > (A)2) Icn (kA)

1250 15000 80

1600 2000 2500 19200 2400 30000 80 80 80 Discrimination limits (kA) 40/70/80 40/70/80 40/70/80 40/70/80 40/70/80 40/70/80 40/70/80 40/70/80 40/70/80 40/70/80 40/70/80 40/70/80

3200 37800 100

4000 48000 100

5000 60000 100

6300 75600 100

40/70/100 40/70/100 40/70/100 40/70/100

40/70/100 40/70/100 40/70/100 40/70/100

40/70/100 40/70/100 40/70/100 40/70/100

40/70/100 40/70/100 40/70/100 40/70/100

3VF4 for line protection

125 160 200 250

1250 1600 2000 2500

40/70/100 40/70/100 40/70/100 40/70/100

62 62 62 26

3VF4 for starter combinations

125 160 200

2000 2500 3000

70 70 70

48 48 48

70 70 70

70 70 70

70 70 70

70 70 70

70 70 70

70 70 70

70 70 70

3VF4 Non-automatic circuit-breakers

250

3000

40/70

35/48

40/70

40/70

40/70

40/70

40/70

40/70

40/70

3VF5 for line protection

200 250 315 400

2000 2500 3150 4000

45/70/100 45/70/100 45/70/100 45/70/100

40/50 40/50 40/50 40/50

45/70/80 45/70/80 45/70/80 45/70/80

45/70/80 45/70/80 45/70/80 45/70/80

45/70/80 45/70/100 45/70/100 45/70/100

45/70/100 45/70/80 45/70/80 45/70/80

45/70/100 45/70/100 45/70/100 45/70/100

45/70/100 45/70/100 45/70/100 45/70/100

45/70/100 45/70/100 45/70/100 45/70/100

3VF5 for motor protection

315

4800

40/65

40

40/65

40/65

40/65

40/65

40/65

40/65

40/65

3VF5 for starter combinations

200 250 315

3000 3800 4800

65 65 65

40 40 40

65 65 65

65 65 65

65 65 65

65 65 65

65 65 65

65 65 65

65 65 65

3VF5 Non-automatic circuit-breakers

315

4800

40/65

40

40/65

40/65

40/65

40/65

40/65

40/65

40/65

315 400 500 630 800

3200 4000 5000 6300 6400

45/70/100 45/70/100 45/70/100 45/70/100 50

32 32 32 32 32

45/55/55 45/55/55 45/55/55 45/55/55 50

45/70/80 45/70/80 45/70/80 45/70/80 50

45/70/80 45/70/80 45/70/80 45/70/80 50

45/70/100 45/70/100 45/70/100 45/70/100 50

45/70/100 45/70/100 45/70/100 45/70/100 50

45/70/100 45/70/100 45/70/100 45/70/100 50

45/70/100 45/70/100 45/70/100 45/70/100 50

3VF6 for motor protection

500

7500

40/65

28

40

40/60

40/65

40/65

40/65

40/65

40/65

3VF6 for starter combinations

315 400 500

4800 6000 7500

65 65 65

28 28 28

40 40 40

60 60 60

65 65 65

65 65 65

65 65 65

65 65 65

65 65 65

3VF6 Non-automatic circuit-breakers

500

7500

40/65

3VF7 for line protection

800 1250

15000 15000

50/70/100 50/70/100

3VF7 Non-automatic circuit-breakers

800 1250

15000 15000

50/70 50/70

3VF8 for line protection

1600 2000

20000 20000

70/100 70/100

3VF8 Non-automatic circuit-breakers

1600 2000

20000 20000

65 65

3VF6 for line protection

In = Rated current I> = Response current for instantaneous short-circuit releases Icn = Rated short-circuit breaking capacity

3VL data in preparation and are available on request.

1) In 240/415 V, 50 Hz networks the discrimination limits must be reduced by 10%. 2) The discrimination values for the upstream circuit-breakers apply for adjustable releases at maximum setting.

12/22

Siemens NS PS · 2001

nsk12_06.fm Seite 23 Freitag, 16. Februar 2001 9:45 09

Discrimination and Back-up Protection Discrimination limits

3WN6 315 4725 65

400 6000 65

500 7500 65

630 9450 65

800 12000 65

1000 15000 65

1250 18750 65

1600 24000 65

2000 24000 80

2500 37500 80

3200 48000 80

4.3 4 4 4

5.3 5.2 5.2 5.2

7.2 7.2 7.2 7.2

10 10 10 10

14 13 13 13

20 19 19 19

30 30 30 30

40/60/60 40/60/60 40/60/60 40/60/60

40/70/80 40/70/80 40/70/80 40/70/80

40/70/80 40/70/80 40/70/80 40/70/80

40/70/80 40/70/80 40/70/80 40/70/80

4.9 4.9 4.9

6 6 6

7.7 7.7 7.7

10 10 10

13 13 13

18 18 18

25 25 25

45 45 45

70 70 70

70 70 70

70 70 70

4.8

6

7.7

10

13

18

25

40/45

40/70

40/70

40/70

4 4

5 5 5

7.3 7 7 7

10 9 9 9

13 12 12 12

20 18 18 18

29 27 27 27

45/55/55 45/50/50 45/50/50 45/50/50

40/70/80 40/70/80 40/70/80 40/70/80

40/70/80 40/70/80 40/70/80 40/70/80

40/70/80 40/70/80 40/70/80 40/70/80

10

13

18

26

40

40/65

40/65

40/65

4.7 4.7

6 5.9 5.9

7.4 7.2 7.2

10 10 10

13 11 11

18 17 17

26 26 26

40 40 40

65 65 65

65 65 65

65 65 65

5.9

7.2

10

11

17

26

40

40/65

40/65

40/65

4.5

6.5 6.5

9 9 9

11 11 11

15 15 15 15 15

20 20 20 20 20

32 32 32 32 32

40/50/50 40/50/50 40/50/50 40/50/50 50

40/70/80 40/70/80 40/70/80 40/70/80 50

40/70/80 40/70/80 40/70/80 40/70/80 50

9

10

12

17

28

34

40/55

40/65

9 9 9

10 10 10

12 12 12

17 17 17

28 28 28

34 34 34

55 55 55

65 65 65

9

10

12

17

28

34

40/55

40/65

16 16

22 22

28 28

45 45

16 16

22 22

28 28

45 45

33 33 33 33

Siemens NS PS · 2001

12/23

12

nsk12_24.fm Seite 24 Freitag, 16. Februar 2001 9:46 09

Discrimination and Back-up Protection Discrimination limits Series connection miniature circuit-breakers – miniature circuit-breakers AC 230 V, 50 Hz In distribution networks without any fuses, mccb’s provide selectivity between themselves within close limits. . Downstream miniature circuit-breakers

Upstream miniature circuit-breakers

In (A) I > (A) Icn (kA)

5SX4...-7 20 200 10

25 32 40 250 320 400 10 10 10 Discrimination limits (kA) 0.2 0.3 0.5

50 500 10

5SX7...-7 63 630 10

80 800 10

100 1000 10

5SX7...-8 63 945 10

80 1200 10

100 1500 10

5SX2

6

30

6/10

0.2

0.5

0.5

0.8

1.5

1.5

3

5

5SX4 B-Charakteristics

10 13

50 65

6/10 6/10

0.2 0.2

0.2 0.2

0.3 0.3

0.5 0.4

0.5 0.5

0.5 0.5

0.8 0.8

1.2 1.2

1.5 1.5

3 2

4 3

16 20

80 100

6/10 6/10

0.2

0.2 0.2

0.3 0.3

0.4 0.4

0.5 0.5

0.5 0.5

0.8 0.8

1.2 1.2

1.5 1.5

2 2

3 3

25 32

125 160

6/10 6/10

0.4 0.4

0.4 0.4

0.4 0.4

0.6 0.6

1.2 1.2

1.5 1.2

1.5 1.5

3 3

40 50

200 250

6/10 6/10

0.4

0.4 0.4

0.6 0.6

1.2 1

1.2 1.2

1.5 1.5

2.5 2.5

5SX2

0.5

5

6/10

0.2

0.3

0.5

0.8

0.8

0.8

1.2

4

5

6/10

6/10

5SX4 C-Charakteristics

1 1.5

10 15

6/10 6/10

0.2 0.2

0.3 0.3

0.5 0.5

0.8 0.8

0.8 0.8

0.8 0.8

1.2 1.2

4 4

5 5

6/10 6/10

6/10 6/10

2 3

20 30

6/10 6/10

0.2 0.2

0.3 0.2

0.5 0.3

0.8 0.5

0.8 0.5

0.8 0.5

1.2 0.8

4 1.5

5 1.5

6/10 3

6/10 4

4 6

40 60

6/10 6/10

0.2 0.2

0.2 0.2

0.3 0.3

0.5 0.5

0.5 0.5

0.5 0.5

0.8 0.8

1.5 1.5

1.5 1.5

3 3

4 4

8 10

80 100

6/10 6/10

0.2 0.2

0.2 0.2

0.3 0.3

0.4 0.4

0.5 0.4

0.4 0.4

0.6 0.6

1.2 1.2

1.5 1.5

2.5 2.5

3 3

13 16

130 160

6/10 6/10

0.2 0.2

0.2 0.2

0.3 0.3

0.4 0.4

0.4 0.4

0.4 0.4

0.6 0.6

1.2 1.2

1.2 1.2

2 2

3 3

20 25

200 250

6/10 6/10

0.2

0.3

0.4 0.3

0.4 0.4

0.4 0.4

0.6 0.6

1.2 1

1.2 1

2 1.5

3 2.5

32 40

320 400

6/10 6/10

0.3

0.4

0.4

0.6

1 0.8

1 1

1.5 1.5

2.5 2

50 63

500 630

6/10 6/10

0.8 0.8

1

1.5 1.2

2 1.5

In = Rated current I> = Response current for instantaneous short-circuit releases Icn = Rated breaking capacity acc. to EN 60 898 for mccb´s

3VL data in preparation and are available on request.

12/24

Siemens NS PS · 2001

nsk12_24.fm Seite 25 Freitag, 16. Februar 2001 9:46 09

Discrimination and Back-up Protection Discrimination limits Series connection circuit-breakers – miniature circuit-breakers AC 380-420 V, 50 Hz Downstream miniature circuit-breakers

In (A) I > (A) Icn (kA) 5SX2 ...-5 A-Charakteristics

5SX4 1..-6 B-Charakteristics

5SX4 ...-7 C-Charakteristics

5SX2 ...-8 D-Charakteristics

5SQ2 B-Charakteristics

5SQ2 C-Charakteristics

2 10 16 32 40 6 10 13 16 20 25 32 40 50 0.5 1 1.6 2 3 4 6 8 10 13 16 20 25 32 40 50 63

6 6 6 6 6 6/10 6/10 6/10 6/10 6/10 6/10 6/10 6/10 6/10 6/10 6/10 6/10 6/10 6/10 6/10 6/10 6/10 6/10 6/10 6/10 6/10 6/10 6/10 6/10 6/10 6

2 6 10 16 32 40 50 6 10 16 20 25 32 0.5 1 1.6 2 3 4 6 8 10 16 20 25 32 40 50 63

6 6 6 6 6 6 6 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3

Upstream circuit-breakers 3VF2 for line protection 16 20 25 32 350 450 500 600 18 18 18 18 Discrimination limits (kA) 0.7 1.2 1.5 2.8 0.3 0.5 0.6 0.6 0.4 0.6 0.6

40 750 18

45 750 18

50 800 18

63 800 18

70 900 18

80 900 18

90 1000 18

100 1000 18

6 0.8 0.8 0.8

6 0.8 0.8 0.8

6 1 1 0.8 0.8 1 1 1 1 1 0.8 0.8 0.8

6 1 1 0.8 0.8 1 1 1 1 1 0.8 0.8 0.8 0.8 1.5 1.5 1.5 1.5 1 1 1 0.8 0.8 0.8 0.8 0.8 0.8 0.8 0.7 0.7

6 1.2 1.2 1 0.8 1.2 1.2 1.2 1.2 1.2 1 1 1 1 3 3 3 3 1.2 1.2 1.2 1 1 1 1 1 0.8 0.8 0.8 0.8

6 1.2 1.2 1 0.8 1.2 1.2 1.2 1.2 1.2 1 1 1 1 3 3 3 3 1.2 1.2 1.2 1 1 1 1 1 0.8 0.8 0.8 0.8

6 1.5 1.2 1.2 1 1.5 1.5 1.2 1.2 1.2 1.2 1.2 1.2 1 4.8 4.8 4.8 4.8 1.5 1.5 1.5 1.2 1.2 1.2 1.2 1.2 1 1 1 0.8 0.8

6 1.5 1.2 1.2 1 1.5 1.5 1.2 1.2 1.2 1.2 1.2 1.2 1 4.8 4.8 4.8 4.8 1.5 1.5 1.5 1.2 1.2 1.2 1.2 1.2 1 1 1 0.8 0.8

0.3 0.3 0.3

0.5 0.4 0.4 0.4

0.6 0.5 0.5 0.5 0.5

0.8 0.7 0.6 0.6 0.6 0.5

1 1 0.8 0.8 0.8 0.8 0.8

1 1 0.8 0.8 0.8 0.8 0.8

0.5 0.5 0.5 0.5 0.3 0.3 0.3 0.2 0.2 0.2

0.7 0.7 0.7 0.7 0.4 0.4 0.4 0.4 0.4 0.4 0.4

0.8 0.8 0.8 0.8 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5

1 1 1 1 0.7 0.7 0.7 0.6 0.6 0.6 0.6 0.6 0.5

1.5 1.5 1.5 1.5 1 1 1 0.8 0.8 0.8 0.8 0.8 0.7 0.7

1.5 1.5 1.5 1.5 1 1 1 0.8 0.8 0.8 0.8 0.8 0.7 0.7

1.5 1.5 1.5 1.5 1 1 1 0.8 0.8 0.8 0.8 0.8 0.8 0.8 0.7

0.5 0.3 0.3

0.6 0.4 0.4

0.6 0.5 0.4

0.8 0.6 0.6 0.5

1.2 0.8 0.8 0.6

1.2 0.8 0.8 0.6

1.5 1 0.8 0.7 0.7

1.5 1 0.8 0.7 0.7

1.5 1.2 1 0.8 0.8

1.5 1.2 1 0.8 0.8

2.3 1.5 1.2 1 0.8

2.3 1.5 1.2 1 0.8

0.3 0.2

0.4 0.3 0.3

0.5 0.4 0.3 0.3

0.7 0.5 0.4 0.4 0.4

2.9 2.9 2.9 2.9 0.3 0.3 0.3 0.2 0.2

3 3 3 3 0.4 0.4 0.4 0.4 0.3 0.3

3 3 3 3 0.5 0.5 0.5 0.4 0.4 0.3 0.3

3 3 3 3 0.7 0.7 0.7 0.5 0.5 0.4 0.4 0.4

1 0.7 0.6 0.6 0.6 0.6 3 3 3 3 1 1 1 0.7 0.7 0.6 0.6 0.6 0.6

1 0.7 0.6 0.6 0.6 0.6 3 3 3 3 1 1 1 0.7 0.7 0.6 0.6 0.6 0.6

1 0.7 0.7 0.7 0.6 0.6 3 3 3 3 1 1 1 0.7 0.7 0.7 0.7 0.6 0.6

1 0.7 0.7 0.7 0.6 0.6 3 3 3 3 1 1 1 0.7 0.7 0.7 0.7 0.6 0.6

1.2 0.8 0.8 0.8 0.7 0.7 3 3 3 3 1.2 1.2 1.2 0.8 0.8 0.8 0.8 0.7 0.7 0.7 0.7

1.2 0.8 0.8 0.8 0.7 0.7 3 3 3 3 1.2 1.2 1.2 0.8 0.8 0.8 0.8 0.7 0.7 0.7 0.7 0.7

1.5 1 0.8 0.8 0.8 0.8 3 3 3 3 1.5 1.5 1.5 1 1 0.8 0.8 0.8 0.8 0.7 0.7 0.7

1.5 1 0.8 0.8 0.8 0.8 3 3 3 3 1.5 1.5 1.5 1 1 0.8 0.8 0.8 0.7 0.7 0.7 0.7

In = Rated current I> = Response current for instantaneous short-circuit releases Icn = Rated short-circuit breaking capacity acc. to IEC 60 947-2 for circuit-breakers. Rated breaking capacity acc. to EN 60 898 for mccb’s

3VL data in preparation and are available on request.

Siemens NS PS · 2001

12/25

12

nsk12_24.fm Seite 26 Freitag, 16. Februar 2001 9:46 09

Discrimination and Back-up Protection Discrimination limits Series connection circuit-breakers – circuit-breakers AC 400 V, 50 Hz1) Downstream circuit-breakers

In (A) I> (A)2 ) Icn (kA) 3VF2 for line protection

16 20 25 32 40 45 50 63 70 80 90 100

350 450 500 600 750 750 800 800 900 900 1000 1000

18 18 18 18 18 18 18 18 18 18 18 18

Downstream circuit-breakers

In (A) I> (A)2 ) Icn (kA) 3VF2 for line protection

16 20 25 32 40 45 50 63 70 80 90 100

350 450 500 600 750 750 800 800 900 900 1000 1000

18 18 18 18 18 18 18 18 18 18 18 18

Downstream circuit-breakers

In (A) I> (A)2 ) Icn (kA) 3VF2 for line protection

16 20 25 32 40 45 50 63 70 80 90 100

350 450 500 600 750 750 800 800 900 900 1000 1000

18 18 18 18 18 18 18 18 18 18 18 18

Upstream circuit-breakers 3VF3 for line protection adjustable 50 63 80 100 500 630 800 1000 40/70/100 40/70/100 40/70/100 40/70/100 Discrimination limits (kA)3) 1 1 1 1

125 1250 40/70/100

160 1600 40/70/100

1 1 1 1

1.9 1.9 1.9 1.9 1.8 1.8 1.8 1.8 1.8 1.8 1.8 1.8

3VF3 fixed setting 200 16 20 2000 400 400 40/70/100 25/40/70 25/40/70 2.5 2.5 2.5 2.5 2.3 2.3 2.3 2.3 2.3 2.3 2.3 2.3

Upstream circuit-breakers 3VF4 for line protection fixed setting 125 160 200 250 1250 1600 2000 2500 40/70/100 40/70/100 40/70/100 40/70/100 Discrimination limits (kA)3) 1.1 2.3 2.4 1.1 2.3 2.4 1.1 2.3 2.4 1.1 2.3 2.4 2.1 2.1 2.1 2.1 2.1 2.1 2.1 2.1 2.1 2.1 2.1 2.1 2.1 2.1 2.1 2.1

Upstream circuit-breakers 3VF5 adjustable4 ) 200 250 315 400 2000 2500 3150 4000 45/70/100 45/70/100 45/70/100 45/70/100 Discrimination limits (kA)3) 2.1 2.1 2.5 3.8 2.1 2.1 2.5 3.8 2.1 2.1 2.5 3.8 2.1 2.1 2.5 3.8 1.9 1.9 2.5 3.4 1.9 1.9 2.5 3.4 1.9 1.9 2.5 3.4 1.9 1.9 2.5 3.4 1.9 1.9 2.5 3.4 1.9 1.9 2.5 3.4 1.9 1.9 2.5 3.4 1.9 1.9 2.5 3.4

3VF6 fixed setting 400 315 400 4000 3200 4000 45/70/100 45/70/100 45/70/100 4 4 4 4 4 4 4 4 4 4 4 4

5.2 5.2 5.2 5.2 4.3 4.3 4.3 4.3 4.3 4.3 4.3 4.3

7.9 7.9 7.9 7.9 5 5 5 5 5 5 5 5

In = Rated current I> = Response current for instantaneous short-circuit releases Icn = Rated short-circuit breaking capacity

3VL data in preparation and are available on request.

1) 2) 3) 4)

In 240/415 V, 50 Hz networks the discrimination limits must be reduced by 10%. The discrimination values for the upstream circuit-breakers apply for adjustable releases at maximum setting. The corresponding value is dependant on the breaking capacities of the upstream and downstream breakers (See page 12/4). For 3VF5, 3VF6 and 3VF7 the delay time td must also be set to 100 ms or higher.

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nsk12_24.fm Seite 27 Freitag, 16. Februar 2001 9:46 09

Discrimination and Back-up Protection Discrimination limits

25 400 25/40/70

3VF4 adjustable 125 1250 40/70/100

32 400 25/40/70/100

40 400 25/40/70/100

50 400 25/40/70/100

160 1600 40/70/100

200 2000 40/70/100

250 2500 40/70/100

1.1 1.1 1.1 1.1

2.3 2.3 2.3 2.3 2.1 2.1 2.1 2.1 2.1 2.1 2.1 2.1

2.4 2.4 2.4 2.4 2.1 2.1 2.1 2.1 2.1 2.1 2.1 2.1

500 5000 45/70/100

630 6300 45/70/100

800 6400 50

7.9 7.9 7.9 7.9 5 5 5 5 5 5 5 5

10 10 10 10 6 6 6 6 6 6 6 6

10 10 10 10 6 6 6 6 6 6 6 6

Siemens NS PS · 2001

3VF6 adjustable4 ) 315 3200 45/70/100 5.2 5.2 5.2 5.2 4.3 4.3 4.3 4.3 4.3 4.3 4.3 4.3

63 500 25/40/70/100

3VF5 fixed setting 200 2000 45/70/100 2.1 2.1 2.1 2.1 1.9 1.9 1.9 1.9 1.9 1.9 1.9 1.9

80 630 25/40/70/100

100 800 25/40/70/100

125 1000 25/40/70/100

250 2500 45/70/100

315 3150 45/70/100

400 4000 45/70/100

2.1 2.1 2.1 2.1 1.9 1.9 1.9 1.9 1.9 1.9 1.9 1.9

2.5 2.5 2.5 2.5 2.5 2.5 2.5 2.5 2.5 2.5 2.5 2.5

4 4 4 4 4 4 4 4 4 4 4 4

400 4000 45/70/100

500 5000 45/70/100

630 5500 45/70/100

630 6300 45/70/100

7.9 7.9 7.9 7.9 5 5 5 5 5 5 5 5

7.9 7.9 7.9 7.9 5 5 5 5 5 5 5 5

5.8 5.8 5.8 5.8 4.9 4.9 4.9 4.9 4.9 4.9 4.9 4.9

10 10 10 10 6 6 6 6 6 6 6 6

160 1280 25/40/70/100

200 2400 40/70/100

225 2400 40/70/100

1 1 1 1

2.5 2.5 2.5 2.5 2.5 2.5 2.5 2.5 2.5 2.5 2.5 2.5

2.5 2.5 2.5 2.5 2.5 2.5 2.5 2.5 2.5 2.5 2.5 2.5

3VF7 adjustable4) 800 15000 50/70/100 18 18 18 18 18 18 18 18 18 18 18 18

1250 15000 50/70/100 18 18 18 18 18 18 18 18 18 18 18 18

12

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Discrimination and Back-up Protection Discrimination limits Series connection circuit-breakers – circuit-breakers AC 400 V, 50 Hz1) Downstream circuit-breakers

In (A) I > (A)3) Icn (kA) 3VF2 for line protection

16 20 25 32 40 45 50 63 70 80 90 100

350 450 500 600 750 750 800 800 900 900 1000 1000

18 18 18 18 18 18 18 18 18 18 18 18

Downstream circuit-breakers

In (A) I > (A)3) Icn (kA) 3VF2 for line protection

16 20 25 32 40 45 50 63 70 80 90 100

350 450 500 600 750 750 800 800 900 900 1000 1000

18 18 18 18 18 18 18 18 18 18 18 18

Upstream circuit-breakers 3VF82 ) for line protection adjustable 1600 2000 2500 20000 20000 20000 70/100 70/100 70/100 Discrimination limits (kA)4 ) 18 18 18 18 18 18 18 18 18 18 18 18 18 18 18 18 18 18 18 18 18 18 18 18 18 18 18 18 18 18 18 18 18 18 18 18

Upstream circuit-breakers 3WN1 for line protection 4000 5000 6300 48000 60000 75600 100 100 100 Discrimination limits (kA)4 ) 18 18 18 18 18 18 18 18 18 18 18 18 18 18 18 18 18 18 18 18 18 18 18 18 18 18 18 18 18 18 18 18 18 18 18 18

3WN6 315 4725 65

400 6000 65

500 7500 65

630 9450 65

6.7 6.7 6.7 6.7 5.5 5.5 5.5 5.5 5.5 5.5 5.5 5.5

10.3 10.3 10.3 10.3 7.3 7.3 7.3 7.3 7.3 7.3 7.3 7.3

12.8 12.8 12.8 12.8 9.2 9.2 9.2 9.2 9.2 9.2 9.2 9.2

18 18 18 18 14.8 14.8 14.8 14.8 14.8 14.8 14.8 14.8

In = Rated current I> = Response current for instantaneous short-circuit releases Icn = Rated short-circuit breaking capacity

3VL data in preparation and are available on request.

1) 2) 3) 4)

In 240/415 V, 50 Hz networks the discrimination limits must be reduced by 10%. For 3VF8 the delay time td must also be set to 100 ms or higher. The discrimination values for the upstream circuit-breakers apply for adjustable releases at maximum setting. The corresponding value is dependant on the breaking capacities of the upstream and downstream breakers (See page 12/4).

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Siemens NS PS · 2001

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Discrimination and Back-up Protection Discrimination limits

3WN1 for line protection 315 3780 65

400 4800 65

500 6000 65

630 7560 50/80

800 9600 50/80

1000 12000 50/80

1250 15000 50/80

1600 19200 50/80

2000 24000 65/80

2500 30000 65/80

3200 37800 100

10.5 10.5 10.5 10.5 7.4 7.4 7.4 7.4 7.4 7.4 7.4 7.4

13.2 13.2 13.2 13.2 9.5 9.5 9.5 9.5 9.5 9.5 9.5 9.5

18 18 18 18 15.2 15.2 15.2 15.2 15.2 15.2 15.2 15.2

18 18 18 18 18 18 18 18 18 18 18 18

18 18 18 18 18 18 18 18 18 18 18 18

18 18 18 18 18 18 18 18 18 18 18 18

18 18 18 18 18 18 18 18 18 18 18 18

18 18 18 18 18 18 18 18 18 18 18 18

18 18 18 18 18 18 18 18 18 18 18 18

18 18 18 18 18 18 18 18 18 18 18 18

18 18 18 18 18 18 18 18 18 18 18 18

800 12000 65

1000 15000 65

1250 18750 65

1600 24000 65

2000 30000 80

2500 37500 80

3200 48000 80

18 18 18 18 18 18 18 18 18 18 18 18

18 18 18 18 18 18 18 18 18 18 18 18

18 18 18 18 18 18 18 18 18 18 18 18

18 18 18 18 18 18 18 18 18 18 18 18

18 18 18 18 18 18 18 18 18 18 18 18

18 18 18 18 18 18 18 18 18 18 18 18

18 18 18 18 18 18 18 18 18 18 18 18

12

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nsk12_24.fm Seite 30 Freitag, 16. Februar 2001 9:46 09

Discrimination and Back-up Protection Back-up protection values Series connection circuit-breakers – miniature circuit-breakers AC 400 V, 50 Hz AC 230/400 V, 50 Hz Downstream miniature circuit-breakers

Upstream circuit-breakers 3VF3 adjustable 50 63 80

In (A)

3VF3 fixed setting 50 63

100

125

160

80

100

125

160

1000

1250

1600

400

500

630

800

1000

1280

40/70 40/70 40/70 40/70 100 100 100 100 Back-up protection up to (kA) 50 50 50 50 35 35 35 35 35 35 35 35 15 15 15 15 15 15 15 15 15 15 15 15 15 15 15 15 15 15 15 15 15 15 15 15 15 15 15 15 10 10 10 10 10 10 10

40/70 100

40/70 100

40/70 100

40/70 100

40/70 100

40/70 100

40/70 100

40/70 100

50 35 35 15 15 15 15 15 15 15 10 10

50 35 35 15 15 15 15 15 15 15 10 10

50 35 35 15 15 15 15 15 15 15 10

50 35 35 15 15 15 15 15 15 15 10 10

50 35 35 15 15 15 15 15 15 15 10 10

50 35 35 15 15 15 15 15 15 15 10 10

50 35 35 15 15 15 15 15 15 15 10 10

50 35 35 15 15 15 15 15 15 15 10 10

I> (A) 500

630

800

Icn (kA)

0.5-2 3 4 6 8 13 16 20 25 32 40 50

5SX2 5SX4 A-Charakteristics B-Charakteristics C-Charakteristics D-Charakteristics

6 kA/ 10 kA

Series connection circuit-breakers – circuit-breakers AC 400 V, 50 Hz Downstream circuit-breakers

Upstream circuit-breakers 3VF3

In (A) I > (A) Icn (kA) 3VF3

3VF4

3VF5

3VF6

50 ... 160 125 ... 250 200 ... 400 315 ... 630

400 ... 1600 1250 ... 2500 2000 ... 4000 3200 ... 6300

40 70 100 40 70 100 45 70 100 45 70 100

3VF4

50 63 80 100 125 160 125 400 630 800 1000 1250 1600 1250 40/70/100 40/70/100 40/70/100 40/70/100 40/70/100 40/70/100 40/70/100 Back-up protection up to (kA) 40/70/100 40/70/100 40/70/100

160 200 250 1600 2000 2500 40/70/100 40/70/100 40/70/100 40/70/100 40/70/100 40/70/100 40/70/100 40/70/100 40/70/100 40/70/100 40/70/100 40/70/100

In = Rated current I> = Response current for instantaneous short-circuit releases Icn = Rated short-circuit breaking capacity acc. to IEC 60 947-2 for circuit-breakers Rated breaking capacity acc. to EN 60 898 for mccb’s

3VL data in preparation and are available on request.

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Siemens NS PS · 2001

nsk12_24.fm Seite 31 Freitag, 16. Februar 2001 9:46 09

Discrimination and Back-up Protection Back-up protection values

3VF4

3VF5

3VF6

3VF7

3VF8

3WN1/3WS1

125

160

200

250

200

250

315

400

315 ... 630

400 ...1250

1600 ... 2000

315 ... 6300

1250

1600

2000

2500

2000

2500

3150

4000

3200 ...6300

15000

20000

3780 ... 75600

40/70/100

40/70/100

40/70/100

40/70/100

45/70/100

45/70/100

45/70/100

45/70/100

45/70/100

50/70/100

70/100

65 ... 100

50 35 35 15 15 15 15 15 15 15 8/10 8/10

50 35 35 15 15 15 15 15 15 15 8/10 8/10

50 35 35 15 15 15 15 15 15 15 8/10 8/10

50 35 35 15 15 15 15 15 15 15 8/10 8/10

50 35 35 15 15 15 15 15 15 15 8/10 8/10

50 35 35 15 15 15 15 15 15 15 8/10 8/10

50 35 35 15 15 15 15 15 15 15 8/10 8/10

50 35 35 15 15 15 15 15 15 15 8/10 8/10

50 35 35 15 15 15 15 15 15 15 8/10 8/10

50 35 35 15 15 15 15 15 15 15 8/10 8/10

50 35 35 15 15 15 15 15 15 15 8/10 8/10

50 35 35 15 15 15 15 15 15 15 8/10 8/10

3VF5

3VF6

3VF7

3VF8

200 2000 45/70/100

250 2500 40/70/100

315 3150 45/70/100

400 4000 45/70/100

315 3200 45/70/100

400-630 4000-6300 45/70/100

400-1250 15000 50/70/100

1600-2000 20000 70/100

40/70/100 40/70/100 40/70/100 40/70/100 40/70/100 40/70/100

40/70/100 40/70/100 40/70/100 40/70/100 40/70/100 40/70/100

40/70/100 40/70/100 40/70/100 40/70/100 40/70/100 40/70/100

40/70/100 40/70/100 40/70/100 40/70/100 40/70/100 40/70/100

45/70/100 45/70/100 45/70/100 45/70/100 45/70/100 45/70/100 45/70/100 45/70/100 45/70/100

45/65/100 45/65/100 45/65/100 45/65/100 45/65/100 45/65/100 45/70/100 45/70/100 45/70/100

50/70/65 50/70/65 50/70/100 50/65/65 50/65/70 50/65/70 50/65/65 50/70/70 50/70/70 65 70 70

65/65 70/70 70/100 65/65 70/70 70/100 65/65 70/70 70/100 65/65 70/70 70/100

12

Siemens NS PS · 2001

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