Mm30-743-catalogue.pdf

MOTOR PROTECTION RELAY

MM30-743 N81

-R1

M

LINE

37,46,47,48,49,50/51,51LR,64,66,68,74 m Thermal Image with prealarm level. m Current Unbalance. m Reduced Voltage Starting Control. m Control of n° of startings. m No-Load Running. m Blocking Output. m Autosetting. m Remote Trip Control. m Speed Control input. m Trip circuit supervision (Optional). m RTD input. m Modbus Communication Protocol. m UL / CSA listed.

O>

m Earth Fault. m Locked Rotor. m Overcurrent.

ROTOR STALL

St No

I<

I>>

Is> START INHIBIT

IA 500A M-LINE

MODE

MULTIFUNCTION MOTOR PROTECTION RELAY TYPE MM30-743

SELECT

+

_ PROG.

ENTER/RESET

Complete motor protection relay designed for the protection and active security of medium and large size induction motors. The relay also computes the positive (Id) and negative (Is) sequence components of phase-current system. The earth current input circuit includes a 3rd harmonic active filter.

¤ Real Time Measurements ¤ Maximum Demand and Inrush Recording

= T/Tn- IA - IB - IC - Io - I1 - I2 = T/Tn - IA - IB - IC - Io - I1 - I2 - tstart

Programmable Input Quantities ¤ Fn = System frequency

: (50 - 60)Hz

¤ In = Rated primary current of phase Cts

: (1 - 9999)A, step 1A

¤ On = Rated primary current of earth fault detection Cts

: (1 - 9999)A, step 1A

Connection Diagram

C

RINA

US LISTED 19CN IND.CONT.EQ.

MS-SCE1811-R1 Standard Output

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MS-SCE1798-R1 Standard Output with F74

MM30-743

M

N81-R1

F49 - Thermal Image The current I producing motor warming-up is computed as a conventional composition of positive and negative sequence components of the motor current. ¤ Measured current :I = ¤ Im ¤ Ist ¤ tst ¤ tm ¤ to ¤ Ta/n ¤ Ts/n ¤ Ib

I12 + 3I2 2

= Motor full load current = Motor start-up (Locked Rotor) current = Motor starting time = Motor warming-up time constant = Steady motor cooling-down time constant = Thermal prealarm = Restart thermal level = Rated maximum continuous current of the motor

: (0.1 - 1.5)In, : (0.5 - 10)Im, : (1 - 120)s, : (1 - 60)m, : (1 - 10)tm, : (50 - 110)%Tn, : (40 - 100)%Tn, : (1 - 1.3)Im,

step 0.01In step 0.1Im step 1s (I/Im ) 2 − (Ip /Im ) 2 t = [tm ] l n step 1m (I/Im ) 2 − (Ib /Im ) 2 step 1tm step 1% step 1% step 0.05Im

¤ Trip Current level ¤ Inhibition time at motor starting ¤ Trip time delay

: ILR = (1 - 5)Im, : 2tst : tLr = (1 - 25)s,

step 0.1Im

F46 - Current Unbalance ¤ Negative sequence current ¤ Inverse time current curve

: Is> = (0.1 - 0.8)Im, : tIs> = (1 - 8)s,

step 0.1Im step 1s (tIs> = trip time @ Is = In)

F51LR - Locked Rotor

F37 - No-Load Running ¤ Under current level ¤ Trip time delay

step 1s

: I< = (0.15-1)Im, step 0.01Im : tI< = (0.1-90)s step 0.1s When current is below 0.1 Im the function is disabled

F64 - Earth Fault ¤ Current setting range ¤ Istantaneous output ¤ Independent time delay

: O> = (0.02 - 2)On, step 0,01On : ≤ 0.03s (Reset time of instantaneous output : tO> + tBO) : tO> = (0.05 - 5)s, step 0.01s

F50/51 - Overcurrent ¤ Current setting range ¤ Istantaneous output ¤ Independent time delay ¤ Reset time delay of the blocking output relay

: I> = (1 - 5)Ist, step 0.1Ist (limited to 20 In) : ≤ 0.03s (Reset time of instantaneous output : tI> + tBO) : tI> = (0.05 - 1)s, step 0.01s : tBO = (0.05 - 0,5)s, step 0,01s

F66 (StNo) - Limitation of N° of Startings : StNo = (1 - 60), step 1 ¤ Numbers of startings : tStNo = (1 - 60)min, step 1min ¤ Time interval for counting of StNo If during the set interval the StNo is attained, a new start is inhibited for the time tBst. : tBst = (1 - 60)min, step 1min. ¤ Reset time after trip Starting Sequence Control During start-up of the motor, the unit can control an output contact used to operate the switch-over of Reduced Voltage motor starter (star-delta, resistance or impedance, autotransformers, etc.) to automatically manage the starting transition: ¤ Switch-over (transition) current ¤ Maximum switch-over time delay

: Itr = (0.1-1)Ist, : tTr = (0.5-50)s,

step 0.1Ist. step 0.1s.

At motor's start, counting of tTr begins. If during tTr the motor current drops below ITr, switching-over is operated; if motor current stays over ITr longer than tTr, the Locked Rotor element is activated. Autosetting The complexity of properly set a motor protection, frequently produces undesired tripping or non-operation of some of the data functions. The relay MM30 automatically selects the best setting of the according to motor and system basic data. These parameters are: System frequency, Rated primary current of phase CTs., Rated primary current of earth fault CT, Motor rated current, Motor starting current, Starting time,Transition current level, Transition time. Once these settings have been programmed the AUTOSET function can be activated and all the variables are computed and automatically set at values suitable for a normal duty of the motor. Variables can be anyhow manually modified if different setting is needed. 2/4

MM30-743

M

OVERALL DIMENSIONS (mm)

135

164

PROTECTION DEGREE IP44 (IP54 on request)

134 195 213

PANEL CUT-OUT 115x137 (LxH)

232

Overall Dimensions - Multi-Modules (mm)

135

164

51

32 + (n x 51)

2

195 213

9

4 + (n x 51)

225

PROTECTION DEGREE IP44 (IP54 on request) PANEL CUT-OUT (11+(n x 51)) x 137 (LxH)

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N81-R1

MM30-743 APPROVAL : CE REFERENCE STANDARDS

M

N81-R1

IEC 60255 - CE Directive - EN/IEC61000 - IEEE C37 - BSI

¤ Dielectric test voltage ¤ Impulse test voltage ¤ Insulation resistance

IEC 60255-5 IEC 60255-5 >100 M

2kV, 50/60Hz, 1 min. 5kV (c.m.), 2 kV (d.m.) - 1,2/50µs

Environmental Std. Ref. (IEC 680068) ¤ Operation ambient temperature ¤ Storage temperature ¤ Environmental testing (Cold) (Dry heat) (Change of temperature) (Damp heat, steady state)

-10°C / +55°C -25°C / +70°C IEC60068-2-1 IEC60068-2-2 IEC60068-2-14 IEC60068-2-78

IEC68-2-3 RH 93% Without Condensing 40°C

CE EMC Compatibility (EN61000-6-2 - EN61000-6-4 - EN50263) ¤ Electromagnetic radiated and conducted emission ¤ Radiated electromagnetic field immunity test ¤ ¤ ¤ ¤ ¤ ¤ ¤ ¤ ¤ ¤ ¤ ¤

Conducted disturbances immunity test Electrostatic discharge test Power frequency magnetic test Pulse magnetic field Damped oscillatory magnetic field Immunity to conducted common mode disturbance 0/150KHz Electrical fast transient/burst HF disturbance test with damped oscillatory wave (1MHz burst test) Oscillatory waves (Ring waves) Surge immunity test Voltage interruptions Resistance to vibration and shocks

EN55011 IEC61000-4-3 ENV50204 IEC61000-4-6 IEC61000-4-2 IEC61000-4-8 IEC61000-4-9 IEC61000-4-10 IEC61000-4-16 IEC61000-4-4 IEC60255-22-1

Industrial Environment level 3 80-2000MHz10V/m 900MHz/200Hz 10V/m level 3 0.15-80MHz10V level 3 6kV contact / 8kV air 1000A/m, 50/60Hz 1000A/m, 8/20ms 100A/m, 0.1-1MHz level 4 level 4 2kV, 5kHz class 3 400pps, 2.5kV (m.c.), 1kV (d.m.)

IEC61000-4-12 level 4 4kV(c.m.), 2kV(d.m.) IEC61000-4-5 level 4 2kV(c.m.), 1kV(d.m.) IEC60255-4-11 50ms IEC60255-21-1 - IEC60255-21-2

Typical Characteristics ¤ Accuracy at reference value of influencing factors ¤ Rated current ¤ Current overload ¤ Burden on current input ¤ Average power supply consumption ¤ Output relays

2% In for measurements 0.2% On 2% + (to=20-30ms) for times In = 1 or 5A - On = 1 or 5A 200A for 1 sec; 10A continuous Phase: 0.01VA at In = 1A; 0.2VA at In = 5A Neutral: 0.03 at On = 1A; 0.2VA at On = 5A <8.5 VA rating 5 A; Vn = 380 V A.C. resistive switching = 1100W (380V max) make = 30 A (peak) 0.5 sec. break = 0.3 A, 110 Vcc, L/R = 40 ms (100.000 op.)

Power Supply Type 1 : 24 ÷ 110V A.C.(±20%) Type 2 : 80 ÷ 220V A.C.(±20%)

-

24 ÷ 125V D.C. (±20%) 90 ÷ 250V D.C. (±20%)

Order code - Example : MM30-743-1-5-1-1

MM30-743 Power Supply

Current input

Output Options

Mounting

1 = Type 1 2 = Type 2

1 = 1A 5 = 5A

1 = Standard (without F74) 2 = with F74

1 = Surface 2 = Flush

via Alberelle 56/58, 20089 Rozzano, Milano (Italy) Tel. +3902575731 - Fax +390257510940 / http://www.microelettrica.com - [email protected] The performances and the characteristics reported in this catalogue are not binding and can modified at any moment without notice

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