123769602-em-overcurrent-relay.pdf

ELECTRO- MECHANICAL OVER CURRENT RELAY (IDMT) TEST KIT

Model: PS-EM101-1 Make of the relay : English Electric (ALSTOM) / EASUN REYROLLE

RELAY SPECIFICATION:  C.T.SEC: 1A OR 5A*

Over current relay : PS-EM101-1

 NON- DIRECTIONAL*  PLUG SETTING: 50% - 200%*  TIME MULTIPLIER SETTING: 0.1 – 1 ,  OUTPUT : 8A relay 1NO. *  Characteristics : 3sec-10times*  Auxiliary supply : Self powered / powered *  Construction : Draw out

SOURCE UNIT: PS-SCI-SW50 Accuracy o

The relay conforms to error class index E 7.5 as per BS 142-1966 and 7.5 as per IS 3231-1965, at ten times reference current setting.

o The relays comply fully with the requirements of IS 3231-1965 and are suitable for use in normal tropical environments.

Note: Only Internationally (or) Electricity Boards’ Approved Relay are used. Advantage / Safety of relay  The above relay is fitted in a nice 19” enclosure with handle. All the terminals of relay are brought out through BTI-15 connectors for safety of the relay and relay connection. Schematic block diagram of the relay is screen printed on the front panel for easy understanding.  The Enclosures are stackable.

* other ranges are also available * DMT / High set also available * Available in the 3Phase also.

THE SOURCE UNIT: Model : PS-SCI-SW50 Input voltage

: 220v ac , 50hz, 500va

Output current

: output current continuous variable with range selection.

No of ranges 6

: 1A, 2A, 5A, 10A, 20A & 50A - selectable

Current injection

: output current short switch provided for setting the ~ output current / injection.

Burden

: 3VA

Current output

: pure sine wave technique

duty

: Intermittent

Ammeter

: MECO – 2A 3 ½ DIGIT DIGITAL

Minumum / maximum current range readable at 1A scale resolution 1A – ( 0.001 TO 1.000A), 2A – (0.002 ATO 1.000), 5A ( 0.005A –05.00A), 10A (0.01A TO 10.00A), 20A ( 0.02A – 20.00A), 50A (0.05A TO 50.00A) Time interval meter

: Selectron 0.0001 sec accuracy. (auto range / manual range programmable)

Inbuilt ct class

: 0.2/ 0.5

Special features:  Enclosures are made from CR sheet with duly galvanized and powder coated (texture finish).  Necessary diagrams screen printed (gloss ink and oven treated )  Necessary BTI connectors / BS-10 / BS2 Elcom make fitted.  Built in fuse protection and built in over current protection.  Illuminated power on / off rocker switch provided.(Elcom)  Start / stop / reset switch- (Elcom)  Trip status indicator  24V SMPS source unit for Auxiliary*.  230v AC source for Auxiliary  DUC relay output ‘NO’ or NC’ connection facility.  Necessary patch cords and power cables provided. (Elcom)  LED are fitted at schematic itself for easy understand the operation.

  

Control relays and bases O/E/N or OMRON Contactors : Schneider Electric / ABB / Siemens. Time interval internal / external selectable. Potential free ‘NO’ and ‘NC’ point to be provided for project works.

Range of experiments:         

Study of over current relay operation. Time characteristic. Time characteristic at different TMS To study of operating time. To Study of pick up current level. To Study drop off (reset level) current. Flag or target Study of draw out construction. Study of % error.

Ref: B/PS/0409 , RK: 001 *

Subject to change without notice

Manufactured By: PROTECTION SYSTEMS (INDIA), M 408, 7th Cross, 3rd Main,1st Stage, Peenya Industrial Estate, BANGALORE – 560 058 – KARNATAKA - INDIA Phone: 091-80- 28392339, 65734515,6,7 & 8 ,TeleFax : 28395651 MOBILE:09341892339 Email : [email protected], [email protected]