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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.

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Manufactured By:PROTECTION SYSTEMS (INDIA), M 408, 7th Cross, 3rd Main,1st Stage, Peenya Industrial Estate,

BANGALORE 560 058 KARNATAKA - INDIAPhone: 091-80- 28392339, 65734515,6,7 & 8 ,TeleFax : 28395651 MOBILE:09341892339

Email : highvoltageindia@rediffmail.com, protectionsystemsindia@rediffmail.com

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 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 withduly galvanized and powder coated(texture finish).

Necessary diagrams screen printed

(gloss ink and oven treated ) Necessary BTI connectors / BS-10 / BS-

2 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 cablesprovided. (Elcom)

LED are fitted at schematic itself for easyunderstand the operation.

Control relays and bases O/E/N orOMRON Contactors : Schneider Electric /ABB / Siemens.

Time interval internal / external selectable.

Potential free NO and NC point to beprovided 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