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Earth leakage and protective relay

500.0~900.0 USD
Min. Order: 1 Piece/Pieces
Trade Term: FOB
Payment Terms: L/C, T/T, WU
Supply Ability: 100sets/month
Place of Origin: Hebei

Company Profile

Location: Baoding, Hebei, China (Mainland)
Business Type: Manufacturer
Main Products: Resistor, Power Meter, Transformer, Arc Suppression Coil , Switchgear

Product Detail

Model No.: MRD-RLJ
Means of Transport: Ocean, Air, Land
Brand Name: MINGRUI
Production Capacity: 100sets/month
Packing: wooden case or under client's request
Delivery Date: 15-20days against deposit or L/C
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Product Description

FUNCTION

Leakage relay is applicable   to AC voltage up to 660V, frequency of 50Hz power distribution system. It is   widely used to prevent equipment failure and electrical fire, and protect   human from electric shock.

SPECIFICATIONS

There   are six parameters needed to specify the leakage relay
  1. Rated voltage (V)

2. Dia. of CT through hole- Ф (mm) and relative max. rated current value (A)

3. Rated residual operating current and non-operating   current (mA)

4. Response time (S)

5. Rated control   capacity:220V/5A

6. Installation method:   normal type—fixed mounting(H type); rail-type or fixed type( Z type); panel   type mounting(M type)

RANGE

1. Rated voltage:   380V/660V

2. Dia of CT through   hole- Ф (mm) and relative max.   rated current value(A): 25/100, 45/200,75/400,100/630

3. Rated residual   operating current and non-operating current is adjustable and customized

4. Quick type response   time: ≤0.1s; Time delay type response time: 0.2-2S

TESTING AND QUALITY

All Mingrui leakage   relays are designed, rated, manufactured and tested in strict compliance with   IEC60755-1983. Routine tests performed on each leakage relay are reclosing   function test, leakage alarm function test and power frequency   voltage-withstand test. Mingrui's internal quality system has been developed   and certified under ISO 9001 quality system

CONSTRUCTION

The whole set leakage   relay includes zero-sequence current transformer, electronic circuit, test   circuit and tripping relay. For shipping all units are crated for added   protection.

OPTIONS

• Customized bigger current ampere or through hole is   acceptable.
 
 


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