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.