Egr-20uscm ground fault relay

EGR-20USCM Ground fault relay

brand :JOSEF Joseph

Product model : RELR-2DS-

Working voltage :AC220V/AC380V

Action time :0.1~2S

Installation mode : Guide rail in cabinet / Embedded panel

Zero sequence aperture :25mm~220mm

Host size :79.56280mm

The product name : Earth leakage relay

One 、 purpose

EGR Ground fault relay

（ Hereinafter referred to as relay ） Suitable for AC voltage of 380.660V. to 1140V The source rate in the system is 50HZ The current is 15~4000A Whether there is neutral leakage protection in the line .

Two 、 Technical indicators

3、 ... and 、 Typical reference drawing

Four 、 Relay outline dimension hole drawing

5、 ... and 、 Dimension drawing of zero sequence current transformer

EGR-20USCM Ground fault relay

（ Hereinafter referred to as relay ） Suitable for AC voltage to 1140V, The frequency is 50Hz, The relay is connected with the circuit breaker of shunt release or voltage loss release 、 AC contactor 、 Magnetic starter and other components of leakage protection device , For leakage and electric shock protection , Can be equipped with buzzer 、 Signal and other acoustooptic devices are combined to form a leakage alarm device

Working principle of leakage relay

Generally speaking , Leakage relays are electronic current operated relays , It mainly includes the following components ： The zero sequence current transformer 、 Electronic circuits 、 Test circuit and outlet relay . The working principle of leakage relay is as follows ： Zero sequence transformer will pass through the main line , When there is no leakage in the main line , The sum of vectors will be equal to 0 Or very small .

Shanghai Joseph Relay Division