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Egr-20uscm ground fault relay
2022-07-07 05:26:00 【Comprehensive operation of Shanghai Joseph Electric Appliance C】
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
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