DY-4 Type negative sequence voltage relay
DY-4 Type negative sequence voltage relay

DY-4 Type negative sequence voltage relay

Rating: 100, 173 (50Hz)
Voltage setting range of negative sequence action line (V): 6~12, 10~20.8
Return coefficient: ≧ 0.8

Application Range

DY-4 type negative sequence voltage relay (hereinafter referred to as the relay) is used in the relay protection lines of generators and transformers as a voltage blocking element. It does not reflect the negative sequence component of the line voltage when the fault occurs.

Main technical parameters

Rated voltage: line voltage 100V,173V,50Hz.
Setting range: 6-12V,10.4-20.8V.
Return coefficient: not less than 0.8.
Power consumption: no more than 20VA.

The symbol of a component on a wiring diagram

Name of the element

Data

RA

The resistor

1380Ω

RC

The resistor

920Ω

XA

Capacitor

4UF  400V

XC

Capacitor

2UF  400V

J

Actuators

Each coil W=3000 coils 0.18-QQ enameled wire

 

Internal wiring

dy 4xfxdyjdq 2

Dimensions and opening dimensions

dy 4xfxdyjdq 3

A22K shell outline drawing, A22K mounting opening drawing

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