XJ Series Phase failure and phase sequence protective relay

summary

1. Scope of application

XJ series open phase and phase sequence protection relay is used for open phase protection and irreversible transmission equipment in three-phase AC motor control circuit. It has reliable performance, wide application range and convenient use.

According to the method shown in the wiring diagram, access to the power control circuit can not only play a protective role, any phase fuse or open circuit XJ in the three-phase circuit can act, and cut off the power supply of KM main circuit. So as to achieve the purpose of protecting the motor.

When the three-phase irreversible equipment (such as water pump, fan, air compressor, elevator motor, small and medium-sized distribution panel, etc.) is wrongly connected with the original identified phase sequence due to maintenance or change of power supply circuit after confirming the phase sequence, XJ series can also work reliably, identify the phase sequence, cut off the power supply of KM main circuit, and achieve the purpose of equipment protection.

Wide range of application, independent of motor power

Normal working conditions and installation conditions

Operating environment: altitude is not more than 2000 meters, ambient temperature is not high and 45 degrees, and it is not less than 10 degrees below zero. The range of power supply voltage change shall not be higher than 85% - 110% of rated voltage. In the medium without serious shock and explosion danger, and there is no gas and dust in the medium which is enough to corrode metal and damage insulation, where there is no rain and snow.

Vertical or horizontal installation

technical characteristics

Rated working voltage

power waste

Three phase unbalance rate

Electrical strength

No breakdown phenomenon in 1 minute of AC duration

insulation resistance