Wanlida Feeder Protection Relay

Wanlida Feeder Protection Relay is suitable for 110kV or below circuit as an protector, controller and monitor. CE Certificate

Wanlida feeder protection relay application scope:

Wanlida feeder protection relay microcomputer line protection and monitoring device applies to the line protection and monitoring in ungrounded systems or systems grounded via resistor with voltage ratings of below 66kV. It can also be used as a current voltage protection and monitoring device in 110kV grounded systems.

Protective function

3-step compounded voltage block directional overcurrent protection(Three-step OC)Inverse time overcurrent protection (IT Overcurrent)3-phase zero sequence voltage block zero sequence overcurrent directional protection (ZS Overcurrent)Zero sequence overvoltage protection(ZS Overvoltage)Overload protection(Overload)Under frequency unloading protection(Under-frequency)Auto reclosingLater Instantaneous Trip(Later Inst.Trip)PT failureUnder voltage protection(Undervoltage)Bus charging protectionNon-electric quantity protection(2-way)(Non-electric) (Option)Synchronous Closing(Sync. Closing)

Auxiliary function

Harmonic spectrum analysis Phase displayLow current line selection Fault recorder Integral energy and pulse energy(Pulse energy option) Self-checking fault alarm of device Remote calling and modification of protection’s settings Fault recorder One or two ways programmable output of 4~20mA Provide ethernet print function(manual print setting value, manual/auto print reports)  (Option)

Monitoring function

Electric quantity(remote measuring quantity): voltage, current, active power, reactive power, active energy, reactive energy, power factor, grid frequency, non-electric quantity measuring(Option), etc. 

Remote binary quantity: the device has 15-way binary input, in which: 12-way for external gathering, and 3-way for internal gathering. 

 Communication capability:  

 2 standard RS485 multipoint communication ports  2 industrial ethernet ports (Option)  Supports single, dual network communication, it is fully qualified for network redundancy and backup  IEC-60870-5-103(RS485 communication mode),IEC-60870-5-104(industrial ethernet mode) standard communication protocol(Option) 

GPS clock synchronization function (Option)

The device is able to receive GPS clock minute synchronization (or second synchronization) through RS485 differentiate voltage, and it can be done with monitoring system to accomplish GPS precise clock synchronization.

Wanlida Feeder Protection Relay