Capacitor protection unit

AW-ECP-II series capacitor protection unit is stable and reliable, fully functional. It adopts the current advanced digital signal processing technology and EMC Technology and mainly applies to the protection of capacitor banks for transmission and distribution system. Key features include: undervoltage protection, overvoltage protection, open delta voltage / differential current protection, overcurrent protection, quickbreak protection, time limit overcurrent protection, unbalanced current protection, input protection, etc.
Capacitor protection unit

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Product features

  • Applications: Cap protection
  • Human-machine interface: 3.5 inch screen
  • Communication interface: RS485
  • Number of protection groups: One Group
  • Records: Protection records
  • Working power supply: AC/DC220V±15%
  • Communication protocol: Modbus/103
  • Protection item: 

     Overvoltage/undervoltage protection
     Open delta voltage / differential current protection
     Three-stage interphase current protection 
     Unbalanced current protection
     Opening protection

 

 

Technical specification

Basic parameters:

  • Size:205mm×82mm×135mm(L×W×H) 
  • Working power supply:AC/DC220V±15%

 

Rated sampling Parameter:

  • Voltage:AC100V 
  • Current:1A/5A

 

Input circuit:

  • Protect sampling input:

     Three-phase current of the bus voltage and capacitor, differential current /open delta voltage may be measured.

  • Current: 0.1A~1A/5A                  
  • Voltage: 0~150V
  • Open delta voltage: 0.1~100V 
  • Comprehensive Error: <0.5%

 

Output circuit:

  • Number of output circuits:

     1-channel Closing output (Pulse), 1-channel Local trip output(Pulse), 1-channel upper trip output(Pulse), 1-channel Latching output(Holding), 1-channel Alarm Output(Holding).

  • Relay capacity: AC250V,16A(Purely resistive)
  • Pulse holding time: 2s

 

Input:

  • Input feedback of capacitor
  • Capacitors outlet cabinet position signal
  • Remote opening (open protection) signal
  • Remote closing signal

 

Use environment:

  • Temperature: -20℃ ~ +70℃(or -40℃ ~ +85℃)
  • Humidity: ≤95%
  • Degree of pollution: III

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