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An electric arcs can cause heavy damage and present a serious hazard to operating personal by switchgear. Several features may cause the arcing fault at switchgear such as the aging of insulation or operation mistake at switchgear. Kumwell Arc Protection Relay is the real-time distributed systems based on high-speed technology can rapid removal of arcing fault, reduce damage and improve personal safety. Kumwell Arc Protection Relay has been put in use in a number of key projects. Product tested according to standard IEC 60255-2009.
KAPS131 Central Unit
Main Function
  • Power supply : 100…240 ±10% V ac/dc
  • LCD Display
  • Loop type Sensor
  • 10 Arc sensor Inputs
  • Trip time: ≤ 10 milliseconds
  • 6 Trip outputs
  • 6 Current inputs
  • Current setting, For Ph/Ground : 0.01…20xIn
Support Function
  • Fiber optic loop check supervision
  • Continuous system self-supervision
  • Event logs, disturbance recording and real-time clock
  • Wave record and standard Comtrade file output (CFG format file)
  • Communication protocol support for MODBUS-RTU,IEC61850, IEC60870-5-103.
KAPS131-FEDU Feeder Unit
Main Function
  • Power supply : 24…48 ±20% Vdc
  • Two operation modes: one is independently working mode; the other is extension to KAPS131 system
  • CT Rated current : 1A or 5 A
  • Current setting, For phase Ip : 0.01…20xIn
  • Current setting, For ground I0 : 0.01…20xIn
  • Supports 4 current inputs (Optional)
  • Support 4 loop type arc sensors
  • Supports 4 trip outputs
Support Function
  • Fiber optic loop check supervision
  • Continuous system self-supervision
  • Status, fault and trip indications
  • Real-time wave record and standard COMTRADE file output
  • Communication protocol support for MODBUS-RTU interfacing
KAPS131-EXU Arc Extension Unit
Main Function
  • Power supply : 24…48 ±20% Vdc
  • Support 8 loop type arc sensors
Support Function
  • Fiber optic loop check supervision
  • Real-time wave record and standard COMTRADE file output
  • Status, fault indications
ARC Censor
Loop Type Advantages
  • Easy installation
  • High cost efficiency
  • Along the length can detect