KPM60 Digital motor protection relay

KPM60 Digital motor protection relay

KPM60 low voltage multifunction digital motor protection relay is suitable for the application of three-phase asynchronous motor with rated voltage of 380V to 660V and rated current of 5-500A. It can realize the functions of protection, control, measurement and fault management of the motor, greatly simplifying the secondary control protection circuit of the motor, providing perfect protection and control measures, and implementing the network camp of the motor based on various presidential communication methods. 


  • KPM60 Multifunction digital motor protection relay
  • Full electrical parameter measurement:
  • UL-L, UL-N, I, F, PF, P, Q, S, active and reactive energy, etc. 
  • High accuracy: 
  • U Class 0.5; I Class 1.0.
  • Leakage current Class 1.0.
  • PF Class 1.0.
  • P Class 2.0; active and reactive energy Class 2.0.
  • Basic protection function:
  • Overtime start-up, overload, stall, phase failure, current balance, grounding, underload, blocking, etc.
  • Optional protection function:
  • Leakage protection, temperature protection, overvoltage protection, undervoltage protection;
  • underpower protection, power factor protection, phase sequence protection, etc.
  • Control mode:
  • protection mode, direct start, bidirectional reversible start, star / triangle start, self-turning transformer start, resistance barrier start, etc. 
  • DI & DO:
  • 8*DI, 4*DO
  • Record function:
  • 10 recent fault information, time information, fault site electrical parameters.
  • Communication: MODBUS RTU / PROFIBUS-DP
  • Diagnostic data:
  • Self-test information;Current/ Auxiliary contact feed back error;
  • Motor fault alarm information; Motor fault trip information;
  • Running cooldown time


Working power source Operating Voltage AC85~265V/DC80~300V
  Rated power <5VA
Input voltage Rated voltage 380V-660V
  Frequency range 45~65Hz
Input current Rated current 5A,32A, 100A, 250A, 500A
  Frequency range 45~65Hz
Input/Output Switch value input 8-way passive main line contact DI input, internal supply DC24V power source
  Relay output 4-way DO output,Contact capacity 250VAC/5A,30VDC/5A
  Analog output Output range 4~20mA,Programmable
  Temperature input Measure range 0℃~100℃
Measurement accuracy Current ±1.0%(10%Ie~120%Ie)
  Leakage current ±1.0%(5%Ise~100%Ise)
  Voltage ±0.5%(20%Ue~150%Ue)
  Frequency ±0.02Hz(45Hz~65Hz)
  Power factor ±1.0%(-1~1)
  Energy ±2.0%
  Power ±2.0%
Communication Communication interface RS485,Photoelectric isolation interface
  Communication protocol Modbus-RTU,1200~38400bps
Electrical insulation Power frequency withstand voltage AC2kV/min~1mA Input-output-power source (GB/T 13729)
  Insulation resistance >50MΩ                            (GB/T 13729)
  Impact voltage 5kV(Peak),1.2/50us    (GB/T 13729)
Working environment Operating temperature -25℃ ~ +70℃
  Relative humidity 5%~95% No condensation
  Storage temperature -30℃ ~ +75℃
Electromagnetic Compatibility Surge (impact) immunity GB/T 17626.5-2008,Level3
  Electrical fast burst immunity GB/T 17626.4-2008,Level3
   Electrostatic discharge immunity GB/T 17626.2-2006,Level3
  Power frequency magnetic field immunity GB/T 17626.8-2006,Level3

KPM60 Specification Jan 01,70
KPM60 User manual Jan 01,70

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