UPA-20M primary current injector up to 20 kA

DTE-20M current injector

DTE-20M primary current injector

AC high current primary curren tinjector DTE-20M purpose is functional check and taking ampere second characteristics of automatic circuit breakers working in AC in range of 20A-20kA. DTE-20M registers current values and tripping time of automatic circuit breakers. Also DTE-20M can be used as source of AC current, adjustable up to 20kA, in low impedance power networks.

Can be used both in single-phase and three-phase networks.

DTE-20M primary current injector is a mobile device, which could be easily transported to a required testing location.


  • Supply voltage, V                                                                 380 ± 10% (220 ± 10%)      
  • Frequency, Hz                                                                      50/60
  • Max output current on busbars, kA (rms)                             20 kA for 380 V input (13 kA for 220 V input)       
  • Max output voltage on busbars, V                                        7          
  • Output current measuring range (true RMS), A                   20-20000
  • Current measurement reduced error, %                              3            
  • Tripping time measuring range, seconds                             0.01-1000                  
  • Time measurement reduced error, %                                  1.5
  • Temperature protection tripping, °С                                     96±10%
  • Capacity (Burden), kVA                                                       120
  • Current consumption of supply network, A                         140
  • Net weight, kg                                                                      86 (without busbars)
  • Dimensions, mm                                                                  1097x650x870
  • Duty cycle                                                                            5 min ON / 20 min OFF

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