Overload and endurance tests

The goal of the tests is to check the capacity of switchgears to achieve a high number of operations in abnormal conditions (overload up to 10 times the nominal current) and normal conditions (nominal current).


Three facilities offer very flexible adjustment possibilities:

  • Each of the three independent testing stations is supplied by a transformer of 8,4 MVA,
  • The transformers can be adjusted on output voltages from:
    • 220 V AC to 1,130V AC 3 phases,
    • 120 V AC to 1,130V AC 1 phase.
  • DC voltages range from 290 V to 1,575 V,
  • Endurance test up to 5,000 A,
  • Overload tests up to 10,000 A,
  • Short-circuit capacity of each transformer: 50 kA,
  • Loads banks for current and power factor or time constant for accurate adjustments.


Convenient facilities make calibration of overload and endurance tests quick and safe.

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