High Current Transformers

High Current Transformers are designed to elevate and check the temperature of conductors at high current levels, in order to simulate the current loading conditions found in electrical circuits.

High Current Transformers are designed as an open type transformer. They use the test object as their secondary coil, or have 1- or 2-turn self secondary winding. The core temperature of the conductors depends on the short-circuit high current caused by the test object. Depending on the current going through the test object, the test temperature of the conductor will change. The loop temperature is measured by a thermocouple probe which is directly connected to conductor.


Technical Specifications
Transformer types Dry type / Single phase / AC
Rated input voltage 230 V / 400 V *
Rated output current Up to 10 kA
Rated output voltage 1 V, 2 V, 3 V, 4 V, 6 V, 10 V, 20 V, 40 V *
Rated capacity Up to 120 kVA * for single phase
Frequency 50 Hz / 60 Hz
Options Complete solution with self-regulation of output voltage function for single phase or 3 phase

*Consult factory for higher values.


Typical Applications


  • Contact temperature measurement of MV switchgears
  • Temperature rise test for cables
  • CT injection testing
  • Short-circuit labs
  • Pipe pre-heating
  • CB testing
  • Electric ovens
  • Melting of aluminium