The ClearTest transformer tester is a completely new design that briefly energizes the transformer and takes a snapshot of the transformer condition by measuring the voltage, current and power factor of the test signal. The ClearTest transformer tester finds transformer defects that include:
  • A single shorted turn in the primary or secondary side of a transformer
  • Open coils or blown internal fuses or breakers
  • Partial shorts including shorted turns, shorted turn layers coil to core shorts and primary to secondary shorts
  • Bad transformer ratios resulting from shorted turns

Clear Results -
Finds defects invisible to other testers

  • Finds internal transformer defects before energizing
  • One tester for all transformer types
  • Test the primary and secondary sides of de-energized transformers without disconnecting
  • Tests all connections from transformer to meter
  • Improve SAIDI statistics by quickly testing and getting the transformer back in service
  • Prevents line workers from installing a fuse on a shorted transformer
  • Quickly verifies the secondary connections are not shorted
  • Compact, lightweight and easy-to-use
  • Powered by two 9V field replaceable lithium or alkaline batteries
  • Audible alarm confirms successful test
  • Built-in self test
  • A magnet is included to hold the ClearTest transformer tester in place while testing

The ClearTest Transformer Tester looks inside the transformer to find defects that are invisible to other testers

Clear Results Are Key

The ClearTest transformer tester can test new or reworked, single or three phase transformers and all the connections made to them, up to and including the revenue meter.

Versatility... Simplified

It is a handheld device with a single pushbutton that provides a clear indication of open circuits, short circuits, including shorted turns or shorted windings.

Your Go-To Tester

  • Use it in the field to test the primary and secondary sides of transformer installations for short circuits prior to energizing.

  • In the shop, use it for quick screening of incoming and outgoing transformers for primary and secondary shorts or opens, including internal fuses and breakers.

Download the ClearTest® transformer tester product brochure
for additional information

Cleartest pdf cover

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