Transformer Winding Resistance and Tap-changer Test Set

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• Dual independent channels for simultaneous measurements on two windings
• Built-in safety discharge and shut-down feature
• Tests operation of on-load tap-changers

This lightweight, field portable unit safely and accurately measures the DC winding resistance of all types of transformers and rotating machines. A built-in circuitry safely discharges the specimen when the test is completed, if load accidentally disconnected or if line power is lost.

The Transformer Ohmmeter is extremely useful when testing the operation of on-load tap-changers. This instrument can be used to check the make-before-break operation of on-load tap-changers and also to measure the contact resistance of each tap position.

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