Turns ratio testing

Download Transformer Testing Equipment catalogue

Multifunction transformer and substation test system

TRAX - Multifunction Transformer and Substation Test System

True 3 Phase Transformer Turns Ratiometer

TTRU3

3-phase ratio and winding resistance analyser

MWA300 and MWA330A

Transformer Ratio Standard

TRS1

Three-phase transformer turns ratio test set

TTR310E and TTR330A

Hand-held Transformer Turns Ratio Tester

TTR25-1

Acceptance & Maintenance Test Data Management Software

PowerDB™ Pro

The transformer turns ratio test, or TTR test, confirms that the transformer has the correct ratio of primary turns to secondary turns. Using this test correctly can help to identify tap changer performance, shorted turns, open windings, incorrect winding connections and other faults inside transformers. Megger’s range of TTR testers are robust to withstand the harsh conditions that some transformer testing in. The range includes varying features to simplify and speed up testing as well as 3 phase TTR testers and PT and CT TTR testers.