Transformer Turns Ratio Meter Uses - Raytech TR-MARK III Instruction Manual

NOTE
⇒ The TR-MARK III makes all the calculations and interconnections
⇒ Hooking up to a transformer:
⇒ Negative (reverse polarity) hook up is also automatically detected.

3.4.3 Transformer Turns Ratio Meter uses:

A Transformer Turns Ratio Meter is very useful as a tool for investigating problems
associated with the core, the windings, and the tap changer of transformers and should be
used for:
1. Identify shorted turns and finding turn errors
2. Defective and incorrect tap settings
3. Finding mislabeled terminals and mislabeled nameplates
Turns Ratio testing is a required test during the manufacture of transformers. It is too a part
of a good routine preventative maintenance program as well as for Acceptance testing.
90100.1.02 Instruction Manual TR-MARK III
required, when the correct configurations of single (1) phase and three
(3) phase transformers are selected. In most cases, no other external
connections, other than the test leads provided, are required.
But please check chapter '1 Safety Precautions' for safety grounding.
The TR-MARK III protects against a wrong hook-up to a transformer or
testing a severely defective transformer. Every effort has been made to
alert the operator when something is wrong.
Page 10 of 70