Vanguard TRM-20_40 User Manual
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REV 1 TRM-20 AND TRM-40 USER’S MANUAL
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3.5 General
Procedures
The main steps for using the TRM are outlined below:
a. Ground the TRM to the substation ground.
WARNING
Always connect the TRM to the substation ground before connecting any
test lead to any transformer bushing. Failure to follow this procedure may
damage the TRM.
b. Plug the TRM power cable into a power outlet.
c. Insert current-cable plugs and voltage-sensing cable plugs into the corresponding
control panel jacks.
d. Attach the test cable clamps to the transformer terminal for the winding that is to be
measured.
e. Turn on the TRM.
f. The unit will self-calibrate, and then you will be presented with the “START-UP” menu as
shown below:
1. RUN TEST
2. SETUP
3. USER DIAGNOSTICS
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