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10
RAYTECH Switzerland
The Ratiometer sense circuit can be checked by connecting the
measuring lead clips of the TR-1 & TR-1P together in the following
manner:
H1
lead (Red Clip /Red wire) to
X1
lead (Black Clip / Black wire)
H0
lead (Red Clip / Red wire) to
X0
lead (Black clip / Black wire)
To avoid overload of the measuring instrument, the short circuit test does
not start without a load. Connect in between this 2 contact points
(H1/X1 and H0/X0) a test object (1 Transormer winding). Connecting a
DC resistance only (as a load) will not guarantee a successful test.
The "
GO
" Will appear in the test screen. No Ratio test can be performed
however.
Press the Digipot down. Wait for initialization and calibration pre-test.
To select the correct test voltage in the Set up menu, turn and highlight
"SETUP”. Press down on the Digipot. Select "UTEST". There are two
choices: 40V for standard Potential Transformers and CT or Auto for
Current transformers. Select the proper Test voltage level. EXIT that
menu.
After connecting to a transformer and having the "GO" appear in the test
screen; Highlight and press "GO" and the test set will automatically test
that ratio and store the result in the next memory location.
You may print the result now or recall the saved values from memory
and print at a later time.
