Operation
AVTMTTR330 Rev 3 March 2010
27
Owner:
User specified field
SN:
Serial Number of Test Instrument
Language:
Indicates displayed language
Save File Prefix:
All Saved files will begin with this prefix
Units:
Units of Measure setting
Type:
Transformer type convention
Test voltage:
Default test signal voltage level
Show Diagram Number:
Allows Transformer type diagram number to be
shown on test form
Default form:
Indicates default form, upon power-up
Remote Control Operation for LTC Testing
Use the remote control mode of the TTR for load tap changer (LTC) testing.
The remote control mode provides two-way-communication between the
operator and the TTR, allowing you to stay close to an LTC, change taps, and
initiate the test routine.
Connect the hand-held control unit, Megger p/n 30915-220, to the Remote
Trigger Receptacle port of the TTR. The remote control unit pushbutton lamp
will illuminate.
Now an operator may come to the remote location, and set (for example), the
LTC to the desired position, and would then depress the remote control unit
pushbutton for a short time, then release it. The pushbutton lamp extinguishes
until the TTR is ready for the next test. When the current testing is complete, the
test results are automatically saved, the test ID is advanced to the next number,
the pushbutton lamp lights, and the TTR test set is ready for the next remote test
Error Messages
When an error message appears in the transformer test result screen indicating an
abnormal operating condition, verify the condition by taking a repeat
measurement before attempting to take any corrective action.
Open connections, wrong connections, open windings, shorted windings, high
resistance windings, other abnormal transformer problems, or a combination of
these may cause a large deviation from normal turn ratio or indicate an unusual
message. The unusual operating conditions may be caused by an abnormal
leakage reactance or capacitive coupling within the transformer windings. If
abnormal operating conditions occur during transformer testing, error messages
may appear (such as below) and may be accompanied by three short beeps.
Содержание Three-Phase TTR
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Страница 3: ...Three Phase TTR Transformer Turn Ratio Test Set TTR330 Series...
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Страница 38: ...M AVTMTTR330 Rev 3 March 2010 30 M...
Страница 52: ...M AVTMTTR330 Rev 3 March 2010 44 M...
Страница 68: ...M AVTMTTR300 Rev B Sept 2008 60...
Страница 70: ...M AVTMTTR300 Rev B Sept 2008 62 M...
