Operating the MTO210
AVTMTO210 Rev 7 Sept 2013
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indicator that you are in Remote Mode and the button is functioning
properly.
3. To start a test sequence, press on the front panel. This will NOT
cause the test to start but only illuminate the HV Indicator. The Remote
Indicator will stay off.
4. The operator will go to the tap changer, verify it is in the correct starting
position, and then to start the first test, press .
The Remote Indicator will slow flash to indicate charging. When the Remote
Indicator goes steady the reading is stable.
5. Pressing will cause the stable result to be saved to memory. The
MTO is always monitoring for a tap change interrupts.
If a Break Before Make condition occurs the Break Before Make Indicator will
flash rapidly.
Depending on the length of the break, one of two things will happen.
1. For short breaks, the unit will rapidly flash, but the system will continue
to operate and give resistance readings. Press to acknowledge and
store the event or press to delete the event.
2. For breaks longer than about 200 msecs, the system will automatically
shut down. The HV Indicator will extinguish and the Discharge Indicator
and Remote Indicator will flash.
To extinguish the Break Before Make Indicator, press .
If no such condition exists the Remote Indicator will start slow flashing again
until the circuit stabilizes from the tap change and then go steady when this
setting has stabilized.
3. Press to record the reading again and the process continues till all
transformer taps are tested.
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