M
AVTMMTO210 Rev 7 Sept 2013
36
Testing Voltage Regulators
This procedure describes the basic connections to a single-phase regulator. The
main test for a regulator is the evaluation of the condition of the tap positions.
Because there are a large number of taps (typical 15 to 32), this test would
normally take a very long time. With the MTO, this test time is drastically
reduced because the instrument will stay on while changing “On load” tap
positions.
All regulators have internal bridging reactors. It is because of these reactors that
stabliization time for the MTO will vary. On odd position taps, balance time will
be longer than even positions. This is due to circulating current generated when
on odd positions and is shown below:
Figure 7: Odd Position Tap
Figure 8: Even Position Tap
To Next Page
Loading...
