Go Power! TS-50 - Manual (Page 8)

GP‐TS‐50
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8
4.2 General Low Voltage
Low voltage can be caused by low voltage conditions such as an RV park with
inadequate wiring for crowded camper conditions where everyone’s electricity
suffers (brownout). In this case a voltmeter will be helpful and will show a low
voltage reading from the park receptacle, even before the RV is plugged in. When
you experience general low voltage conditions, remember, that brownouts can be
harmful to most appliances. A better alternative might be to utilize the generator
until park voltage conditions improve.
4.3 Localized Low Voltage
Low voltage conditions can be caused by specific situations such as an additional
cord that is too long and too small for the load. Do not attempt to extend the RV
powercord by using a 16-gauge 100-foot extension cord, or any cord not rated for
an RV-size load. A localized low voltage condition will result when a load is turned
on that is larger for what which the cord is designed. As soon as the RV tries to
draw more current than the amount for which the cord is rated, the voltage will fall
within the length of the cord, and the RV will experience low voltage. This is
especially noticeable during in rush current situations such as an air conditioner
start-up. Contactor-based transfer switches are affected by this. The compressor
will try to start, the voltage will drop, which will cause the contactor to drop out, at
which point the voltage will rise to the pre-in rush level. The contacts will chatter
when the A/C compressor kicks in, however the voltage may read normal.
Most meters are not fast enough to record this voltage drop. You can test for low
voltage readings during this inrush cycle by reading voltage at the contactor
terminals while manually holding the contactor plunger down in its closed position.
This will override the chattering condition and the meter will have time to register
the reduced voltage. If this condition exists, identify and correct the low voltage
situation before proceeding further.
4.4 Physical Interference
Some transfer switch models have wiring connections made by wire nuts on 63
leads. Occasionally on these models, the wiring connections will get folded into the
cbox in such a manner that the wiring will interfere with the physical operation of
the relay. Visually inspect for free operation of the relay(s).
5. Hi-Pot Testing
(MANUFACTURING COMPANIES ONLY)