Phone: (714) 970-2304 Fax: (909) 930-3335
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www.DSPManufacturing.com
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BATTERY SYSTEM TEST
1. Make sure A.C. input circuit breaker is OFF.
2. Make sure battery circuit breakers are OFF.
3. Use a meter and note the D.C. voltage at the battery circuit breaker. The voltage
must be the correct polarity positive lead of the meter to the positive terminal of
the circuit breaker.
4. The D.C. voltage should read between115 to 130 VDC for a 10 battery string,
and 210 to 230 VDC for an 18 battery string. If the D.C voltage reads below
these voltage levels, this means the battery cables are not connected correctly.
5. If the battery polarity and voltage level are correct, continue to “Starting the
UPS”.