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Magnum VS –48 Vdc User Manual Page 22
3.2. Commissioning
Initial Set-up
1. Remove all rectifiers.
2. Disconnect battery by removing a link in each string or opening the battery disconnects.
3. Check that battery voltage does not appear on the system bus.
4. Disconnect all loads.
AC Power Up
WARNING: The dc power plant is supplied from a nominal high voltage ac voltage source.
Keep the ac input enclosure cover in place when the system is operational or energized
1. Verify that all of the circuit breaker positions are labeled to the corresponding rectifier correctly.
2. Insert all rectifiers.
3. Turn all rectifier circuit breakers on.
4. Each rectifier should have green Input Healthy and Output Healthy LEDs illuminated.
NOTE: When ac power is initially applied, there is a 60-second period during which no alarms are reported.
DC Power Up:
1. Verify, with a voltmeter, that the DC voltage is within 0.1 Vdc of the System Voltage
2. Using the Controller interface (direct serial or network-based connection), adjust battery float voltage to
negative 49 Vdc.
3. Verify System Low Voltage Alarm.
4. Using the Controller interface (direct serial or network-based connection), adjust battery float voltage to
negative 57 Vdc.
5. Verify System High Voltage Alarm.
6. Restore the battery float voltage to negative 54.00 Vdc or desired voltage.