Commissioning; Connecting The Ac Power Supply - Huawei TP48120A-HD15A1 Installation Manual

TP48120A-HD15A1 & TP48120A-HD15A2 &
TP48200A-HD15A1 & TP48200A-HD15A2
Installation Guide
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10.1 Connecting the AC Power Supply

Procedure
Step 1 Measure the input voltage on the AC input circuit breaker. The value should range from 85 V
AC to 300 V AC.
Step 2 Switch on the AC input circuit breaker and measure the output voltage of the AC input circuit
breaker. The value should range from 85 V AC to 300 V AC.
Step 3 Check that the power indicators on the rectifiers are steady on.
Step 4 Measure the voltage between the -48 V busbar and the RTN+ busbar. The value should range
from -42 V DC to -58 V DC.
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Issue 03 (2014-12-02)
The following commissioning procedure may result in power failure or alarms. Inform the
alarm center before and after the procedure.
Commissioning involves various technologies, requires trained personnel, and requires
compliance with commissioning instructions.
Commissioning is performed with the power on. Remove metal items such as watches and
necklaces, stand on dry insulating material, and use insulated tools.
Do not contact two electric bodies that have different currents during operations.
During commissioning, check that the status of the related unit or component meets
requirements before turning on any switch.
When you are performing operations and do not want others to operate, attach the label
"Do not turn on the switch because operations are in process." to the power distribution
device.
During commissioning, shut down the device immediately if any fault is detected. Rectify
the fault and proceed with the commissioning.
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Commissioning

10 Commissioning
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