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Chapter 3 Testing, Operation and Maintenance of the Power System
33
Chapter 3 Testing, Operation and Maintenance of
the Power System
3.1 First Power On
Power systems have been tested strictly in the factory before delivery. After the
installation of the power system , the following shall be inspected carefully before
the first power on.
■ Check that the connections of AC input cables, DC output cables, and battery
cables are secured, and that all the screws are not loose.
■ Check to make sure that all circuit breakers on the distribution module are off
(pulled downwards).
■ Testing with a universal meter to insure that there is not any short circuit
phenomenon in the AC input and the output terminals.
■ Check the connection between DC output and battery, check the numbering,
line sequence and polarity. Check the firm connection of cable terminals. Check to
make sure of the correct and reliable connection of bus bar. Check again the
polarity and sequence of battery connection.
After above inspections, the system can now be tested with first power on.
1. Turn on the AC power for the power system. Measure the voltage of AC input
with universal meter at terminals of L, N. If the AC power supply is abnormal, check
the AC power source.
2. When AC power is confirmed to be normal, close AC input circuit breaker of
distribution module (push upwards). After a short delay of start-up, all operation
indicators (green) on the panels of rectifier modules should be on. And the RUN
indicator (green) of the monitoring module shall be flashing continuously, ALM
indicators (red) should be on (the monitoring module will send out alarms since
some switches are not closed).
3. Check the polarity and terminal voltage of "BATT(+)" and "BATT(-)" with a
universal meter (about 53V). If it is normal, close control circuit breaker of battery
branch and connect the battery into the system.
4. Close control circuit breaker of load branch, the power system will power supply
to the communication load.
If all above results are normal, it means that the power system is working under
normal conditions and the next step of testing can be conducted.
GIE 4820/3A/3.45KW Power Supply System User Manual
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