TS_604_01 PowerWave PW3000/TP User Manual UK 5/1/18
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4: Operating procedures
4.9
Parallel system start-up
Use this procedure to start a multi-module parallel UPS system from a completely powered down condition.
1. Check that all the loads connected to the UPS are turned off.
2. Check that the individual modules’ Output Breakers and the System Output Breaker are all open.
On each module in turn
3. Close the external UPS Input/bypass Isolators as required to connect power to the UPS.
4. If an external battery cabinet is used, close the fused isolator on the back of the battery cabinet together with any
circuit breaker connected in the battery line.
5. On the back of the UPS cabinet, close the input breakers M1 and M2 (position
ON
).
a) The fans will start running.
b) The UPS will perform a self-test and then display the default menu on the LCD.
6. Check that no abnormal conditions are shown on any of the modules’ LCD panel.
System start-up
7. On the UPS Control Panel of ANY module, press the
ON/OFF
key for more than one second.
a) The alarm buzzer will sound and ALL the UPS modules will start.
b) After a few seconds, ALL the UPS modules should switch to the ‘on-line’ mode simultaneously.
8. Check that no abnormal conditions are shown on any of the modules’ LCD panel.
9. On any one of the UPS modules, press the
ON/OFF
key continuously for more than three seconds.
a) All UPS modules will transfer to ‘on-bypass’ mode simultaneously.
10. Check that no abnormal conditions are shown on any of the modules’ LCD panel.
11. Close the output breaker on ALL modules to parallel the UPS output.
12. On any one of the UPS modules, press the
ON/OFF
key continuously for more than three seconds.
a) All the UPS modules will switch to the ‘on-line’ mode.
13. Close the System Output Breaker, to connect the UPS output to the load distribution panel.
14. The parallel UPS system is now fully operational and providing protected output power.
15. You can now switch on the loads.
(If possible, turn on the loads sequentially to prevent any UPS overloads occurring due to combined inrush currents.)
4.10 Parallel system – changing the operating mode
When the parallel system is turned on and operational you can quickly switch between its various operating modes as
shown below:
From
To
Action
ON-LINE
ON-BYPASS
*
Press the
ON/OFF
key for 3 seconds on ANY module.
ON-BYPASS
ON-LINE
Press the
ON/OFF
key for 3 seconds on ANY module.
ON-BATTERY
ON-LINE
Restore the mains.bypass power supply.
*
If the bypass is disabled in the
SETTINGS
menu, when pressing the
ON/OFF
key for three seconds the UPS will go
from ON-LINE to ON-BATTERY
mode.
