Powerware 9305 HS Series, Руководство пользователя и инструкция по установке

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20 - 80 kVA parallel UPS systems
User’s and Installation Manual
1018390
Revision C 41
It is possible to shut down a single UPS module and still get maximum protection for the
critical load. This operation requires that the parallel system to be in the N+1 redundancy
mode. In capacity mode, the system bypass switch should be used to transfer the system to
bypass power.
Use the following procedure when you want to do service for a redundant UPS module:
1. Check that the UPS module is in the operational condition (open front door):
– Main switch, main circuit breaker, and battery breakers are in the ‘ON’ position
– Output breaker in the ‘ON’ position and has not been tripped.
– No critical alarms or “Loss of redundancy” message in the control panel display.
2. Check that the parallel UPS system is in the N+1 redundancy mode.
(Press Menu button, choose UPS parameters display P31.)
The system bypass switch must be used first to transfer to ‘BYPASS’ if the system is in
the N capacity mode. The critical load must be disconnected if system does not
contain the system bypass switch.
3. Turn the main switch S1 to the ‘OFF’ position
4. Turn off the battery circuit breakers F2 and F4 (20/30 kVA UPS modules with ext. BAT
cabinets).
5. Turn off the main circuit breaker F1 to the ‘OFF’ position.
6. Check that UPS ON or BATTERY LED’s are not lit.
– It has now stopped the supply of output power and is disconnected from the
batteries.
7. Disconnect the appropriate service switch (S1…S4) to ‘OFF’ position at the optional
SPM9305 or local tie panel. This prevents high voltage to be present in the output
terminals of the UPS module because of the parallel configuration.
Warning!
Be careful because there are still be high voltages and live parts inside of the UPS module.
8.5 Control panel operation
Operation of the panel are controlled with the push buttons under the LCD display. The
screen informs the user about the UPS type, measurements, and status alarms. The control
panel shows the status of UPS operation with four LED indicators. It also generates an
audible alarm if the user should be alerted.
The ‘MENU’ button allows the user to move through the options in the parameter menu.
Push buttons
↑↑↑↑↑ ↓↓↓↓↓
are used to moving in the submenus. Display functions are selected with
the push button
↵ ↵↵ ↵↵
.