Eaton Power Xpert 9395 550/275, Инструкция по установке и эксплуатации

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UPS Operating Instructions
Power Xpert
TM
9395 550/275 UPS (225–550 kVA) Installation and Operation Manual 164201716—Rev 8 www.eaton.com/powerquality 7-41
2. Transfer the UPSs to bypass by performing the procedure in paragraph 7.4.17.
3. Perform the LOAD OFF procedure in paragraph 7.4.27.
The input, output, battery, and bypass backfeed contactors open, and the power module is turned off.
WARNING
Power is present inside the UPS cabinet until the upstream input feeder circuit breaker is opened.
4. If the UPSs contain input breakers (CB1), open all UPS input breakers.
5. Open the input and bypass feeder circuit breakers on all UPSs.
7.4.26 Charger Control
To turn the battery charger on:
1. Press the CONTROLS pushbutton on the main menu bar. The System Status screen is displayed.
2. On the System Status screen, select the CHARGER command.
3. Press the CONTROLS pushbutton on the System Status menu bar. The Charger Control Command
screen is displayed.
4. On the Charger Control Command screen, select CHARGER ON .
5. Press the SELECT pushbutton on the Charger Command menu bar.
To turn the battery charger off:
1. Press the CONTROLS pushbutton on the main menu bar. The System Status screen is displayed.
2. On the System Status screen, select the CHARGER command.
3. Press the CONTROLS pushbutton on the System Status menu bar. The Charger Control Command
screen is displayed.
4. On the Charger Control Command screen, select CHARGER OFF .
5. Press the SELECT pushbutton on the Charger Command menu bar.
7.4.27 Using the UPS LOAD OFF Pushbutton or Command
A UPS Load Off is initiated by the LOAD OFF pushbutton from the main menu bar, the Load Off command on
the UPS Control Command screen, or the Load Off command on the Bypass Control Command screen. The
UPS
LOAD OFF
controls the UPSs' outputs by powering down the UPS and de–energizing the critical load.
The UPSs (including Bypass) remain off until restarted.
To use the LOAD OFF pushbutton:
1. Press the LOAD OFF pushbutton on the UPS to shut down.
The Load Off screen is displayed, providing a choice to proceed or abort the shutdown.
CAUTION
All power to the critical load is lost when the LOAD OFF is selected in the following step. You should use
this feature only when you want to de–energize the critical load.
2. To shut down the UPS, press LOAD OFF from the Load Off menu bar, and hold for three seconds. To abort
the shutdown, press CANCEL .
NOTE The UPS Load Off controls each UPS independently and does not shut down the
whole distributed bypass system unless all UPSs have been transferred to bypass.
To immediately shut down the whole system, use the REPO switch (see
paragraph 7.4.28).