SECTION IV
Maintenance
Page 4.6
BP+2.9X
11/95
4.6 Battery Maintenance (continued)
4.6.1
Safety Precautions (continued)
3. Wear rubber gloves and boots.
4. Do not lay tools or metal parts on top of batteries.
5. Open DC Disconnect switch prior to connecting or
disconnecting battery terminals.
6.
Determine if the battery is inadvertently grounded. If
inadvertently grounded, remove the source of the ground.
Contact with any part of a grounded battery can result in
electrical shock. The likelihood of such a shock will be
reduced if such grounds are removed during installation
and maintenance.
4.6.2
Maintenance Shutdown of Battery Pack
This procedure is for shutting down the IPM battery pack. It does not
require that the protected load be removed from the UPS.
Perform the following steps in the order presented:
1. Verify that each UPS attached to the
battery pack is running on UPS input ac power
by noting the dc link voltage. Depress or
beneath DISPLAY SELECT to obtain the Link
Voltage message on the screen. Voltage should
be 234 VDC (10-30 kVA) or 390 VDC (37.5-150 kVA) or greater.
Do not proceed if battery system is supplying power to any protected
equipment.
2. Shut off DC Disconnect switch. This will illuminate the
Battery Not
Available
LED.
3. A general alarm will appear at each UPS as the Disconnect device is
opened. This is normal. Depress the ALARM SILENCE button once to turn off the
audible alarm.
Link Voltage
Battery Amps
Max Out CF