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Operation 61
Go to the module Master Menu and move the cursor to SHUTDOWN PROCEDURES. Press the Select pad
and the module Shutdown Procedures screen is displayed.
This two-page screen contains the steps you must follow to perform a controlled shutdown of each UPS module.
The instructions are listed so you can review them before performing the controlled shutdown.
Figure 40 Module Shutdown Procedures Screen
To perform the shutdown procedure, transfer the critical load from the UPS system to the bypass line (at the
SCC). Then trip open the UPS module output and battery circuit breaker (MBD), and manually open the UPS
module input circuit breaker. The Control Power switch may be turned Off if required for maintenance proce-
dures.
Refer to 3.3.3 - Shutdown Procedures for more details, including module shutdowns for service and emergency
shutdowns.
SHUTDOWN PROCEDURES
NEXT PAGE
MASTER MENU
1. If load can not be supported by the remaining modules when this module
is taken off line, go to the system control cabinet and select the "LOAD
TRANSFER PROCEDURES" screen. Follow the instructions to transfer
to bypass.
2. Open the module output breaker bysimultaneously pressing the OUTPUTTRIP
and CONTROL ENABLE pushbuttons.
3. Open the module batterybreaker by simultaneously pressing the BATTERYTRIP
and CONTROL ENABLE pushbuttons.
4. Manually open the input breaker bymoving the handle to the OFF position.
DOWN :
SELECT :
FIRST PAGE
MASTER MENU
5. Verify breaker status on the "MONITOR / MIMIC" screen.
6. If necessary for maintenance purposes, turn the control power switch (fuse
disconnect on some models) to the OFF position.
7. Wait a minimum of two (2) minutes before attempting any otheraction.
UP :
SELECT :
SHUTDOWN PROCEDURES (Cont'd)