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MITSUBISHI ELECTRIC 9800A SERIES UPS
Page Number:
3-24
MITSUBISHI
ELECTRIC
9800A SERIES UPS
OWNERS / TECHNICAL MANUAL
3.4 Operating Procedures
For MMS, Refer section “D) MMS Start-up Procedure”.
A) Start-up Procedure
a.) Verify that the External Bypass Input Circuit Breaker for each unit is closed
(Breaker is user supplied.)
b.) If a dual source is feeding the UPS, close the External AC Rectifier Input Circuit
Breaker manually (user supplied).
Start-up of UPS
1. Verify that Control Circuit Breakers (CPM) is closed.
(When Inverter is stopped, the Control Circuit Breaker is not normally opened)
2. The pre-charging cycle will begin and Input Contactor (CB1) will close automatically.
3. Close Battery Disconnect Circuit Breaker (CB2).
4. The inverter can now be started.
Note: When "REMOTE OPERATION MODE" is displayed on the LCD panel, the inverter
start operation can only be performed remotely. If local inverter start operation is required
(at the UPS), select "LOCAL" in "Remote/Local" selection in setup page. Select “LOCAL”
mode for the purpose of this start up procedure.
5. On the LCD panel, select “START/STOP MENU” and press the “START” key.
6. The Inverter will start within 5 seconds. Start up is complete.
540V
FIGURE 3.5-a Start-up Procedure