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Table 8.9 Changing From Maintenance Bypass to UPS Power Supply
Step | Procedure | LCD/LED Status (After Execution) |
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1 | Same as steps |
| BYPASS |
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| Section 8.3.1 “Startup” |
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| MOVE #52R TO ‘ON’ POSITION |
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| ~ | ~ | ~ | UPS |
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| AC INPUT | CONVERTER | INVERTER |
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| FLOAT CHARGE |
| AC | ~ |
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| BATTERIES | EQUAL CHARGE |
| SWITCH |
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| DISCHARGE |
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| AC OUTPUT |
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~ |
| BYPASS |
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BYPASS INPUT |
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52R | 72B | 52C | 52M | 52L |
MCCB | OFF OFF ON OFF ON |
2Turn OFF maintenance
bypass AC circuit breaker | BYPASS |
52M. *,**,*** |
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MOVE #52R TO ‘ON’ POSITION
~ | ~ | ~ | UPS |
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AC INPUT | CONVERTER | INVERTER |
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| FLOAT CHARGE |
| AC | ~ |
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BATTERIES | EQUAL CHARGE |
| SWITCH |
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| DISCHARGE |
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| AC OUTPUT |
~
BYPASS
BYPASS INPUT
52R | 72B | 52C | 52M | 52L |
MCCB | OFF OFF ON ON ON |
3Same as steps
→Change to UPS power supply complete.
*During load operation, ALWAYS operate the circuit breakers in the following order: 52C ON → 52L ON → 52M OFF
**UPS power supply is disabled when the 52M circuit breaker is in the on state.
***This operation is different from that displayed in the help message on the screen. Be sure to perform the operation as described here.
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