Delta DPS-400K - External Battery Cabinet Connection

5-17
5
Installation and Wiring
5.5 External Battery Cabinet Connection Warnings
You should connect the DPS series UPS with at least one external battery cabinet to
ensure that the critical loads connected are protected when a power failure occurs. You can
connect at maximum four external battery cabinets to the UPS.
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To ensure that the batteries are fully charged, please charge the batteries at least 8
hours before initial use of the UPS. The charging procedures are as follows.
1. Connect the UPS to an AC power source and the external battery cabinet. Please
see 5. Installation and Wiring.
2. Follow 7. UPS Operation to turn on the UPS and the external battery cabinet. After
the UPS is turned on, the unit will automatically charge the batteries.
WARNING:
You can connect the critical loads to the UPS only after the batteries are fully
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the critical loads connected when a power failure occurs.
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Battery
1. Charge voltage:
1) Float voltage: ±272Vdc (default)
2) Boost voltage: ±288Vdc (default)
2. Charge Current:
1) Min: ±10A
2) Max: ±130A
3) Default: 10A
NOTE:
If you want to modify the charge current default setting, please
contact your local dealer or customer service.
3. Low Battery Shutdown: ±190~220Vdc (default: 200Vdc)
NOTE:
If you want to modify the low battery shutdown default setting,
please contact your local dealer or customer service.
4. The number of batteries: 12V × 40 PCS
NOTE:
You can also choose 12V × 38 PCS or 12V × 42 PCS batteries.
Please contact your local dealer or customer service for battery selection,
installation and replacement.
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Only use the same type of batteries from the same supplier. Never use old, new and dif-
ferent Ah batteries at the same time.
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The number of batteries must meet UPS requirements.