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Customer Own Batt. Pack – Others
You may use another type of batteries, for example, ternary lithium battery, lithium iron
phosphate battery, etc. If you are not sure about the battery type and whether the batteries
are applicable to the UPS, please contact Delta service personnel.
1. Appropriate battery voltage range
144 ~ 312 Vdc
2. Appropriate float charging voltage
150 ~ 310 Vdc
3. Appropriate EOD voltage
114 ~ 242 Vdc
8.5.2.3 Precautions for External Battery Pack
1. When connecting the UPS to an external battery pack mentioned above or any other battery
pack with a management system, please beware of the insulation resistance between the
positive terminal (+)/ negative terminal (-) and the PE chassis. Note that low insulation
resistance or low impedance circuit owing to insulation breakdown will lead to operation errors
or abnormalities of the UPS. The battery circuit’s insulation resistance to ground should exceed
2 MΩ. If there is no such specification for reference, we recommend conducting a high voltage
insulation test between the positive terminal (+)/ negative terminal (-) and the PE chassis of
the entire battery system with a hipot tester.
Test condition: 2820 Vdc/60s. Acceptance condition: < 1 mA.
2. Before changing the battery settings, please transfer to bypass mode and remove the battery
connection (both power and signal cables) first. Wait until your see ‘Battery Disconnected’
shown on the LCD before you change the battery settings. After that, connect the batteries
(both power and signal cables) and turn on the UPS inverter.
3. For lead-acid batteries, the UPS will switch between boost charging mode and float charging
mode automatically. For other batteries, only float charging mode is available.
4. Common battery is applicable to parallel UPSs, however, not applicable to parallel UPSs
connecting to lithium-ion batteries.
5. To use a ground detection voltmeter with the UPS, please contact Delta service personnel.
WARNING:
Some ground detection voltmeters can impact the UPS operation or even damage it.
6. For the Delta lithium-ion battery pack, no need to set up the parameters.
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