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Chapter 7 UPS Operation

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voltage (per phase). If normal, turn on the UPS Output breaker or switch.

7.2.2 Battery Mode Start-up Procedures (Single)

NOTE :

1. Before executing the following start-up procedures, please refer to 7.1

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2. Battery start function is customized and only applicable to the model that

has the built-in battery contactor.

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2. Press the battery start-up switch once.

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start up.

4. Press the ‘ON¶DQGµ

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inverter will start up, the inverter voltage will be established and the LCD will

display ‘Backup Mode¶

5. Measure the voltage of the UPS Output breaker or switch. If normal, turn on the

UPS Output breaker or switch.

7.2.3 Manual Bypass Mode Start-up Procedures (Single)

NOTE :

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2. Before executing the following procedures, please refer to 7.1 Pre Start-

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The Manual Bypass breaker or switch can only be turned ON for UPS

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be interrupted during maintenance process.

If the Manual Bypass breaker or switch is turned ON in Normal Mode, the inverter

will be turned OFF, the connected critical loads will be power-supplied by the

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AC power is normal.

Delta NT Series User Manual

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