Operation

10.3UPS Battery Start

The battery start option permits starting the Liebert® APM™ with power supplied only by the batteries (at charged condition).

! CAUTION

Before attempting to start the UPS without utility power present, ensure that the batteries are fully charged—over 2.1V per cell—and will supply adequate run time to the load.

1.Verify that the battery cabinet is properly connected (see Figure 24) and that the battery breaker is closed.

2.Press the battery start button on the front panel of any Liebert FlexPower assembly for two seconds (see Figure 63 for the button’s location).

The LCD displays the start screen, and the battery indicator flashes green. It stops flashing and becomes solid green about 30 seconds after the rectifiers enter normal operation.

3.Press and hold the INVERTER ON key for two seconds, and the UPS will begin operating in battery mode.

Figure 63 Battery start button location

Battery Start Button on Right Side of the Liebert FlexPower assembly

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Emerson 15-90KVA, 115-120, 115-208, 115-50/60HZ, 115-600V, 115-480 user manual UPS Battery Start, Battery start button location
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115-600V, 115-208, 115-120, 115-50/60HZ, 115-480 specifications

The Emerson 15-90KVA series is a robust and versatile power solution designed for various applications including commercial, industrial, and data center operations. Operating at voltage ranging from 115 to 480 volts, and supporting frequencies of either 50 or 60 Hz, this series is engineered to meet diverse power requirements.

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