APC SYCFXR9, PDUM160H-B, SY160K160H manual Operation Modes

Operation

Operation Modes

In an installation without a maintenance bypass panel, the UPS has four different operation modes. If the installation includes a PDU-XR or an external maintenance bypass panel, wrap-around maintenance bypass mode will also be available.

Normal operation

During normal operation, the UPS converts mains/utility power to conditioned power for the connected loads.

Battery operation

During battery operation, the UPS provides power to the connected loads from its external batteries for a finite period. The UPS transfers to battery operation if the supply of mains/utility power fails, or is outside pre-defined limits.

Bypass operation

Bypass is a feature that keeps the load supplied with mains/utility power during maintenance of the UPS power sections. In bypass, mains/utility power is sent directly to the connected load bypassing all internal UPS functions and filters. Battery back up is not available in bypass operation.

Wrap-around maintenance bypass (optional)

The UPS can be connected to a PDU-XR or an optional external maintenance bypass panel. When activated, this panel bypasses the UPS, feeding mains/utility power directly to the load. An activated wrap-around maintenance bypass panel completely isolates the UPS and allows maintenance to be performed - including a replacement of the entire UPS.

990-3015-001 Symmetra PX 160 kW 400 V Operation 7