10 power limiting, 11 high voltage shutdown (hvsd) – Alpha Technologies AMP24 HP User Manual

Page 69

Doc. #: 0260011-J0 Rev B

6.4.10 Power Limiting

Each rectifier module is designed to limit the power output to the module specification. This enables

more current to be supplied at lower output voltages, and allows matching the output power to the

demands of constant-power loads often seen in telecom equipment.

This feature may also be used for a faster recharge of flooded batteries paralleled with the load.

The current limiting feature overrides the power-limiting feature.

NOTE:

6.4.11 High Voltage Shutdown (HVSD)

This feature protects the load from over-voltages originating in the rectifiers. The offending rectifier

module is shut down when a high output voltage condition occurs. The red Alarm (Module Fail) LED

illuminates. The module restarts automatically; however, if more than three over-voltage conditions occur

within one minute, the module will latch off and remain shut down until it is reset by restarting the rectifier

via the CXC.