EnerSys Alpha Cordex HP 3.0kW, Техническое руководство

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13 0100037-J0 Rev C
4.1.10 Current Limit/Short Circuit Protection
The current limit function determines the maximum output current limit of the rectifier module, regardless of the
output voltage or power. The maximum output current is limited to a constant value down to a short circuit condi-
tion. Current limiting can be used to mate the rectifier output current ampacity to the needs of the load and parallel
battery to minimize excessive battery recharge currents.
The rectifier will sustain a continuous short circuit at the output terminals. The maximum short circuit current will not
exceed 62.5A per module.
4.1.11 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 can also be used for a faster recharge of flooded batteries paralleled with the load.
4.1.12 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 will illuminate. The module will
restart 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.
4.1.13 Battery Eliminator Operation
Rectifier modules maintain all specifications (except where indicated) with or without a battery or a DC source at-
tached in parallel to the output. Under these conditions there will be no monitoring or control activity if AC power
failure occurs.
4.1.14 Mechanical
An integral handle provides a means to both insert and remove the rectifier as well as locking the rectifier in place.
4.1.15 Firmware Update
The rectifier module should have its operating firmware updated through the CXC HP Controller. Using the latest
firmware will ensure the controller has the latest features and that all corrections have been applied.
NOTE:
The current limiting feature overrides the power-limiting feature.
Figure 4 — Locking Handle Disengaged/Engaged
NOTE:
The 3.0kW rectifier requires AC input power to be connected to perform the firmware
update.