H3C PSR750-A, Manual

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1
Introduction to the Power Module
Introduction
The PSR750-A is an AC-input and DC-output power module. It can convert the input voltage to 12 V
and –54 V as required, and its maximum output power is 750 W. The PSR750-D is a DC-input and
DC-output power module. It can convert the input voltage to 12 V and –52 V as required, and its
maximum output power is 1800 W.
Table 1-1 Features supported by the PSR750-A/PSR750-D
Feature Description
Protection
Output over-voltage protection, output short-circuit protection, output
current-limiting protection, and overheat protection.
Redundancy
Supports parallel connection of two power modules, thus implementing 1+1
redundant current sharing.
Hot swapping
When the device works normally, you can power off a power module of the 1+1
redundant power supply system and remove it from the device.
Auto-recovery support of the PSR 750-A/PSR750-D in the protection status is shown in Table 1-2 .
Table 1-2 Protection functions of the PSR 750-A/PSR750-D
Model Protection function Status
Auto-recovery
support
PSR 750-A Over-voltage protection
No power supply with
the power module
deadly locked
Not supported
PSR 750-A and
PSR750-D
Short-circuit protection No power supply Supported
PSR 750-A and
PSR750-D
Current-limiting protection No power supply Supported
PSR 750-A and
PSR750-D
Overheat protection No power supply Supported
PSR750-D
Wrong input polarity
protection
No power supply Supported