HP PSR750-A Manuale utente

HP PSR750-A Power Supply

User Guide

Part number: 5998-1606

Document version: 5PW100-20110311

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Contents

Introduction to the power supply····························································1

Introduction ·························································································1

Specifications······················································································3

Panel····································································································4

Status LEDs ··························································································4

Installing and removing the power supply ············································6

Precautions··························································································6

Tools ····································································································7

Installing and removing the power supply·······································7

Installing the power supply ··························································7

Removing the power supply·························································9

Connecting the power cord···························································· 10

Introduction to the power supply

Introduction

The PSR750-A (JC089A) is an AC-input and DC-output power supply. It

can convert the input voltage to 12 V and –54 V as required, and its

maximum output power is 750 W.

Table 1 Features supported by the PSR750-A

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

supplies, implementing 1+1 redundant current

sharing.

Hot swapping

When the device works properly, you can

power off a power supply of the 1+1

redundant power supply system and remove it

from the device.

Auto-recovery support of the PSR 750-A in the protection status is shown

in Table 2.

Table 2 Protection functions of the PSR 750-A

Protection function Status Auto-recovery

support

Over-voltage

protection

No power supply

with the power

supply deadly

locked

Not supported

Short-circuit

protection No power supply Supported

Current-limiting

protection No power supply Supported

Overheat protection No power supply Supported

NOTE:

•In case of short-circuit protection, over-current protection, or

overheat protection, the power supply recovers itself after the

issue is addressed.

•When a power supply is deadly locked due to over-voltage

protection, it does not support the auto-recovery function. In this

case, power off the power supply, disconnect the power cord and

connect it again, and then power on the power supply. After all

these operations, the power supply gets restored.

Specifications

Table 3 PSR750-A specifications

Item Specifications

Rated voltage range 100 VAC to 240 VAC; 50 Hz or

60 Hz

Max voltage range 90 VAC to 264 VAC; 47 Hz or

63 Hz

Output voltage (dual output) 12 V and –54 V

Max output current •25 A for 12 V output voltage

•9 A for –54 V output voltage

Max output power 750 W

Dimensions (H × W × D) 40.5 × 180.6 × 235 mm (1.59 ×

7.11 × 9.25 in)

Operating temperature 0°C to 55°C (32°F to 131°F)

Storage temperature –40°C to +70°C (–40°F to

+158°F)

Operating humidity 10% to 95%

Storage humidity 5% to 95%

Panel

Figure 1 Panel of the PSR750-A

1 2 3 4

(1) Power switch (push “O” to switch off and push “—” to switch on)

(2) AC receptacle (3) Tab

(4) Power supply handle (5) Status LED for DC output

(6) Status LED for AC input (7) Captive screw

Status LEDs

The PSR750-A has two LEDs, which indicate the input status (AC OK)

and output status (DC OK) of the power supply. Table 4 describes the

colors and working status of the LEDs in different cases.

Table 4 Description of the LEDs

LED Color Status

Off No power is input or an input

failure occurs.

AC OK

On The power input is normal.

Off No power is output or an output

failure occurs.

DC OK

On The power output is normal.

In normal cases, the input LED of the PSR750-A power supply turns on

while the output LED is still off after you connect the power cord but

leave the power supply in the off state; the input and output LEDs both

turn on after you power on and switch on the power supply.

However, if the input LED is on but the output LED is off, this case may be

caused by output short-circuit, output over-current, output over-voltage,

or over-temperature. To solve such cases, take the following actions:

1. Switch off the power supply and disconnect the power cord, and

then reconnect the power cord and switch on the power supply to

check whether the power supply can work properly.

2. If the above action does not work, the case may be caused by

over-temperature. Take actions to cool down the power supply,

and then it can work properly.

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