Upsc-D - Siemens HiPath 3000 Service Manual

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Boards for HiPath 3000

Central Boards

UPSC-D

Introduction

The UPSC-D S30122-K5660-M300 board (Figure 3-25) is used in HiPath 3550 and HiPath

3350 (wall housing).

This module supports power supply and battery management functions. No other components

are required if it is operated as an AC power supply. To maintain short-term battery emergency

operation after a power failure, that is, to use uninterruptible power supply functions, you must

also connect a battery pack.

The UPSC-D power supply unit is only released for permanent AC power supply.

Permanent operation at a direct-current system is not allowed.

A DC power supply unit is only connected to bridge an AC power failure (emergency

battery operation).

If a 48-V direct-current system is being used instead of a battery pack for DC power

supply, connection must be performed as for a battery pack. The 48-V direct-current

system must not exceed the limit of 60 V in operating mode, during loading, and

when an error occurs. The direct-current system must not be connected to the

UPSC-D if this cannot be guaranteed.

If the power supplied by the UPSC-D is insufficient, an external

installed to provide additional power. For this, the EPSU2's DC connection needs to be con-

nected to the special -48 VDC input on the UPSC-D. The UPSC-D's internal -48-V output is de-

activated when the external power supply is connected.

Licensed battery pack

S30122-K5928-X (48 V (4 x 12 V)/1.2 Ah battery pack)

This is the only battery pack released for connection to UPSC-D.

Do not use 24-V batteries (S30122-K5403-X) in conjunction with UPSC-D as an ex-

plosive gas (hydrogen + oxygen) escapes when the battery is overloaded.

P31003-H3550-S403-4-7620, 02/05

HiPath 3000 V5.0, HiPath 5000 V5.0, Service Manual

power supply can be

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