Expanding and Upgrading HiPath 3000
P31003-H3550-S403-4-7620, 02/05
9-18 HiPath 3000 V5.0, HiPath 5000 V5.0, Service Manual
exup.fm
Expanding HiPath 3000
9.2.4.5 Expansion Cabinet Rack ECR With Batteries and EPSU2-R
If the internal system power supply unit for HiPath 3500 or HiPath 3300 does not provide
enough power for the overall telephone configuration (corded and cordless telephones), an ad-
ditional power supply is necessary. In this case, the EPSU2-R external power supply unit
should be installed in the ECR.
Figure 9-7 shows the position of the EPSU2-R inside the ECR.
The block diagram below illustrates the cable run between the EPSU2-R and the batteries in-
side the ECR and the power supply unit of the system (UPSC-DR). The connection cable be-
tween the expansion cabinet rack ECR and the system cabinet is also provided.
7
Danger
An expansion cabinet rack (ECR) equipped with an external power supply unit
(EPSU2-R) may only be operated if the housing is closed.
Before opening the housing, disconnect the ECR from the power supply by
● setting the switches for battery voltage and line voltage on the ECR’s front panel
to "Off".
● removing the battery fuse on the ECR front panel and
● unplugging all power and connection cables.
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