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BTI7800 Series Hardware Overview and Installation Guide
External Feeds
A1
B1
A2
B2
42
Each DC PEM features two dual-stud return terminals and two dual-stud feed terminals.
Typically, only one dual-stud terminal is used. The extra dual-stud terminals can be used
for particular applications, such as laboratory applications.
Figure 8: BTI7814 14-Slot Chassis DC Power Entry Module
The DC PEMs are located on the rear of the chassis. The slots are numbered
(from right to left).
PEM 4
PEM 1
PEM 4
power the other set of six channels. For details on the power distribution plan, see
"BTI7814 Power Distribution Plan" on page
There is a direct correlation between the DC PEM slots and the internal shelf input
terminals.
The external
A
feed pair consists of two individual feeds,
the external input terminals of
supply power to the
and
A1
Similarly, the external
B
feed pair consists of two individual feeds,
connect to the external input terminals of
and
PEM 4
supply power to the
This is shown in the following table along with the external breaker requirements for each
individual feed:
DC PEM Slots
PEM 1
PEM 2
PEM 3
PEM 4
and
power one set of six channels, and
PEM 2
40.
and
. The DC outputs of
PEM 1
PEM 3
internal shelf input terminals respectively.
A2
and
PEM 2
PEM 4
B1
and
B2
internal shelf input terminals respectively.
Internal Shelf Input
Terminals
A1
B1
A2
B2
through
PEM 1
PEM 3
A1
and
A2
, which connect to
and
PEM 1
PEM 3
B1
and
B2
, which
. The DC outputs of
PEM 2
External Breaker
Requirements
125A
125A
125A
125A
Copyright © 2019, Juniper Networks, Inc.
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