Table of Contents
Advertisement
C
ONNECTING TO A
This switch supports both AC and DC power conversion modules.
C
DC P
ONNECTING
When a -48 VDC power conversion module is installed in the switch, an external
DC power supply must be connected to the DC power connection on the left side
of the front panel.
C
AUTION
ensure that power to the feed lines is turned off at the supply circuit
breaker or disconnected from the power bus.
To provide adequate circuit protection between the DC power
N
:
OTE
supply and the switch, all intermediate wiring and circuitry should be
rated to carry a load at least two times the maximum rating for this
switch.
The wiring between the DC power supply and the switch must be
N
:
OTE
stranded copper wire within the range of 10 to 24 AWG.
Wiring for the power input terminals on the switch are described
N
:
OTE
below. Wiring of the DC power supply terminals depends on the
equipment in use on the local site, but should be wired in such a way as
to meet the input requirements shown in
wiring should also be color coded according to local standards to ensure
that the input power and ground lines can be easily distinguished.
When using two power conversion modules with the switch,
N
:
OTE
either AC or DC modules can be used – both AC, both DC, or one AC
and one DC.
To connect the switch to a power source:
First verify that the external DC power supply can provide -36 to -72 VDC,
1.
4 A minimum for the -48 VDC power conversion
Prepare two wires for each power source to be used (A or B). Use 10 to 24
2.
AWG stranded copper wire. Make sure these wires are not plugged into the
power source.
P
OWER
OWER
Before wiring the DC plug or connecting power to the switch,
:
C
HAPTER
S
OURCE
Figure 11 on page
– 41 –
| Installing the Switch
2
Connecting to a Power Source
42. The
module.
Advertisement
Table of Contents
