19
Figure 17 Connecting the AC power cord
Connecting the PSR150-D/PSR150-D1 to a –48 VDC power
source
CAUTION:
Identify the positive (+) and negative (-) marks on the two wires to avoid connection mistakes.
To connect the PSR150-D/PSR150-D1 to a –48 VDC power source:
1. Wear an ESD-preventive wrist strap and make sure it makes good skin contact and is well
grounded.
2. Unpack the DC power cord, correctly orient the plug at one end of the cable with the power
receptacle on the power supply, and insert the plug into the power receptacle (see callout 1
in Figure 18).
T
he power receptacle is foolproof. If you cannot insert the plug into the receptacle, re-orient the
plug rather than use excessive force to push it in.
3. Tighten the screws on the plug with a flat-blade screwdriver to secure the plug in the power
receptacle (see callout 2 in Figure 18).
4. Conne
ct the two wires at the other end of the power cord to a –48 VDC power source.
Figure 18 Connecting a –48V DC power cord
NOTE:
You can also connect the PSR150-D/PSR150-D1 to an RPS that provides –48 VDC output. The connection
procedure is the same as described in "Connecting the switch to a –52 to –55 VDC output RPS."
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