2-24 
Figure2-28 Connecting the power cord for a PSR75-12A/PSR150-A1 power supply (1) 
 
 
Figure2-29 Connecting the power cord for a PSR75-12A/PSR150-A1 power supply (2) 
 
 
Connecting the power cord for a PSR150-D1 power supply 
 
 
  Connect the other ends of the wires for a PSR150-D1 power supply to a –
with the negative wire (– or L–) to the negative terminal (–) and the positive wire (+ or M/N
positive terminal (+). 
  To use an H3C RPS to supply power to the power supply, use a compatible RPS power cord to 
connect the RPS to the power supply. 
  The power cord color code scheme in Figure2-30 is for illustration only. The cable delivered for 
your country or region might use a different color scheme. When you connect the power cord, 
always identify the polarity symbol on its wires. 
 
To connect the power cord for a PSR150-D1 power supply: 
1.  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 Figure2-30. 
If you cannot insert the plug into the receptacle, re-orient the plug rather than use excessive 
force to push it in. 
2.  Tighten the screws on the plug with a flat-blade screwdriver to secure the plug in the power 
receptacle. See callout 2 in Figure2-30. 
3.  Connect the other end of the power cord to a –48 VDC power source or an RPS.