16
11.3
Connecting Subrack DC Power Cables
16
The figures below illustrate how to connect the subrack power cables to the subrack and the
PDP850A (3000064).
Instruction
-48 V power cable
0 V power cable
Cross
screwdriver
Flat
screwdriver
M3/M6
Screw/bolt
M4
Make sure that the power control switch for the corresponding subrack on the PDP
is placed in the OFF position before laying the power cables.
Completely insert the cord end terminals into the terminal blocks on the PDP. To ensure good
connection, the metal part exposed should not exceed one sixth of the overall metal length. The
length of the exposed insulation covering or metal part of terminals in the same row or batch
should be equal whenever possible.
Do not press the insulation covering of cord end terminals, which may cause poor electrical
connection.
Make sure the side with a larger area of a cord end terminal contacts the terminal block.
After connecting power cables, attach a label indicating the cable information to both ends of each
cable, 1 cm to 2 cm away from the connector on each end.
Caution
Pow
er
input
int
erf
ace
Connect the cord end
terminals (0 V black) to the
0V_A_1 to 0V_A_4 (active)
or 0V_B_1 to 0V_B_4
(standby) connectors.
M4
3
Connect the cord end terminals
(-48 V blue) to the -48V_A_1 to
-48V_A_4 (active)
or -48V_B_1 to -48V_B_4
(standby) connectors.
1
3
4
6
1
2
5
M6
M3
Instruction
You need to properly bend the power cables before
connecting them to power input interfaces.
Route the power cables along the wiring channel
on the left side of the cabinet, and then horizontally
lead them into the PDP from wiring holes on both
sides of the PDP.
0 V power cable
-48 V power cable
2
