Alcatel 7750 SR-12, Installation Manual

Page: 81 / 158

Installing Power Supplies
7750 SR-12
Page 79
Connect the power cables after the DC PEMs, AC power shelves and rectifiers are installed:
Step 1
Prepare the power cables. See Preparing the Power Cable on page 69 .
Step 2
Remove the safety cover from the DC terminal block ( Figure 20 ).
Step 3
Loosen the -VDC and RTN terminal nuts ( Figure 25 ).
Step 4
Using the prepared cable(s), connect the RTN positive/return (+) cable to the (RTN)
terminal according to local safety codes.
Step 5 Replace the nuts and tighten with a torque wrench to 56 pound-inches.
Step 6 Connect the VDC cable to the top (-48V) terminal according to local safety codes.
Step 7 Replace the nuts and tighten with a torque wrench to 56 pound-inches.
Step 8 Replace the safety cover ( Figure 22 ).
Figure 25: DC Terminal Block
Step 9
Plug the other end of the AC input power cables into the AC power source.
Step 10
Check the LEDs on each rectifier.
Step 11
Flip the power switch on each DC PEM to the ON position ( | ).
Step 12
Proceed to the next section for instructions to install the SF/CPM(s). Perform the card slot,
card type, MDA, and port preconfigurations prior to installing the IOMs and MDAs. See
Installing the SF/CPM on page 83 for instructions.
VDC
RTN
OFF
O
ON
I
1
2
SR12019