•
The resistance between each negative terminal stud and bare metal surface on the power tray must be greater that
10 Mohm.
Typical hand held ohm meters will not measure 10 Mohm; instead they will auto-range to acquire a measurement
and give an out-of-range reading. This is an acceptable reading provided that the meter is in calibration.
Note
Step 3
Use the crimping tool mandated by the lug manufacturer to crimp the lugs to the DC input cables. For details on lugs,
see the
DC Power System, on page 43
.
The cable should be sized according to local and national installation requirements. Use only copper cable.
The power supply terminal block lug width is 0.60 inches (1.50 cm). The terminal posts are centered 0.63 inches
(16 mm) apart and are 1/4-20 thread. We recommend that you use an appropriately sized 90-degree,
industry-standard, dual-hole, standard barrel compression lug.
Note
Step 4
Using the wrench, attach the positive and negative cable pairs to each terminal block on the power tray (PT0). Start with
PM0 (located on the right side) and move left, finishing with PM3 (located on the left side). Use the torque wrench to
tighten to a torque of 45 to 55 in-lb (5.1 to 6.2 N-m).
Make sure that the polarity of the DC input power cabling is correct. This is a negative voltage system.
Caution
This is a positive ground system; make sure to connect the positive lead to the +RTN terminal and the negative
lead to the
–
48V terminal.
Caution
Step 5
Align the DC terminal block cover with the cover latch tab.
Step 6
Slide the terminal block cover upwards to align the screw with the mounting standoff.
Step 7
Use the screwdriver to secure the screw into the mounting standoff and tighten to a torque of 5 to 7 in-lb (0.56 to 0.79
N-m).
Step 8
Repeat these steps for all the power trays.
Powering On and Powering Off the Fabric Card Chassis
This section describes how to power on and power off an AC-powered or DC-powered Cisco NCS 6000 FCC.
Powering On the Fabric Card Chassis
Prerequisites
•
Installing an AC or DC Power Module , on page 46
•
Installing an AC or DC Power Module Slot Cover , on page 52
•
Installing AC Input Power Cords, on page 53
•
Installing DC Input Power Cables , on page 55
Ensure that the FCC is properly grounded (see the
Installing the Fabric Card Chassis Ground Cable, on page
35
section).
If you have a DC power system installed, the wiring at the Battery Distribution Fuse Bay (BDFB) or at the
power plant must be complete.
Cisco Network Convergence System 6000 Fabric Card Chassis Hardware Installation Guide
57
Installing the Power Components
Powering On and Powering Off the Fabric Card Chassis
