To ensure safety of personnel and equipment, do not connect any power cables into the power module
until the module is completely installed into the chassis. Statement 389
Warning
To reduce the risk of electric shock, switch on the power only after the power cord is completely
installed into the power module. Statement 390
Warning
Procedure
Step 1
Using a voltmeter, verify the office battery and ground at the following points on the fuse and alarm panel:
a) To verify the power, place the black test lead of the voltmeter to the frame ground. Place the red test lead
on the A-side connection and verify that it is between –40.5 VDC and –72.0 VDC. Place the red test lead
on the B-side connection and verify that it is between –40.5 VDC and –72.0 VDC.
For nominal steady state voltage of –48 VDC, the operating voltage range for the chassis is –40.5
VDC (minimum) to –57.6 VDC (maximum).For nominal steady state voltage of –60 VDC, the
operating voltage range for the chassis is –50.0 VDC (minimum) to –72.0 VDC (maximum).
Note
b) To verify the ground, place the black test lead of the voltmeter to the frame ground. Place the red test lead
on the A-side return ground and verify that no voltage is present. Place the red test lead on the B-side
return ground and verify that no voltage is present.
Step 2
To power up the node, insert the fuse into the fuse position according to site practice. The fuse rating must
not exceed 40 A.
Step 3
Using a voltmeter, verify the NCS 2006 shelf for –48 VDC or –60 VDC battery and ground:
a) To verify the A-side of the shelf, place the black lead of the voltmeter to the frame ground. Place the red
test lead to the –48 V or –60 V (A-side battery connection) red cable. Verify that it reads between –40.5
VDC and –72.0 VDC. Then place the red test lead of the voltmeter to the RET1 (A-side return ground)
black cable and verify that no voltage is present.
For nominal steady state voltage of –48 VDC, the operating voltage range for the chassis is –40.5
VDC (minimum) to –57.6 VDC (maximum).For nominal steady state voltage of –60 VDC, the
operating voltage range for the chassis is –50.0 VDC (minimum) to –72.0 VDC (maximum).
Note
b) To verify the B-side of the shelf, place the black test lead of the voltmeter to the frame ground. Place the
red test lead to the –48 V (B-side battery connection) red cable. Verify that it reads between –40.5 VDC
and –72.0 VDC. Then place the red test lead of the voltmeter to the RET2 (B-side return ground) black
cable and verify that no voltage is present.
If the NCS 2006 shelf is being powered at –60 VDC nominal voltage, the door must be kept
closed during regular operation.
Note
Step 4
Return to your originating procedure (NTP).
Cisco NCS 2000 Series Hardware Installation Guide
219
Connecting Power and Ground
DLP-L22 Turning On and Verifying DC Office Power on the NCS 2006 Shelf
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