Nortel Networks 8010co - Manual (Page 29)

Chapter 1 Overview 29
Installing the Breaker Interface Panel for the Ethernet Routing Switch 8010co Chassis
Figure 10 Power and grounding example
3 2
PS (+)
Lower Shelf
PS (+)
Upper Shelf
PS (-)
Lower Shelf
PS (-)
Upper Shelf
A/B Input Feed
Returns
– 48 VDC
A/B Input Feeds
1 3 2 1 3 2 1 3 2 1 A 2 A 1 B 1 B 2
Power terminal block (BIP)
Return Secondary B
Return Primary B
Return Secondary A
Return Primary A
Gnd PS 1 upper
-DC PS1 Upper
-DC PS2 Upper
-DC PS3 Upper
-DC PS1 Lower
-DC PS2 Lower
-DC PS3 Lower
+DC PS1 Upper
+DC PS2 Upper
+DC PS3 Upper
+DC PS1 Lower
+DC PS2 Lower
+DC PS3 Lower
Gnd PS 2 upper
Gnd PS 3 upper
PS 1
+ DC
– DC
PS 1
+ DC
– DC
PS 2
+ DC
– DC
PS 3 PS 3
+ DC
– DC
PS 1
+ DC
– DC
PS 1
+ DC
– DC
PS 2
+ DC
– DC
PS 3
+ DC
– DC
DC
Gnd PS 1 lower
Gnd PS 2 lower
Gnd PS 3 lower
Gnd BIP
Gnd upper shelf
Gnd lower shelf
Upper shelf
Lower shelf
= Chassis ground
= Earth ground
Chassis
ground stud
Chassis
ground stud
-48 VDC Primary A
-48 VDC Secondary A
-48 VDC Primary B
-48 VDC Secondary B
10760EB
Cable not
supplied
Cable not
supplied
Rack
grounding strip
example
Equipment
rack
PS 3
+ DC
– DC
Legend:
= Redundant equipment