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13-28 Cabinet and equipment wiring and cabling
Fan power wiring
Circuit breakers CU A and CU B feed dc power to the fan units. Figure 13-18
details the fan powering diagram for dc power from the BIP.
Figure 13-18
BIP Fan powering wiring diagram
Fan
shelf 1
BIP
P2.1
-48V
CU A
P2.2
BR
P3.2
BR
CU B
P3.1
-48V
Fan
shelf 2
Part of NT7A6980
Battery
12
breaker
panel
11
7
9
(IN)
Fan
AccessNode 323-3001-210 Issue 1.0
NT1W87
P4.1
P4.2
P4.3
BK
W
W
P1.1
1
BK
P1.2
3
R
P1.3
R
BK
P5.1
P5.2
P5.3
SL
SL
Alarm circuit BR CU A (BK)
Alarm circuit BR CU B (BK)
Roof fan fail alarm (BL)
Fan shelf fail alarm (SL)
Fan shelf fail alarm (SL)
NT7A6980/82
W
R
BK
BK
2
BL
Fan group 2
+
-
4
Alm
+
-
Alm
+
-
Alm
+
-
Alm
+
-
Alm
FW-15249
FW-15249
Fan group 1
Alm
-
+
Alm
-
+
Alm
-
+
Alm
-
+
Alm
-
+
Alm
-
+
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