AC power system description 11
Table 6
Common/Peripheral Equipment Pow& Supply
Nl7D14AA
output vOuJput
A
+5.1
V 60A
+8.5
V
2.5
A
+12
l.OA
-12 0.75
A
+15v
10A
-15 v
IOA
-48 V 4.75
A
-150 v
0.13 A
output VIVA Output F
86Vacf5VA
20
Hz
External power distribution and ground connections.-_
The external distribution for AC powered systems is very simple. No
additional equipment is required; simply connect to an AC source of power.
One 208 or 240 volt circuit with 30 amps protection (circuit breaker or fuse)
should be used to feed each pedestal.
Figure 4 shows the important grounding connections and the use of the ACEG
(AC Equipment Ground) or IGB (Insulated Ground Bus). For a general
discussion of the grounding philosophy, see the section “System grounding.”
Figures 5 through 8 for AC distribution in this section are shown for
connection to standard utility power. If an Uninterruptible Power System
(UPS) is used, refer to the later section on AC reserve power.
Power engineering 553-3001-l 52
.
.