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Power Specifications
Some units in System/38 must be supplied with
standard three-phase power; other units need
single-phase power. The power requirements for each
unit are specified in the Electrical Specifications Chart.
Available nominal voltages are shown on the
specifications pages. When a unit is ordered, the order
specifies the nominal voltage of the power source to
which the unit will be connected. The unit can be
changed in the field so that it will operate at a different
nominal voltage.
Measure voltage on each unit at its receptacle. A
transient-voltage condition must not exceed +15% or
-18 % of the specified nominal voltage, and must return
to the specified range within one-half second.
Voltage limits are shown in Figure 5-1. The Electrical
Specifications Chart specifies typical plugs, connectors,
and receptacles. (50 Hz machines are usually shipped
without plugs.)
5-2
Line frequency must be maintained within :!:1 /2 Hz
(cycles per second).
The maximum harmonic content of the power system
voltage wave forms on the equipment feeder lines must
not exceed :!:5 % when the equipment is not operating.
Nominal
80 Hz
50 Hz
Voltage
Minimum
Maximum Minimum
Maximum
100
90
110
90
110
110
96.5
119
96.5
119
120 (115)
104
127
-
-
127
111
137
-
-
200
180
220
180
200
208
187
220
-
-
220
-
-
198
238
230 (240)
208
253
-
-
235
-
-
212
258
(230/240)
380
-
-
342
410
408
-
-
367
448
(400/415)
Figure 1-1. Voltage Limits
J
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