MIL-HDBK-1004/5
Table A-1 (Continued)
Feeder-Cable Length Versus Loads (1)
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Cable Length
Bus 3
Number of
No-Load
Feet
Per-Unit volts (2)
Unit Loads (3)
Volts 1-n (4)
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0.9585
Five
115
0.9502
Six
114
0.942
Seven
113
10,000
0.9945
One
119.3
0.9890
Two
118.7
0.9835
Three
118.0
0.9780
Four
117.4
0.9725
Five
116.7
0.9670
Six
116.0
0.9610
Seven
115.3
0.9560
Eight
114.7
0.9505
Nine
114.0
0.9450
Ten
113.4
5,000
0.9973
One
119.6
0.9919
Three
119.0
0.9865
Five
118.4
0.9811
Seven
117.7
0.9757
Nine
117.1
0.9703
Eleven
116.4
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(1)
Voltage regulated on the high-voltage side (4,160 volts) of the frequency
conversion assembly. This eliminates the 0.0049 voltage drop on bus 1.
(2)
The utilization service assembly transformer's per-unit low-voltage base
is 208/120 volts.
(3)
The 100-ampere, 0.8-power-factor unit load is assumed at the load side
of the line drop compensator.
(4)
Voltage does not include service cable or aircraft cable effects on
voltage drop.
(5)
The underlined rows denote the maximum number of 100-ampere, 0.8-power-
factor unit loads (one on each utilization service assembly) on the
feeder cable to maintain 112-volts minimum at utilization service
assemblies. Adjustment may be required to also maintain 113 volts
minimum at the aircraft interface point.
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