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Electrical Ratings - Power Circuit
Refer to Chapter 3: “Earth Fault Monitoring Systems” for circuit breaker details.
Motor HP ratings as NEC Table 430-247: “Full Load Current in Amperes, DC Motors
The ratings assume that the armature discontinuous current level is at or below the armature average current rating.
Surroundin
g Air
Temp.
Output
Current @
150% and
200% *
(A)
Output Current @ 100%
Continuous *
(A)
Motor HP @
500V dc
(HP)
Internal
Field
Current
supply
(A)
1
Total Losses @
Full Load
(W)
Symm
etrical
Fault
Curren
t rms
(kA)
45
℃
20
20
7.5
5/10
2
57
5
45
℃
20
20
10
5/10
2
57
5
45
℃
35
35
15
5/10
2
57
5
45
℃
35
35
20
5/10
2
117
5
45
℃
45
45
25
5/10
2
132
5
40
℃
75
75
30
5/20
3
234
5
40
℃
75
75
40
5/20
3
234
5
40
℃
110
110
50
5/20
3
354
10
40
℃
110
110
60
5/20
3
354
10
40
℃
165
165
75
5/20
3
519
10
40
℃
165
165
100
5/20
3
519
10
See section 4 for the internal field / external field current setting
* The output current figures are given at 100% Continuous (no overload), and with overloads of 150% for 30 seconds
or 200% for 10 seconds (starting from 65% load stabilized)