TABLE I. Electrical ratings Continued. 1/
Secondary dc
Secondary
Turns ratio
resistance
Power
impedance
Dash
Primary
Primary
Primary dc
Circuit
primary:secondary
(ohms)
(watts)
(ohms)
no.
impedance
unbal-
resistance
diagram
(ohms)
anced
(ohms)
configur-
1 kHz
400
150
Series
Parallel
Series
Parallel
Secondary
Secondary
dc
ation
and
Hz
Hz
connec-
connec-
connec-
connec-
series
parallel
current
higher
And
And
tion
tion
tion
tion
connection
connection
(mA)
higher
higher
071
2500 ct
2500 ct
625
1.0
.75
.11
2.0
245
268
68
1:1
2:1
A
072
3000 ct
3000 ct
750
1.0
.75
.11
1.8
267
295
74
1:1
2:1
"
073
3000 ct
3000 ct
---
1.0
.75
.11
1.8
267
368
---
1:1
---
B 2/
074
3600 ct
3600 ct
900
1.0
.75
.11
1.5
300
413
103
1:1
2:1
A
075
4000 ct
16 ct
4
1.0
.75
.11
1.5
395
2.5
.65
15.8:1
31.8:1
"
076
4000 ct
500 ct
150
1.0
.75
.11
1.5
395
66
17
2.58:1
5.16:1
"
077
4000 ct
1000 ct
250
1.0
.75
.11
1.5
395
108
27
2:1
4:1
"
078
4000 ct
8000 ct
---
1.0
.75
.11
1.5
390
955
---
1:1.41
---
B 2/
079
5000 ct
500 ct
125
1.0
.75
.11
1.3
450
62
16
3.16:1
6.32:1
A
080
5000 ct
5000 ct
1250
1.0
.75
.11
1.3
450
620
155
1:1
2:1
"
081
7500 ct
50 ct
12.5
1.0
.75
.11
1.0
670
6
1.5
12.25:1
24.5:1
"
082
7500 ct
100 ct
25
1.0
.75
.11
1.0
670
11
2.0
8.66:1
17.32:1
"
083
7500 ct
600 ct
150
1.0
.75
.11
1.0
670
66
16.5
3.54:1
7.07:1
"
084
7500 ct
2500 ct
625
1.0
.75
.11
1.0
670
268
67
1.73:1
3.46:1
"
085
7500 ct
7500 ct
---
1.0
75
.11
1.0
670
925
---
1:1
---
B 2/
086
8000 ct
12.8 ct
3.2
1.0
.75
.11
1.0
765
1.75
.44
25:1
50:1
A
087
8000 ct
1000 ct
250
1.0
.75
.11
1.0
695
106
26.5
2.83:1
5.66:1
A
088
8000 ct
1200 ct
---
1.0
.75
.11
1.0
715
153
---
2.58:1
---
B 2/
089
9000 ct
9000 ct
---
1.0
.75
.11
1.0
925
1020
---
1:1
---
B 2/
090
10,000 ct
12.8 ct
3.2
1.0
.75
.11
1.0
768
1.6
.4
28:1
56:1
A
"
50:1
4
1.0
091
.16 ct
.75
25:1
10,000 ct
.11
.43
1.0
1.7
756
"
20:1
25
1.0
10:1
092
100 ct
.75
2.5
10,000 ct
.11
1.0
10
780
"
14.14:1
50
1.0
7.07:1
093
200 ct
.75
10,000 ct
.11
6
1.0
24
780
"
8.94:1
125
4.47:1
500 ct
1.0
094
10,000 ct
.75
15
.11
60
1.0
780
8.16:1
"
4.08:1
600 ct
150
10,000 ct
1.0
21
095
.75
83
.11
780
1.0
3.16:1
1.0
.11
27
6.32:1
10,000 ct
.75
1.0
"
096
1000 ct
250
780
106
36
2.89:1
1.0
.75
.11
5.77:1
097
10,000 ct
300
1.0
145
"
1200 ct
780
40
.75
2.58:1
098
375
1.0
.11
160
5.16:1
10,000 ct
1.0
"
1500 ct
780
.75
75
2.24:1
099
500
.11
300
4.47:1
10,000 ct
1.0
1.0
"
2000 ct
780
153
1250
.75
610
1.41:1
100
1.0
.11
2.83:1
10,000 ct
5000 ct
1.0
780
"
101
10,000 ct
7500 ct
1875
1.0
.75
.11
1.0
780
932
233
1.16:1
2.31:1
"
102
10,000 ct
10,00 ct
2500
1.0
.75
.11
1.0
780
1075
269
1:1
2:1
"
103
10,000 ct
10,00 ct
---
1.0
.75
.11
1.0
715
985
---
1:1
---
B 2/
100
1165
52
13
6.12:1
12.25:1
A
104
15,000 ct
400 ct
.66
.66
.11
0.8
105
15,000 ct
5000 ct
125
.66
.66
.11
0.8
1165
60
15
5.48:1
10.95:1
A
See notes at end of table.