Table I. Electrical ratings. - Continued.
Secondary
Secondary dc
Turns ratio
Impedance
Power in watts
resistance
primary:secondary
Circuit
Primary
Primary
Primary
(ohms)
(ohms)
diagram
Dash
unbalanced
dc
impedance
configu-
Series
Parallel
1 kHz
300 Hz
50 Hz
Series
Parallel
Secondary
Secondary
no.
dc current
resistance
(ohms)
ration
connec-
connec-
and
and
and
connec-
connec-
series
parallel
(mA)
(ohms)
tion
tion
higher
higher
higher
tion
tion
connection
connection
.33
.33
.03
121
30,000 ct
1200 ct
300
.6
2400
132
33
5:1
10:1
A
.33
.33
.03
122
30,000 ct
500 ct
125
.6
2400
55
13.8
7.7:1
15.5:1
"
.33
.33
.03
123
30,000 ct
200 ct
50
.6
2400
22
5.5
12.2:1
24.5:1
"
.33
.33
.03
124
30,000 ct
5000 ct
1250
.6
2400
550
137.5
2.45:1
4.9:1
"
.33
.33
.03
125
30,000 ct
10,000 ct
2500
.6
2400
1100
275
1.73:1
3.46:1
"
.33
.33
.03
126
30,000 ct
30,000 ct
---
.6
2400
3300
---
1:1
---
B 2/
.25
.25
.03
A
127
40,000 ct
400 ct
100
.5
3200
44
11
10:1
20:1
.25
.25
.03
"
128
40,000 ct
2000 ct
500
.5
3200
220
55
4.47:1
8.94:1
.25
.25
.03
"
129
40,000 ct
4000 ct
1000
.5
3200
440
110
3.16:1
6.32:1
.25
.25
.03
"
130
40,000 ct
20,000 ct
5000
.5
3200
2200
550
1.41:1
2.83:1
.25
.25
.03
131
40,000 ct
40,000 ct
---
.5
3200
4400
---
1:1
---
B 2/
.2
.2
.03
A
50,000 ct
132
200 ct
50
.4
4000
22
5.5
15.8:1
31.6:1
.2
.2
.03
"
50,000 ct
133
500 ct
125
.4
4000
55
13.8
10:1
20:1
.2
.2
.03
"
134
50,000 ct
600 ct
150
.4
4000
66
16.5
9.13:1
18.26:1
.2
.2
.03
"
135
50,000 ct
50,000 ct
12,500
.4
4000
5500
1380
1:1
2:1
.16
.16
.03
136
60,000 ct
15,000 ct
3750
.4
4800
1650
413
2:1
4:1
"
.16
.16
.03
137
62,500 ct
50 ct
12.5
.4
5000
5.5
1.38
35.4:1
70.7:1
"
.12
.12
.03
138
80,000 ct
15,000 ct
3750
.3
6400
1650
413
2.3:1
4.6:1
"
.11
.11
.03
139
90,000 ct
10,000 ct
2500
.3
7200
1100
275
3:1
6:1
"
.1
.1
.03
140
95,000 ct
15,000 ct
3750
.3
7600
1650
413
2.5:1
5:1
"
.1
.1
.03
141
100,000 ct
60 ct
15
.3
8000
6.6
1.65
40.8:1
81.6:1
"
.1
.1
.03
142
100,000 ct
100 ct
25
.3
8000
11
2.75
31.6:1
63.2:1
"
.1
.1
.03
143
100,000 ct
125
500 ct
.3
8000
55
13.8
14.1:1
28.3:1
"
.1
.1
.03
144
100,000 ct
250
1000 ct
.3
8000
110
27.5
10:1
20:1
"
.1
.1
.03
145
100,000 ct
500
2000 ct
.3
8000
220
55
7.07:1
14.14:1
"
.03
146
.3
8000
1100
275
3.16:1
6.32:1
"
10,000 ct
2500
.1
.1
100,000 ct
.03
147
.2
10,800
9
2.25
40.6:1
81.2:1
"
82 ct
.07
.07
20.5
135,000 ct
.
1/ Qualification testing and approval to M27/359-131 and M27/359-147 shall be sufficient to grant approval to M27/359-001 through M27/359-147.
2/ Includes electrostatic shield. Shield terminal shall be 4. Voltage ratio shall be 2 to 1 at 20 kHz.
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