400 Hz Transformers

E Series

  • Category Power Transformer
  • Type Encapsulated, High Temperature, High Altitude
  • Power Type Single Phase, 400 Hz
E Series Introduction

Built to meet the specification of MIL-PRF-27, long life and reliability are major features of these encapsulated, ruggedly built power transformers. Encased in epoxy fiberglass and capable of operation at high temperatures, these units have a wide variety of uses in airborne, space, and missile applications (as well as industrial) where small size and dependability are prime factors. They can be mounted side by side or stacked as space requires.

 

Send us your special requirements.

Key Features

  • Military Designation TF5S03ZZ
  • Encapsulated, Rugged MIL-PRF-27
  • Capable of operation at high temperatures
  • For Airborne, Missile and Space Applications

Specifications

  • AC INPUT (VAC)
    115 Vac, 1 Phase
  • AC INPUT (HZ)
    400Hz ± 20 Hz
  • EFFICIENCY
    Ranges from 68%-96% Typical
  • LOAD REGULATION
    Size A 12% or less No Load to Full Load
    Sizes B-F 10% or less No Load to Full Load
  • SECONDARY VOLTAGE TOLERANCE
    Within 5% when Measured at Full Load and 115 VAC Input
  • DIELECTRIC WITHSTANDING VOLTAGE
    2500 VDC-Primary to Secondary/ Primary-Secondary to Case
  • STANDARD POWER LEVELS (VA)
    2, 6, 15, 24, 80, 175
    Additional Power Levels Available upon Request
  • STANDARD OUTPUTS
    Size A, 5 to 138 Vac (See Output Volts (Full Load) Chart)
    Size B-F, 5 to 486 Vac (See Output Volts (Full Load) Chart)
    Additional Outputs Available upon Request
  • OPERATING TEMPERATURE RANGE
    Maximum Operating Ambient Temperature 85° C.
  • CONSTRUCTION
    To MIL-PRF-27, Grade 5 Class S
  • MATERIALS/FINISHES
    Fiberglass Case
  • MOUNTING DETAILS
    Thru Hole Mounting
  • ENVIRONMENT
    Encapsulated to meet MIL-STD-810 and MIL-STD-202 for Vibration, Shock, Sand, dust, Humidity, Salt-Spray, Fungus, Sunshine, Rain, Explosion, and Altitude to a Vacuum (Note: For High Altitude Operation, Encapsulate Terminals)

Dimensions

Size G H J K L M N Model Type Weight Lbs. (Max) Primary DCR Ohms (Typ.)
A
B
C
D
0.87
1.25
1.43
1.47
.74
1.19
1.24
1.28
0.78
0.88
1.27
1.40
0.55
0.94
0.99
1.03
0.68
1.00
1.18
1.22
0.19
0.25
0.25
0.25
0.19


2E
6E
15E
24E
0.06
0.15
0.28
0.32
201.0
61.0
14.0
12.0
E
E2
F
F2
2.31
2.31
2.75
2.75
1.52
1.52
2.71
2.71
1.75
1.75
2.31
2.31
1.02
1.02
2.21
2.21
1.81
1.81
2.25
2.25
0.50
0.50
0.75
0.75

0.75

1.00
80E


175E

0.80


2.2

2.0


0.7

Dimension Tolerance: M, N = ± .031, .xx = ± .015; .xxx = ± .005.
Note: Dimensions G and H measured at top of transformer.

 

 

Mechanical Drawings

Circuit Diagram

Standard Model List

Output Volts (FL) Output Current (Amp) Size Secondary DCR Ohms (Typical) Model Number QPL Model Number
5.0 0.400
1.200
3.000
4.800
16.000
35.000
A
B
C
D
E2
F2
0.60
0.173
0.046
0.040
0.009
0.012
2E5CT
6E5CT
15E5CT
24E5CT
80E5CT
175E5CT
M27/338-01
M27/339-01
M27/340-01
M27/341-01
M27/342-01
M27/343-01
6.3 0.317
0.950
2.380
3.800
12.800
27.800
A
B
C
D
E2
F2
1.06
0.24
0.088
0.107
0.016
0.019
2E6.3CT
6E6.3CT
15E6.3CT
24E6.3CT
80E6.3CT
175E5CT
M27/338-02
M27/339-02
M27/340-02
M27/341-02
M27/342-02
M27/343-02
8.0 0.250
0.750
1.880
3.000
10.000
22.000
A
B
C
D
E2
F2
1.63
0.396
0.135
0.140
0.017
0.010
2E8CT
6E8CT
15E8CT
24E8CT
80E8CT
175E8CT
M27/338-03
M27/339-03
M27/340-03
M27/341-03
M27/342-03
M27/343-03
10.0 0.200
0.600
1.500
2.400
8.000
17.500
A
B
C
D
E
F2
2.50
0.587
0.27
0.180
0.03
0.020
2E10CT
6E10CT
15E10CT
24E10CT
80E10CT
175E10CT
M27/338-04
M27/339-04
M27/340-04
M27/341-04
M27/342-04
M27/343-04
12.6 0.158
0.475
1.180
1.900
6.350
13.900
A
B
C
D
E
F2
4.10
0.99
0.32
0.225
0.03
0.021
2E12.6CT
6E12.6CT
15E12.6CT
24E12.6CT
80E12.6CT
175E12.6CT
M27/338-05
M27/339-05
M27/340-05
M27/341-05
M27/342-05
M27/343-05
14.0 0.142
0.428
1.070
1.720
5.600
12.500
A
B
C
D
E
F2
5.59
1.11
0.35
0.32
0.04
0.022
2E14CT
6E14CT
15E14CT
24E14CT
80E14CT
175E14CT
M27/338-06
M27/339-06
M27/340-06
M27/341-06
M27/342-06
M27/343-06
16.0 0.125
0.375
0.940
1.500
5.000
10.900
A
B
C
D
E
F2
6.63
1.58
0.54
0.35
0.05
0.025
2E16CT
6E16CT
15E16CT
24E16CT
80E16CT
175E16CT
M27/338-07
M27/339-07
M27/340-07
M27/341-07
M27/342-07
M27/343-07
18.0 0.111
0.333
0.832
1.330
4.450
9.700
A
B
C
D
E
F
9.00
2.21
0.74
0.40
0.08
0.027
2E18CT
6E18CT
15E18CT
24E18CT
80E18CT
175E18CT
M27/338-08
M27/339-08
M27/340-08
M27/341-08
M27/342-08
M27/343-08
20.0 0.100
0.300
0.750
1.200
4.000
8.730
A
B
C
D
E
F
10.90
2.78
1.40
0.48
0.09
0.020
2E20CT
6E20CT
15E20CT
24E20CT
80E20CT
175E20CT
M27/338-09
M27/339-09
M27/340-09
M27/341-09
M27/342-09
M27/343-09
22.0 0.091
0.273
0.680
1.090
3.630
7.900
A
B
C
D
E
F
14.60
2.80
0.92
0.63
0.12
0.020
2E22CT
6E22CT
15E22CT
24E22CT
80E22CT
175E22CT
M27/338-10
M27/339-10
M27/340-10
M27/341-10
M27/342-10
M27/343-10
25.0 0.080
0.240
0.600
0.960
3.200
7.000
A
B
C
D
E
F
20.40
3.60
1.30
0.68
0.13
0.042
2E25CT
6E25CT
15E25CT
24E25CT
80E25CT
175E25CT
M27/338-11
M27/339-11
M27/340-11
M27/341-11
M27/342-11
M27/343-11
26.0 0.077
0.231
0.577
0.923
3.08
6.73
A
B
C
D
E
F
21.22
3.74
1.35
0.71
0.14
0.044
2E26CT
6E26CT
15E26CT
24E26CT
80E26CT
175E26CT
M27/338-27
M27/339-31
M27/340-31
M27/341-31
M27/342-31
M27/343-31
28.0 0.071
0.214
0.535
0.855
28.50
6.250
A
B
C
D
E
F
30.00
4.20
1.83
0.98
0.14
0.043
2E28CT
6E28CT
15E28CT
24E28CT
80E28CT
175E28CT
M27/338-12
M27/339-12
M27/340-12
M27/341-12
M27/342-12
M27/343-12
31.0 0.064
0.192
0.485
0.772
2.470
5.650
A
B
C
D
E
F
25.60
5.71
1.62
1.27
0.18
0.061
2E31CT
6E31CT
15E31CT
24E31CT
80E31CT
175E31CT
M27/338-13
M27/339-13
M27/340-13
M27/341-13
M27/342-13
M27/343-13
35.0 0.057
0.171
0.428
0.685
2.280
5.000
A
B
C
D
E
F
29.50
6.89
2.28
1.70
0.28
0.098
2E35CT
6E35CT
15E35CT
24E35CT
80E35CT
175E35CT
M27/338-14
M27/339-14
M27/340-14
M27/341-14
M27/342-14
M27/343-14
39.0 0.051
0.154
0.384
0.615
2.050
4.480
A
B
C
D
E
F
38.60
9.39
2.54
2.20
0.32
0.110
2E39CT
6E39CT
15E39CT
24E39CT
80E39CT
175E39CT
M27/338-15
M27/339-15
M27/340-15
M27/341-15
M27/342-15
M27/343-15
43.0 0.046
0.139
0.348
0.556
1.860
4.060
A
B
C
D
E
F
44.30
10.25
2.85
2.42
0.35
0.114
2E43CT
6E43CT
15E43CT
24E43CT
80E43CT
175E43CT
M27/338-16
M27/339-16
M27/340-16
M27/341-16
M27/342-16
M27/343-16
48.0 0.041
0.125
0.312
0.500
1.660
3.650
A
B
C
D
E
F
57.00
15.30
4.05
3.27
0.40
0.160
2E48CT
6E48CT
15E48CT
24E48CT
80E48CT
175E48CT
M27/338-17
M27/339-17
M27/340-17
M27/341-17
M27/342-17
M27/343-17
55.0 0.036
0.109
0.262
0.435
1.450
3.170
A
B
C
D
E
F
89.00
17.30
7.20
3.83
0.67
0.196
2E55CT
6E55CT
15E55CT
24E55CT
80E55CT
175E55CT
M27/338-18
M27/339-18
M27/340-18
M27/341-18
M27/342-18
M27/343-18
63.0 0.031
0.095
0.238
0.380
1.270
2.770
A
B
C
D
E
F
100.00
24.90
6.51
5.35
0.71
0.20
2E63CT
6E63CT
15E63CT
24E63CT
80E63CT
175E63CT
M27/338-19
M27/339-19
M27/340-19
M27/341-19
M27/342-19
M27/343-19
70.0 0.028
0.085
0.214
0.342
1.140
2.500
A
B
C
D
E
F
139.00
27.10
9.40
8.10
0.80
0.25
2E70CT
6E70CT
15E70CT
24E70CT
80E70CT
175E07CT
M27/338-20
M27/339-20
M27/340-20
M27/341-20
M27/342-20
M27/343-20
80.0 0.025
0.075
0.198
0.300
1.000
2.180
A
B
C
D
E
F
163.00
39.00
13.40
9.00
0.92
0.34
2E80CT
6E80CT
15E80CT
24E80CT
80E80CT
175E80CT
M27/338-21
M27/339-21
M27/340-21
M27/341-21
M27/342-21
M27/343-21
90.0 0.022
0.067
0.166
0.267
0.890
1.940
A
B
C
D
E
F
218.00
41.00
15.90
12.50
1.08
0.38
2E90CT
6E90CT
15E90CT
24E90CT
80E90CT
175E90CT
M27/338-22
M27/339-22
M27/340-22
M27/341-22
M27/342-22
M27/343-22
100.0 0.020
0.060
0.150
0.240
0.800
1.750
A
B
C
D
E
F
283.00
59.50
16.80
14.40
1.642
0.520
2E100CT
6E100CT
15E100CT
24E100CT
80E100CT
175E100CT
M27/338-23
M27/339-23
M27/340-23
M27/341-23
M27/342-23
M27/343-23
110.0 0.018
0.054
0.136
0.218
0.728
1.590
A
B
C
D
E
F
392.00
62.30
22.10
19.50
2.03
0.72
2E110CT
6E110CT
15E110CT
24E110CT
80E110CT
175E110CT
M27/338-24
M27/339-24
M27/340-24
M27/341-24
M27/342-24
M27/343-24
115.0 0.017
0.052
0.130
0.209
0.696
1.520
A
B
C
D
E
F
410.00
65.10
23.10
20.40
2.12
0.72
2E115CT
6E115CT
15E115CT
24E115CT
80E115CT
175E115CT
M27/338-28
M27/339-28
M27/340-28
M27/341-28
M27/342-28
M27/343-28
123.0 0.016
0.048
0.122
0.195
0.650
1.420
A
B
C
D
E
F
495.00
96.00
30.70
21.90
2.35
0.81
2E123CT
6E123CT
15E123CT
24E123CT
80E123CT
175E123CT
M27/338-25
M27/339-25
M27/340-25
M27/341-25
M27/342-25
M27/343-25
138.0 0.014
0.043
0.108
0.174
0.580
1.260
A
B
C
D
E
F
550.00
133.00
36.00
30.30
3.17
1.14
2E138CT
6E138CT
15E138CT
24E138CT
80E138CT
175E138CT
M27/338-26
M27/339-26
M27/340-26
M27/341-26
M27/342-26
M27/343-26
157.0 0.038
0.095
0.152
0.508
1.100
B
C
D
E
F
153.00
53.00
36.10
3.60
1.31
6E157CT
15E157CT
24E157CT
80E157CT
175E157CT
M27/339-27
M27/340-27
M27/341-27
M27/342-27
M27/343-27
175.0 0.034
0.085
0.136
0.455
1.000
B
C
D
E
F
168.00
56.00
49.50
5.50
1.87
6E175CT
15E175CT
24E175CT
80E175CT
175E175CT
M27/339-28
M27/340-28
M27/341-28
M27/342-28
M27/343-28
200.0 0.030
0.071
0.120
0.400
0.675
B
C
D
E
F
248.00
65.00
57.00
5.60
2.65
6E200CT
15E200CT
24E200CT
80E200CT
175E200CT
M27/339-29
M27/340-29
M27/341-29
M27/342-29
M27/343-29
220.0 0.027
0.068
0.109
0.364
0.790
B
C
D
E
F
278.0
91.50
79.00
8.10
2.92
6E220CT
15E220CT
24E220CT
80E220CT
175E220CT
M27/339-30
M27/340-30
M27/341-30
M27/342-30
M27/343-30
250.0 0.024
0.060
0.096
0.320
0.700
B
C
D
E
F
407.00
141.00
114.00
8.10
2.92
6E250CT
15E250CT
24E250CT
80E250CT
175E250CT
N/A
N/A
N/A
N/A
N/A
275.0 0.021
0.054
0.087
0.290
0.635
B
C
D
E
F
417.00
146.00
120.00
13.60
4.65
6E275CT
15E275CT
24E275CT
80E275CT
175E275CT
N/A
N/A
N/A
N/A
N/A
310.0 0.019
0.048
0.077
0.256
0.565
B
C
D
E
F
592.00
160.00
180.00
14.10
6.80
6E310CT
15E310CT
24E310CT
80E310CT
175E310CT
N/A
N/A
N/A
N/A
N/A
350.0 0.017
0.042
0.068
0.217
0.500
B
C
D
E
F
680.00
232.00
200.00
21.20
8.00
6E350CT
15E350CT
24E350CT
80E350CT
175E350CT
N/A
N/A
N/A
N/A
N/A
387.0 0.038
0.062
0.206
0.450
C
D
E
F
310.00
225.00
22.70
10.00
15E387CT
24E387CT
80E387CT
175E387CT
N/A
N/A
N/A
N/A
433.0 0.034
0.055
0.184
0.404
C
D
E
F
457.00
300.00
31.60
11.20
15E433CT
24E433CT
80E433CT
175E433CT
N/A
N/A
N/A
N/A
486.0 0.049
0.164
0.360
D
E
F
340.00
35.60
16.00
24E486CT
80E486CT
175E486CT
N/A
N/A
N/A