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toroidal
power
transformers
The closed ring shape of a toroidal transformer
eliminates air gaps inherent in the construction
of an E-I core. The primary and secondary coils
are often wound concentrically to cover the entire
surface of the core, which provides screening to
minimize the core’s magnetic field from generating
electromagnetic interference.
Toroidal transformers are more efficient than
laminated E-I types for a similar power level. Other
advantages compared to E-I types, include smaller
size (about half), lower weight (about half), less
mechanical hum (making them superior in audio
amplifiers), lower exterior magnetic field (about
one tenth), low off-load losses (making them more
efficient in standby circuits), single-bolt mounting,
and greater choice of shapes.
Toroidal Power Tranformers
API Technologies winds their own silicon steel cores
to ensure that the grain boundaries are optimally
aligned, improving the transformer's efficiency by
reducing the core’s reluctance.
Ferrite toroidal cores are typically used at higher
frequencies, between a few tens of kilohertz to
hundreds of megahertz, to reduce losses, physical
size, and weight of inductive components.
Military DR Series
Other core types offered (but not limited to) are
Iron Powder (higher permeability), Moly Permalloy
(for higher accuracy), Carpenter 49 alloy (for low
loss and low distortion) and 3% silicon steel alloy
(which takes up to 4 times more voltage than
Moly Permalloy).
Heavy Duty 50/60 Hz
50/60 Hz, 100-240 V........................................... PT2-PT3
60 Hz, 100-240 V.................................................. PT4-PT6
50/60 Hz, 115-230 V........................................... PT6-PT8
60 Hz, 115-230 V................................................PT9-PT11
Europe ER Series
50/60 Hz, 5-15,000 V..................................... PT12-PT14
US FR Series
60 Hz, 120 V...................................................... PT15-PT17
400 Hz, 115-230 V........................................... PT18-PT23
Precision Transformers
400 Hz.............................................................................PT24
• Convert power-level voltages from one level
or phase configuration
• Lower magnetic leakage, lower electrical noise
and mechanical hum
• Excellent as isolation step-down
and high voltage step-up
transformers, autotransformer,
ferroresonant transformer
and smoothing inductor
+1 814.474.1571 • eis.apitech.com/magnetics
PT1
HEAVY DUTY 50/60 Hz
TOROIDAL POWER TRANSFORMERS
Advantages of Toroidal Power Transformers
• Lower mechanical hum
• Lower electrical noise
• Lower magnetic leakage
• Easier to electrostatically shield
• Lower weight
• Smaller dimensions
• Higher efficiency
• Price competitive vs. laminated transformers
Toroidal Power Transformers
50/60 Hz Primary Voltages 100 – 240 V
Dimensions and Construction
Dimensions in inches
International Primary Configurations
Voltage
Input
Connection
Black
Gray
Brown
Blue
100 V
1&5
Black
1&3
2&4
Gray
Brown
Blue
120 V
1&2
1&3
2&4
PT2
5&3
2&3
Red
HT
Red
Yellow
HT
Red
Yellow
White
5811
5812
5820
5821
5822
5826
5830
5832
5835
5829
5836
5837
5838
5839
5840
5841
5845
5846
5849
5850
5844
240 V
1&4
Red
White
Part No.
220 V
1&4
OD
Yellow
OD
Yellow
Secondary No Load
Power Voltage
VA
V
13.9
6
17.4
10.4
13.9
8
17.4
34.8
11.6
17.4
34.8
2x7
2x10.5
12
2x13.9
2x17.4
2x20.9
2x27.8
2x32.5
11.6
13.9
20
27.7
34.7
2x7
Load
Load
Voltage Current
V
A
12
0.5
15
0.4
9
0.89
12
0.67
15
0.53
30
0.27
10
1.2
15
0.8
30
0.4
2x6
1
2x9
0.67
2x12
0.5
2x15
0.4
2x18
0.33
2x24
0.25
2x28
0.21
10
2
12
1.7
24
0.83
30
0.67
2x6
1.7
Dimensions*
OD
HT
Nom
Inch
2
2.2
2.3
2.6
1
1
1.1
1.2
Part No.
5851
5853
5854
5855
5856
5862
5864
5865
5859
5866
5868
5869
5870
5873
5874
5876
5877
5878
5879
5880
Secondary No Load
Power Voltage
VA
V
2x11.6
2x17.3
20
2x20.7
2x27.7
2x32.4
17.3
27.7
34.7
2x7
25
2x11.6
2x17.3
2x20.7
2x27.7
27.2
34.2
2x13.6
40
2x17.1
2x20.5
2x22.8
2x27.2
Load
Load
Voltage Current
V
A
2x10
1
2x15
0.67
2x18
0.56
2x24
0.38
2x28
0.35
15
1.7
24
1
30
0.83
2x6
2
2x10
1.25
2x15
0.83
2x18
0.69
2x24
0.52
24
1.66
30
1.33
2x12
1.67
2x15
1.33
2x18
1.11
2x20
1
2x24
0.833
Dimensions*
OD
HT
Nom
Inch
2.6
1.2
2.6
1.3
3
1.3
+1 814.474.1571 • eis.apitech.com/magnetics
HEAVY DUTY 50/60 Hz
TOROIDAL POWER TRANSFORMERS
50/60 Hz Primary Voltages 100 – 240 V
5885
5886
5887
5882
5883
5884
5891
5892
5893
5901
5902
5903
5904
5905
5906
5907
5908
5909
5911
5912
5913
5919
5920
5923
5921
5922
5925
5926
5927
5933
5934
5937
5939
5940
5941
5942
5943
5944
5950
5951
5952
5953
5954
5955
5960
5961
5962
5963
5964
5966
5967
5968
5969
5970
5971
Secondary No Load
Power Voltage
VA
V
17
27
33.4
40.5
60
47.4
2x6.8
2x20.4
2x27
2x33.4
16.8
20.2
26.8
33.6
80
2x9
2x16.8
2x20.2
2x26.8
2x33.6
26.8
33.6
47
2x20
100
2x24.5
2x31.2
2x33.5
133.5
26.5
33.2
66.5
120
2x20
2x26.5
2x39.8
13.2
26.5
39.8
160
66.5
2x66.4
2x33
13
26.5
2x26.5
250
2x33
2x66
2x53
13
26
320
32.5
52
2x65
12.9
25.8
64.8
400
38.6
40.7
51.6
Load
Load
Voltage Current
V
A
15
4
24
2.5
30
2
36
1.67
42
1.43
2x6
5
2x18
1.67
2x24
1.25
2x30
1
15
5.33
18
4.44
24
3.33
30
2.67
2x8
5
2x15
2.67
2x18
2.22
2x24
1.67
2x30
1.33
24
4.16
30
3.33
42
2.38
2x18
2.78
2x22
2.27
2x28
1.79
2x30
1.67
120
0.833
24
5
30
4
60
2
2x18
3.33
2x24
2.5
2x36
1.67
12
13.3
24
6.67
36
4.44
60
2.67
2x60
1.33
2x30
2.67
12
20.8
24
10.4
2x24
5.21
2x30
4.17
2x60
2.08
2x48
2.6
12
26.7
24
13.3
30
10.7
2x48
3.33
2x60
2.67
12
33.4
24
16.7
60
6.7
2x36
5.56
2x38
5.1
2x48
4.04
+1 814.474.1571 • eis.apitech.com/magnetics
Dimensions*
OD
HT
Nom
Inch
3.1
3.6
3.6
1.4
1.5
1.5
Part No.
5973
5974
5975
5976
5977
5978
5982
5981
5983
5984
5980
5985
5986
5987
5988
5989
5280
5281
5290
5291
5295
5296
Secondary No Load
Power Voltage
VA
V
2x25.7
2x29.7
2x35
600
2x40.3
2x51
2x64
2x31.6
2x50.5
800
2x63.4
2x126.5
2x31.4
1200
2x63
2x125
2x49.8
2000
2x62.4
2x124.5
2x62.2
5000
2x124
2x61.5
7500
2x122.5
2x61.5
10,000
2x122.5
Load
Load
Voltage Current
V
A
2x24
12.5
2x28
10.7
2x33
9.09
2x38
7.8
2x48
6.2
2x60
5
2x30
13.3
2x48
8.3
2x60
6.7
2x120
3.3
2x30
20
2x60
10
2x120
5
2x48
20.8
2x60
16.7
2x120
8.3
2x60
41.6
2x120
20.8
2x60
62.5
2x120
31.2
2x60
83.3
2x120
41.6
Dimensions*
OD
HT
Nom
Inch
5.6
2.7
6.4
2.7
6.6
3.3
7.3
4.4
10.87
4.25
12.62
4.25
14.75
5.25
* Semi Epoxy Molded, Add 0.20" O.D. & 0.09" Ht. Full Epoxy Molded,
Add 0.20" O.D. & Ht.
Notes: Dimensions stated are based on perfect windings not always
achievable. Electrical data accurate to within ±6%.
4
1.5
Important Notes:
1.All transformers have been designed for 50/60 Hz
2.60 Hz to 400 Hz designs available upon request
3.Custom designs to customer specs are available
4.2
4.6
1.9
2
4.100% electrostatic shielding available on all
transformers with a small power derating
5.Magnetic shielding & lower magnetic leakage
designs for sensitive areas such as computer
& audio equipment, are available on all transformers
6.Low profile designs are available upon request
7.API can machine and wind toroids in excess of
50" dia. & 2000 lbs
4.9
2.2
5.2
2.3
PT3
Toroidal Power Transformers
Part No.
HEAVY DUTY 50/60 Hz
TOROIDAL POWER TRANSFORMERS
60 Hz Primary Voltages 100 – 240 V
Part
Number
Toroidal Power Transformers
6810
6811
6812
6813
6814
6815
6820
6821
6822
6823
6824
6825
6830
6831
6832
6833
6834
6835
6836
6837
6838
6839
6840
6841
6845
6846
6847
6848
6849
6850
6851
6852
6853
6854
6855
6856
6860
6861
6862
6863
6864
6865
6866
6867
6868
6869
6870
6871
6875
6876
6877
6878
6879
6880
6885
6886
6887
Output
Power
VA
7.5
10
15
25
30
50
75
No Load
Voltage
Volts
10.9
14.5
18.1
21.8
29
34
10.8
14.3
17.9
21.7
28.6
32.9
10.75
14.8
18.4
21.6
28.5
33.6
2x10.8
2x14.2
2x17.9
2x21.6
2x28.6
2x33.47
10.6
14.5
18.1
21.2
28.2
33
2x10.7
2x14.1
2x17.6
2x21.2
2x28.2
2x33.2
10.5
13.9
17.3
21
27.8
32.6
2x10.5
2x13.9
2x17.4
2x17.4
2x27.8
2x32.6
2x10.4
2x13.9
2x17.3
2x20.9
2x27.8
2x32.7
17.2
27.7
34.6
Load
Voltage
Volts
9
12
15
18
24
28
9
12
15
18
24
28
9
12
15
18
24
28
2x9
2x12
2x15
2x18
2x24
2x28
9
12
15
18
24
28
2x9
2x12
2x15
2x18
2x24
2x28
9
12
15
18
24
28
2x9
2x12
2x15
2x18
2x24
2x28
2x9
2x12
2x15
2x18
2x24
2x28
15
24
30
Load
Current
Amp
0.833
0.625
0.5
0.417
0.313
0.268
1.11
0.833
0.667
0.555
0.417
0.357
1.66
1.25
1
0.833
0.625
0.536
0.833
0.625
0.5
0.417
0.313
0.268
2.78
2.08
1.66
1.39
1.04
0.89
1.39
1.04
0.833
0.69
0.52
0.45
3.33
2.5
2
1.66
1.25
1.07
1.66
1.25
1
0.833
0.625
0.536
2.78
2.08
1.66
1.39
1.04
0.893
5
3.125
2.5
DCR @
20°C
Core Loss
W
1.06
1.76
2.8
4.23
7.12
10.4
0.747
1.25
1.96
3.02
5
5.75
0.434
0.95
1.5
1.75
2.92
4.37
2x0.878
2x1.45
2x2.33
2x3.51
2x5.91
2x8.59
0.252
0.547
0.865
1.01
1.68
2.49
2x0.51
2x0.84
2x1.33
2x2.03
2x3.4
2x5.01
0.183
0.306
0.479
0.731
1.23
1.8
2x0.366
2x0.615
2x0.961
2x1.47
2x2.45
2x3.65
2x0.218
2x0.367
2x0.575
2x0.879
2x1.46
2x2.18
0.196
0.504
0.793
0.101
0.101
0.101
0.101
0.101
0.101
0.123
0.123
0.123
0.123
0.123
0.123
0.16
0.16
0.16
0.16
0.16
0.16
0.16
0.16
0.16
0.16
0.16
0.16
0.205
0.205
0.205
0.205
0.205
0.205
0.205
0.205
0.205
0.205
0.205
0.205
0.24
0.24
0.24
0.24
0.24
0.24
0.24
0.24
0.24
0.24
0.24
0.24
0.318
0.318
0.318
0.318
0.318
0.318
0.415
0.415
0.415
Copper
Loss
W
1.33
1.28
1.29
1.33
1.29
1.34
1.67
1.61
1.61
1.68
1.6
1.44
2.41
2.78
2.78
2.43
2.34
2.48
2.45
2.33
2.38
2.44
2.36
2.44
3.58
4.07
4.1
3.6
3.46
3.62
3.62
3.46
3.48
3.6
3.47
3.64
4.03
3.89
3.89
4.03
3.91
4.07
4.03
3.91
3.89
4.04
3.88
4.09
6.64
6.48
6.46
6.66
6.45
6.79
8.88
8.96
8.99
Max. Dimen.
ODxHT
Inches*
Total
Weight
lbs
2.0
x
1.0
0.38
2.2
x
1.0
0.45
2.3
x
1.1
0.61
2.6
x
1.2
0.82
2.6
x
1.3
0.9
3.0
x
1.3
1.3
3.1
x
1.4
1.6
Voltage
Regulation
%
21.1
20.3
20.5
21.2
20.4
21.4
19.8
19.1
19.2
20
19.1
17.2
19.2
21.9
21.9
20
18.6
19
19.4
18.6
18.8
19.3
18.7
19.5
17.8
20
20.3
17.9
17.2
18
18
17.2
17.3
17.9
17.3
18.1
16
15.4
15.5
16
15.5
16.2
16
15.5
15.5
16
15.4
16.3
15.9
15.4
15.4
15.9
15.3
16.1
14.1
14.1
14.2
* Semi Epoxy Molded, Add 0.20" O.D. & 0.09" Ht. Full Epoxy Molded, Add 0.20" O.D. & Ht.
Notes: Dimensions stated are based on perfect windings not always achievable. Electrical data accurate to within ±6%.
PT4
+1 814.474.1571 • eis.apitech.com/magnetics
HEAVY DUTY 50/60 Hz
TOROIDAL POWER TRANSFORMERS
Part
Number
6888
6889
6890
6891
6892
6893
6900
6901
6902
6903
6904
6905
6906
6907
6908
6909
6915
6916
6917
6918
6919
6920
6921
Output
Power
VA
75
100
120
No Load
Voltage
Volts
2x10.4
2x13.8
2x17.3
2x20.7
2x27.5
2x34.4
13.6
16.9
20.4
27.1
33.7
2x9.5
2x16.9
2x20.4
2x26.9
2x33.8
20.5
25
2x13.7
2x17
2x20.4
2x25
2x34.1
6922
2x135
6930
6931
6932
6933
6934
6935
2x9.6
2x13.6
2x17
2x20.5
2x27.1
2x34
150
6936
2x135
6940
6941
6942
6943
6944
2x9.3
2x12.9
2x19.3
2x23.7
2x32.2
200
6945
2x128.9
6950
6951
6952
6953
6954
6955
6960
6961
6962
28.6
2x9.15
2x28.3
2x35.3
2x56.6
2x70.5
2x38.2
2x40.5
2x51
300
400
6963
2x127.5
6967
6968
6969
6970
6971
2x25.5
2x31.9
2x34.8
2x40.5
2x51
500
Load
Voltage
Volts
2x9
2x12
2x15
2x18
2x24
2x30
12
15
18
24
30
2x8.5
2x15
2x18
2x24
2x30
18
22
2x12
2x15
2x18
2x22
2x30
2x110,
120
2x8.5
2x12
2x15
2x18
2x24
2x30
2x110,
120
2x8.5
2x12
2x18
2x22
2x30
2x110,
120
26.5
2x8.5
2x26.5
2x33
2x53
2x66
2x36
2x36
2x46
2x110,
120
2x24
2x30
2x33
2x38
2x48
Load
Current
Amp
4.16
3.125
2.5
2.08
1.56
1.25
8.33
6.66
5.55
4.17
3.33
5.88
3.33
2.78
2.08
1.67
6.66
5.45
5
4
3.33
2.73
2
DCR @
20°C
Core Loss
W
2x0.15
2x0.252
2x0.397
2x0.6
2x1.01
2x1.58
0.075
0.118
0.179
0.299
0.47
2x0.660
2x0.236
2x0.358
2x0.595
2x0.950
0.152
0.23
2x0.128
2x0.2
2x0.3
2x0.47
2x0.8
0.415
0.415
0.415
0.415
0.415
0.415
0.524
0.524
0.524
0.524
0.524
0.524
0.524
0.524
0.524
0.524
0.67
0.67
0.67
0.67
0.67
0.670
0.670
Copper
Loss
W
9.25
8.96
8.99
9.25
8.93
8.95
10.4
10.4
10.8
10.4
10.4
9.67
10.5
10.8
10.3
10.4
11.4
11.6
11
11.11
11.4
11.6
11.2
Max. Dimen.
ODxHT
Inches*
Total
Weight
lbs
3.1
x
1.4
1.6
3.6
x
1.5
2.2
3.6
x
1.5
2.4
0.5
2x12.9
0.67
11.1
12.7
8.82
6.25
5
4.17
3.13
2.5
2x0.039
2x0.07
2x0.11
2x0.16
2x0.28
2x0.45
0.806
0.806
0.806
0.806
0.806
0.806
20
20
20
20
20
20
13
13
13
13
13
13
0.625
2x7.1
0.806
20
13
11.76
8.33
5.56
4.55
3.33
2x0.0253
2x0.0443
2x0.106
2x0.164
2x0.28
1.03
1.03
1.03
1.03
1.03
13.1
12
1.24
12.7
12.1
7.7
7.2
7.4
7.6
7.2
0.833
2x4.5
1.03
12.1
7.2
11.3
17.6
5.67
4.55
2.63
2.27
5.55
5.26
4.17
0.074
0.03
0.294
0.366
0.935
1.47
2x0.170
2x0.180
2x0.287
1.69
1.69
1.69
1.69
1.69
1.69
1.72
1.72
1.72
22.5
20.5
20.8
18.5
16.9
18.5
20
19.5
19.4
7.5
6.9
7
6.2
6.2
6.2
5.9
5.6
5.8
1.67
2x1.81
1.72
19.5
10.42
8.33
7.58
6.58
5.2
2x0.058
2x0.091
2x0.099
2x0.146
2x0.231
1.84
1.84
1.64
1.84
1.84
24.3
24.4
23.1
24.5
24.3
4.0
x
1.5
4.2
x
1.9
2.8
4.4
4.6
x
2.0
5.7
4.9
x
2.2
6.9
5.2
x
2.3
Voltage
Regulation
%
14.7
14.1
14.2
14.6
14.2
14.2
12.3
12.4
12.8
12.3
12.4
11.5
12.4
12.8
12.3
12.4
13
13.3
12.6
12.6
13
13
12.6
5.8
8
5.8
5.8
5.5
5.8
5.8
* Semi Epoxy Molded, Add 0.20" O.D. & 0.09" Ht. Full Epoxy Molded, Add 0.20" O.D. & Ht.
Notes: Dimensions stated are based on perfect windings not always achievable. Electrical data accurate to within ±6%.
+1 814.474.1571 • eis.apitech.com/magnetics
PT5
Toroidal Power Transformers
60 Hz Primary Voltages 100 – 240 V
HEAVY DUTY 50/60 Hz
TOROIDAL POWER TRANSFORMERS
60 Hz Primary Voltages 100 – 240 V
Part
Number
Output
Power
VA
6972
6973
6976
6977
6978
A
500
750
.50˝ 6979
12
6982
6983
No Load
Voltage
Volts
2x63.7
2x127.5
2x31.8
2x50.5
2x63.3
2x126
1K
2x31.1
2x62.3
Toroidal Power Transformers
6984
2x124.6
HT 6987
6988
2x49.3
2x62.2
Section A-A 6989
2.5K
2x123.3
OD
Load
Load
DCR @
Voltage
Current
20°C
Volts
Amp
2x60
4.17
2x0.365
2x110,
2.08
8: Yellow2x1.46
120
7: Yellow
2x30
12.5
2x0.0505
2x48
7.81
6: Red 2x0.127
2x60
6.25
5: Red 2x0.2
2x110,
A
3.13
2x0.8
.50˝120
12
2x30
16.66
2x0.0283
2x60
8.33
2x0.113
2 x110,
4.17
2x0.454
120
2x48
26
2x0.0214
2x60
20.8
2x0.0335
0.010˝
2x110, Nomex
10.4
2x0.133
Base
120 Washer
1.84
Copper
Loss
W
24.5
1.64
24.5
2.62
2.62
2.62
30.6
30
30.3
2.62
30.1
3.52
3.52
30.1
30.100
3.52
30.1
7.71
7.71
56.3
56.1
7.71
55.5
Core Loss
W
Max. Dimen.
ODxHT
Inches*
5.2
x
2.3
Total
Weight
lbs
Voltage
Regulation
%
5.8
8
5.8
5.6
x
2.7
11.2
6.4
x
2.7
15.5
4.8
4.6
4.6
4.8
3.6
3.6
3.6
7.3
x
4.4
2.7
2.7
32
2.7
* Semi Epoxy Molded, Add 0.20" O.D. & 0.09" Ht. Full Epoxy Molded, Add 0.20" O.D. & Ht.
Notes: Dimensions stated are based on perfect windings not always achievable. Electrical data accurate to within ±6%.
50/60 Hz Primary Voltages 115 – 230 V
International Primary Configurations
Voltage
Input
Connection
115 V
1&2
1 to 3 &
2 to 4
Dimensions in inches
Dimensions and Construction
230 V
1&4
2 to 3
Black
115 VAC
50/60 Hz.
Red
Brown
Blue
7
Red
Yellow
115 VAC
50/60 Hz.
8
Yellow
1: Black
2: Brown
3: Blue
4: White
A
White
.50˝
12
.50˝
12
A
8: Yellow
7: Yellow
6: Red
5: Red
HT
Section A-A
OD
0.010˝ Nomex
Base Washer
208V, 220 or 230 VAC primary on request
Max.
Secondary Load
Load
Total
Voltage
Dimen.
Part No. Power Voltage Current
Weight Regulation
ODxHT
VA
V
A
lbs
%
Inches*
2001
9
0.67
2002
12
0.5
2.2
2003
15
0.4
6
x
0.44
19
2004
18
0.33
1.1
2005
24
0.25
2006
28
0.21
2021
9
0.88
2022
12
0.67
2.4
2023
15
0.53
8
x
0.53
18
2024
18
0.44
1.1
2025
24
0.33
2026
28
0.28
PT6
Max.
Secondary Load
Load
Total
Voltage
Dimen.
Part No. Power Voltage Current
Weight Regulation
ODxHT
VA
V
A
lbs
%
Inches*
2041
9
1.33
2042
12
1
2043
15
0.8
2044
18
0.67
2045Black
24
0.5
2.5
2046115 VAC
28
0.43
Red x
12
0.72
15
2047
2x9
0.67
50/60 Hz.
1.1
2048
2x12
0.5
2049
2x15
0.4 Red
Brown
2050 Blue
2x18
0.33
7 Yellow
2051
2x24
0.25
2052115 VAC
2x28
0.21
50/60 Hz.
8 Yellow
+1 814.474.1571 • eis.apitech.com/magnetics
White
HEAVY DUTY 50/60 Hz
TOROIDAL POWER TRANSFORMERS
Max.
Secondary Load
Load
Total
Voltage
Dimen.
Part No. Power Voltage Current
Weight Regulation
ODxHT
VA
V
A
lbs
%
Inches*
2061
9
2.22
2062
12
1.67
2063
15
1.33
2064
18
1.11
2065
24
0.83
2.8
2066
28
0.71
20
x
0.92
16
2067
2x9
1.11
1.2
2068
2x12
0.83
2069
2x15
0.67
2070
2x18
0.555
2071
2x24
0.42
2072
2x28
0.36
2081
9
2.78
2082
12
2.08
2083
15
1.67
2084
18
1.39
2085
24
1.04
2.8
2086
28
0.89
25
x
1.1
15
2087
2x9
1.39
1.3
2088
2x12
1.04
2089
2x15
0.83
2090
2x18
0.69
2091
2x24
0.52
2092
2x28
0.45
2101
9
4.44
2102
12
3.33
2103
15
2.67
2104
18
2.22
2105
24
1.67
2106
28
1.43
2107
115
0.35
3.2
2108
2x9
2.22
40
x
1.5
15
2109
2x12
1.67
1.3
2110
2x15
1.33
2111
2x18
1.11
2112
2x24
0.83
2113
2x28
0.71
2114
2x48
0.42
2115
2x57.5 0.35
2116
2x115
0.17
2121
9
6.66
2122
12
5
2123
15
4
2124
18
3.33
2125
24
2.5
2126
28
2.14
2127
115
0.52
3.3
2128
2x9
3.33
1.9
13
60
x
2129
2x12
2.5
1.4
2130
2x15
2
2131
2x18
1.66
2132
2x24
1.25
2133
2x28
1.07
2134
2x48
0.63
2135
2x57.5 0.52
2136
2x115
0.26
+1 814.474.1571 • eis.apitech.com/magnetics
Max.
Secondary Load
Load
Total
Voltage
Dimen.
Part No. Power Voltage Current
Weight Regulation
ODxHT
VA
V
A
lbs
%
Inches*
2141
9
8.88
2142
12
6.66
2143
15
5.33
2144
18
4.44
2145
24
3.33
2146
28
2.86
2147
115
0.7
3.8
2148
2x9
4.44
x
2.5
13
80
2149
2x12
3.33
1.4
2150
2x15
2.67
2151
2x18
2.12
2152
2x24
1.67
2153
2x28
1.43
2154
2x48
0.83
2155
2x57.5
0.7
2156
1x115
0.35
2161
9
11.11
2162
12
8.33
2163
15
6.66
2164
18
5.55
2165
24
4.17
2166
28
3.57
2167
115
0.87
3.8
2168
2x9
5.56
100
x
2.5
16
2169
2x12
4.17
1.4
2170
2x15
3.33
2171
2x18
2.78
2172
2x24
2.08
2173
2x28
1.79
2174
2x48
1.04
2175
2x57.5 0.87
2176
2x115
0.43
2181
9
13.33
2182
12
10
2183
15
8
2184
18
6.66
2185
24
5
2186
28
4.29
2187
115
1.04
4.2
2188
2x9
6.66
120
x
3.3
13
2189
2x12
5
1.5
2190
2x15
4
2191
2x18
3.33
2192
2x24
2.5
2193
2x28
2.14
2194
2x48
1.25
2195
2x57.5 1.04
2196
2x115
0.52
2201
9
17.77
2202
12
13.33
2203
15
10.66
2204
18
8.88
4.5
160
x
4.9
8
2205
24
6.66
1.9
2206
28
5.71
2207
115
1.39
2208
2x9
8.89
2209
2x12
6.67
PT7
Toroidal Power Transformers
50/60 Hz Primary Voltages 115 – 230 V
HEAVY DUTY 50/60 Hz
TOROIDAL POWER TRANSFORMERS
50/60 Hz Primary Voltages 115 – 230 V
Toroidal Power Transformers
Max.
Secondary Load
Load
Total
Voltage
Dimen.
Part No. Power Voltage Current
Weight Regulation
ODxHT
VA
V
A
lbs
%
Inches*
2210
2x15
5.33
2211
2x18
4.44
2212
2x24
3.33
4.5
2213
160
2x28
2.86
x
4.9
8
1.9
2214
2x48
1.67
2215
2x57.5 1.39
2216
2x115
0.7
2222
12
20.83
2223
15
16.67
2224
18
13.89
2225
24
10.41
2226
28
8.93
2227
115
2.17
2228
2x9
13.88
4.8
x
6.2
8
250
2229
2x12
10.41
2.0
2230
2x15
8.33
2231
2x18
6.94
2232
2x24
5.2
2233
2x28
4.46
2234
2x48
2.6
2235
2x57.5 2.17
2236
2x115
1.09
2243
15
21.33
2244
18
17.78
2245
24
13.33
2246
28
11.42
2247
115
2.78
2248
2x9
17.77
5.2
2249
2x12
13.33
320
x
8.1
6
2250
2x15
10.67
2.2
2251
2x18
8.89
2252
2x24
6.67
2253
2x28
5.71
2254
2x48
3.33
2255
2x57.5 2.78
2256
2x115
1.39
2264
18
22.22
2265
24
15.67
2266
28
14.28
2267
115
3.48
2268
2x9
22.22
2269
2x12
16.67
5.5
2270
400
2x15
13.33
x
9.4
6
2.3
2271
2x18
11.11
2272
2x24
8.33
2273
2x28
7.14
2274
2x48
4.17
2275
2x57.5 3.48
2276
2x115
1.74
2285
24
25
2286
28
21.42
2287
115
5.22
6.0
600
x
13.2
5
2289
2x12
25
2.7
2280
2x15
20
2291
2x18
16.67
2292
2x24
12.5
PT8
Max.
Secondary Load
Load
Total
Voltage
Dimen.
Part No. Power Voltage Current
Weight Regulation
ODxHT
VA
V
A
lbs
%
Inches*
2293
2x28
10.71
6.0
2294
2x48
6.25
600
x
13.2
5
2295
2x57.5 5.22
2.7
2296
2x115
2.61
2307
115
6.96
2311
2x18
22.22
2312
2x24
16.67
6.8
2313
800
2x28
14.28
x
16.8
4
2.7
2314
2x48
8.33
2315
2x57.5 6.96
2316
2x115
3.48
2327
115
10.43
2332
2x24
25.0
7.1
2333
2x28
21.42
1200
x
22
4
2334
2x48
12.5
3.4
2335
2x57.5 10.43
2336
2x115
5.22
2347
115
17.39
7.8
2354
2x48
20.83
2000
x
36
3
2355
2x57.5 17.39
4.4
2356
2x115
8.7
10.5
2376
5000
2 x 115 21.74
x
77
2
5.0
11.7
2396
7500
2x115 32.51
x
116
2
6.0
* Semi Epoxy Molded, Add 0.20" O.D. & 0.09" Ht. Full Epoxy Molded,
Add 0.20" O.D. & Ht.
Notes: Mechanical dimensions and electrical data accurate to within ±3%.
Important Notes:
1.All transformers have been designed for 50/60 Hz
2.60 Hz to 400 Hz designs available upon request
3.Custom designs to customer specs are available
4.100% electrostatic shielding available on all
transformers with a small power derating
5.Magnetic shielding & lower magnetic leakage
designs for sensitive areas such as computer
& audio equipment, are available on all transformers
6.Low profile designs are available upon request
7.API can machine and wind toroids in excess of
50" dia. & 2000 lbs.
+1 814.474.1571 • eis.apitech.com/magnetics
HT
0.010˝ Nomex
Base Washer
Section A-A
OD
HEAVY DUTY
50/60 Hz
TOROIDAL POWER TRANSFORMERS
60 Hz Primary Voltages 115 – 230 V
International Primary Configurations
Voltage
Input
Connection
115 V
1&2
1 to 3 &
2 to 4
230 V
1&4
2 to 3
1: Black
2: White
Red
Black
115 VAC
60 Hz.
Dimensions in inches
Dimensions and Construction
A
Red
Yellow
.50˝
12
.50˝
12
A
6: Yellow
5: Yellow
4: Red
3: Red
Yellow
Section A-A
OD
0.010˝ Nomex
Base Washer
208V, 220 or 230 VAC primary on request
Part No.
1001
1002
1003
1004
1005
1006
1021
1022
1023
1024
1025
1026
1041
1042
1043
1044
1045
1046
1047
1048
1049
1050
1051
1052
1061
1062
1063
1064
1065
1066
1067
1068
1069
1070
1071
1072
Max.
Secondary Load
Load
Total
Voltage
Dimen.
Power Voltage Current
Weight Regulation
ODxHT
VA
V
A
lbs
%
Inches*
9
0.83
12
0.63
2.2
15
0.5
7.5
x
0.41
21
18
0.42
1.1
24
0.31
28
0.27
9
1.11
12
0.83
2.4
15
0.67
10
x
0.53
20
18
0.56
1.1
24
0.42
28
0.36
9
1.67
12
1.25
15
1
18
0.83
24
0.63
2.5
28
0.54
15
x
0.64
19
2x9
0.83
1.1
2x12
0.63
2x15
0.5
2x18
0.42
2x24
0.31
2x28
0.27
9
2.78
12
2.08
15
1.67
18
1.39
24
1.04
2.8
28
0.89
25
x
0.85
18
2x9
1.39
1.2
2x12
1.04
2x15
0.83
2x18
0.69
2x24
0.52
2x28
0.45
+1 814.474.1571 • eis.apitech.com/magnetics
Max.
Secondary Load
Load
Total
Voltage
Dimen.
Power Voltage Current
Weight Regulation
ODxHT
VA
V
A
lbs
%
Inches*
9
3.33
1081
1082
12
2.5
1083
15
2
1084
18
1.67
1085
24
1.25
2.8
1086
28
1.07Red
30
x
0.98
16
1087Black
2x9
1.67
1.3
1088
2x12
1.25
1089115 VAC
2x15
1 Red
1090 60 Hz.
2x18
0.83Yellow
1091
2x24
0.63
1092White
2x28
0.54
1101
9
5.56Yellow
1102
12
4.17
1103
15
3.33
1104
18
2.78
1105
24
2.08
1106
28
1.79
1107
115
0.43
3.2
1108
2x9
2.78
x
1.34
16
50
1109
2x12
2.08
1.3
1110
2x15
1.67
1111
2x18
1.39
1112
2x24
1.04
1113
2x28
0.89
1114
2x48
0.52
1115
2x57.5 0.43
1116
2x115
0.22
1121
9
8.33
1122
12
6.25
1123
15
5
3.3
1124
18
4.17
75
x
1.74
14
1125
24
3.13
1.4
1126
28
2.68
1127
115
0.65
1128
2x9
4.17
Part No.
PT9
Toroidal Power Transformers
HT
White
HEAVY DUTY 50/60 Hz
TOROIDAL POWER TRANSFORMERS
60 Hz Primary Voltages 115 – 230 V
Toroidal Power Transformers
Max.
Secondary Load
Load
Total
Voltage
Dimen.
Part No. Power Voltage Current
Weight Regulation
ODxHT
VA
V
A
lbs
%
Inches*
1129
2x12
3.13
1130
2x15
2.5
1131
2x18
2.08
3.3
1132
2x24
1.56
75
x
1.74
14
1133
2x28
1.34
1.4
1134
2x48
0.78
1135
2x57.5 0.65
1136
2x115
0.33
1141
9
11.11
1142
12
8.33
1143
15
6.67
1144
18
5.55
1145
24
4.17
1146
28
3.57
1147
115
0.87
3.8
1148
2x9
5.55
x
2.24
12
100
1149
2x12
4.17
1.4
1150
2x15
3.33
1151
2x18
2.78
1152
2x24
2.08
1153
2x28
1.79
1154
2x48
1.04
1155
2x57.5 0.87
1156
2x115
0.43
1161
9
13.33
1162
12
10
1163
15
8
1164
18
6.67
1165
24
5
1166
28
4.29
1167
115
1.04
3.8
1168
2x9
6.67
120
x
2.24
14
1169
2x12
5
1.4
1170
2x15
4
1171
2x18
3.33
1172
2x24
2.5
1173
2x28
2.14
1174
2x48
1.25
1175
2x57.5 1.04
1176
2x115
0.52
1181
9
16.67
1182
12
12.5
1183
15
10
1184
18
8.33
1185
24
6.25
1186
28
5.36
1187
115
1.3
4.2
1188
2x9
8.33
3.56
8
150
x
1189
2x12
6.25
1.5
1190
2x15
5
1191
2x18
4.17
1192
2x24
3.13
1193
2x28
2.68
1194
2x48
1.56
1195
2x57.5
1.3
1196
2x115
0.65
PT10
Max.
Secondary Load
Load
Total
Voltage
Dimen.
Part No. Power Voltage Current
Weight Regulation
ODxHT
VA
V
A
lbs
%
Inches*
1201
9
22.22
1202
12
16.67
1203
15
13.33
1204
18
11.11
1205
24
8.33
1206
28
7.14
1207
115
1.74
4.5
1208
2x9
11.11
x
4.3
7
200
1209
2x12
8.33
1.9
1210
2x15
6.67
1211
2x18
5.56
1212
2x24
4.17
1213
2x28
3.57
1214
2x48
2.08
1215
2x57.5 1.74
1216
2x115
0.89
1222
12
25
1223
15
20
1224
18
16.67
1225
24
12.5
1226
28
10.71
1227
115
2.61
1228
2x9
16.67
4.8
300
x
5.2
6
1229
2x12
12.5
2.0
1230
2x15
10
1231
2x18
8.33
1232
2x24
6.25
1233
2x28
5.36
1234
2x48
3.13
1235
2x57.5 2.61
1236
2x115
1.3
1243
15
26.67
1244
18
22.22
1245
24
16.67
1246
28
14.29
1247
115
3.48
1248
2x9
22.22
5.2
1249
2x12
16.67
400
x
7.2
6
1250
2x15
13.33
2.2
1251
2x18
11.11
1252
2x24
8.33
1253
2x28
7.14
1254
2x48
4.17
1255
2x57.5 3.48
1256
2x115
1.74
1263
15
33.33
1264
18
27.78
1265
24
20.83
1266
28
17.86
1267
115
4.35
5.2
1268
500
2x9
27.78
x
8.2
6
2.3
1269
2x12
20.83
1270
2x15
16.67
1271
2x18
13.89
1272
2x24
10.42
1273
2x28
8.93
+1 814.474.1571 • eis.apitech.com/magnetics
HEAVY DUTY 50/60 Hz
TOROIDAL POWER TRANSFORMERS
60 Hz Primary Voltages 115 – 230 V
Toroidal Power Transformers
Max.
Secondary Load
Load
Total
Voltage
Dimen.
Part No. Power Voltage Current
Weight Regulation
ODxHT
VA
V
A
lbs
%
Inches*
1274
2x48
5.21
5.2
1275
500
2x57.5 4.35
x
8.2
6
2.3
1276
2x115
2.17
1285
24
31.25
1286
28
26.79
1287
115
6.52
1289
2x12
31.25
1280
2x15
25
6.0
1291
750
2x18
20.83
x
11.6
5
2.7
1292
2x24
15.63
1293
2x28
13.39
1294
2x48
7.81
1295
2x57.5
6
1296
2x115
3.26
1307
115
8.7
1311
2x18
27.78
1312
2x24
20.83
6.8
1313
1000
2x28
17.86
x
15.9
4
2.7
1314
2x48
10.42
1315
2x57.5
8.7
1316
2x115
4.35
1317
115
13.04
1322
2x24
31.25
7.1
1323
2x28
26.78
1500
x
22
4
1324
2x48
15.63
3.4
1325
2x57.5 13.04
1326
2x115
6.52
1327
115
21.74
7.8
1334
2x48
26.04
2500
x
33
3
1335
2x57.5 21.74
4.4
1336
2x115 10.87
10.5
1356
6000
2x115 26.09
x
77
2
5.0
11.7
1376
9000
2x115 39.13
116
2
x
6.0
* Semi Epoxy Molded, Add 0.20" O.D. & 0.09" Ht. Full Epoxy Molded,
Add 0.20" O.D. & Ht.
Notes: Mechanical dimensions and electrical data accurate to within ±3%.
Important Notes:
1.All transformers have been designed for 50/60 Hz
2.60 Hz to 400 Hz designs available upon request
3.Custom designs to customer specs are available
4.100% electrostatic shielding available on all
transformers with a small power derating
5.Magnetic shielding & lower magnetic leakage
designs for sensitive areas such as computer
& audio equipment, are available on all transformers
6.Low profile designs are available upon request
7.API can machine and wind toroids in excess of
50" dia. & 2000 lbs
+1 814.474.1571 • eis.apitech.com/magnetics
PT11
HT
Section A-A
0.010˝ Nomex
Base Washer
OD
EUROPE ER SERIES, 50/60 Hz
TOROIDAL POWER TRANSFORMERS
50/60 Hz, 5-15,000 V Europe ER Series
Voltage
Input
Connection
115 V
1&2
1 to 3 and
2 to 4
230 V
1&4
2 to 3
Dimensions and Construction
Dimensions in inches
Black
115 VAC
50/60 Hz.
Red
Brown
Toroidal Power Transformers
Blue
7
White/Red
Yellow
115 VAC
50/60 Hz.
8
White/Yellow
1: Black
2: Brown
3: Blue
4: White
A
.50˝
12
White
ER012-0009
ER012-0012
ER012-0015
ER012-0018
ER012-0024
ER012-0028
ER012-2009
ER012-2012
ER012-2015
ER012-2018
ER012-2024
ER012-2028
ER020-0009
ER020-0012
ER020-0015
ER020-0018
ER020-0024
ER020-0028
ER020-2009
ER020-2012
ER020-2015
ER020-2018
ER020-2024
ER020-2028
ER025-0009
ER025-0012
ER025-0015
ER025-0018
ER025-0024
ER025-0028
ER025-2009
ER025-2012
ER025-2015
ER025-2018
ER025-2024
ER025-2028
PT12
A
HT
208V, 220 or 240 VAC primary on request
Pin numbers are for reference only
Part No.
.50˝
12
8: White/Yellow
7: Yellow
6: White/Red
5: Red
Section A-A
Max.
Secondary Load Load
Total Voltage
Dimen.
Power Voltage Current
Weight Regulation
ODxHT
VA
V
A
lbs
%
Inches*
9
1.33
12
1
15
0.8
18
0.67
24
0.5
2.5
28
0.43
12
x
0.72
15
2x9
0.67
1.1
2x12
0.5
2x15
0.4
2x18
0.33
2x24
0.25
2x28
0.21
9
2.22
12
1.67
15
1.33
18
1.11
24
0.83
2.8
28
0.71
20
x
0.92
16
2x9
1.11
1.2
2x12
0.83
2x15
0.67
2x18
0.56
2x24
0.42
2x28
0.36
9
2.78
12
2.08
15
1.67
18
1.39
24
1.04
2.8
28
0.89
25
x
1.1
15
2x9
1.39
1.3
2x12
1.04
2x15
0.83
2x18
0.69
2x24
0.52
2x28
0.45
Part No.
ER040-0009
ER040-0012
ER040-0015
ER040-0018
ER040-0024
ER040-0028
Black
ER040-0115
ER040-2009
115 VAC
50/60
Hz.
ER040-2012
ER040-2015
Brown
ER040-2018
ER040-2024
Blue
ER040-2028
115 VAC
ER040-2048
50/60
Hz.
ER040-2575
ER040-2115
White
ER060-0009
ER060-0012
ER060-0015
ER060-0018
ER060-0024
ER060-0028
ER060-0115
ER060-2009
ER060-2012
ER060-2015
ER060-2018
ER060-2024
ER060-2028
ER060-2048
ER060-2575
ER060-2115
ER080-0009
ER080-0012
ER080-0015
OD
0.010˝ Nomex
Base Washer
Max.
Secondary Load Load
Total
Voltage
Dimen.
Power Voltage Current
Weight Regulation
ODxHT
VA
V
A
lbs
%
Inches*
9
4.44
12
3.33
15
2.67
18
2.22
24
1.67
28
1.43
115
0.35
3.2
2x9 Red2.22
40
x
1.5
15
2x12
1.67
1.3
2x15
1.33
2x18 White/Red
1.11
2x24
0.83
7 Yellow
2x28
0.71
2x48
0.42
8 White/Yellow
2x57.5
0.35
2x115 0.17
9
6.67
12
5
15
4
18
3.33
24
2.5
28
2.14
115
0.52
3.3
2x9
3.33
60
x
1.9
13
2x12
2.5
1.4
2x15
2
2x18
1.67
2x24
1.25
2x28
1.07
2x48
0.63
2x57.5 0.52
2x115 0.26
9
8.89
3.8
80
12
6.67
x
2.5
13
1.4
15
5.33
+1 814.474.1571 • eis.apitech.com/magnetics
EUROPE ER SERIES, 50/60 Hz
TOROIDAL POWER TRANSFORMERS
Part No.
ER080-0018
ER080-0024
ER080-0028
ER080-0115
ER080-2009
ER080-2012
ER080-2015
ER080-2018
ER080-2024
ER080-2028
ER080-2048
ER080-2575
ER080-2115
ER100-0009
ER100-0012
ER100-0015
ER100-0018
ER100-0024
ER100-0028
ER100-0115
ER100-2009
ER100-2012
ER100-2015
ER100-2018
ER100-2024
ER100-2028
ER100-2048
ER100-2575
ER100-2115
ER120-0009
ER120-0012
ER120-0015
ER120-0018
ER120-0024
ER120-0028
ER120-0115
ER120-2009
ER120-2012
ER120-2015
ER120-2018
ER120-2024
ER120-2028
ER120-2048
ER120-2575
ER120-2115
ER160-0009
ER160-0012
ER160-0015
ER160-0018
ER160-0024
ER160-0028
ER160-0115
ER160-2009
ER160-2012
ER160-2015
ER160-2018
ER160-2024
Max.
Secondary Load Load
Total Voltage
Dimen.
Power Voltage Current
Weight Regulation
ODxHT
VA
V
A
lbs
%
Inches*
18
4.44
24
3.33
28
2.86
115
0.7
2x9
4.44
2x12
3.33
3.8
2x15
2.67
80
x
2.5
13
1.4
2x18
2.22
2x24
1.67
2x28
1.43
2x48
0.83
2x57.5 0.7
2x115 0.35
9
11.11
12
8.33
15
6.67
18
5.56
24
4.17
28
3.57
115
0.87
3.8
2x9
5.56
100
x
2.5
16
2x12
4.17
1.4
2x15
3.33
2x18
2.78
2x24
2.08
2x28
1.79
2x48
1.04
2x57.5 0.87
2x115 0.43
9
13.33
12
10
15
8
18
6.67
24
5
28
4.29
115
1.04
4.2
2x9
6.67
120
x
3.3
13
2x12
5
1.5
2x15
4
2x18
3.33
2x24
2.5
2x28
2.14
2x48
1.25
2x57.5 1.04
2x115 0.52
9
17.78
12
13.33
15
10.67
18
8.89
24
6.67
4.5
28
5.71
160
x
4.9
8
115
1.39
1.9
2x9
8.89
2x12
6.67
2x15
5.33
2x18
4.44
2x24
3.33
+1 814.474.1571 • eis.apitech.com/magnetics
Part No.
ER160-2028
ER160-2048
ER160-2575
ER160-2115
ER250-0012
ER250-0015
ER250-0018
ER250-0024
ER250-0028
ER250-0115
ER250-2009
ER250-2012
ER250-2015
ER250-2018
ER250-2024
ER250-2028
ER250-2048
ER250-2575
ER250-2115
ER320-0015
ER320-0018
ER320-0024
ER320-0028
ER320-0115
ER320-2009
ER320-2012
ER320-2015
ER320-2018
ER320-2024
ER320-2028
ER320-2048
ER320-2575
ER320-2115
ER400-0018
ER400-0024
ER400-0028
ER400-0115
ER400-2009
ER400-2012
ER400-2015
ER400-2018
ER400-2024
ER400-2028
ER400-2048
ER400-2575
ER400-2115
ER600-0024
ER600-0028
ER600-0115
ER600-2012
ER600-2015
ER600-2018
ER600-2024
ER600-2028
ER600-2048
ER600-2575
ER600-2115
Max.
Secondary Load Load
Total
Voltage
Dimen.
Power Voltage Current
Weight Regulation
ODxHT
VA
V
A
lbs
%
Inches*
2x28
2.86
4.5
2x48
1.67
160
x
4.9
8
2x57.5 1.39
1.9
2x115
0.7
12
20.83
15
16.67
18
13.89
24
10.42
28
8.93
115
2.17
2x9
13.89
4.8
250
2x12 10.42
x
6.2
8
2.0
2x15
8.33
2x18
6.94
2x24
5.21
2x28
4.46
2x48
2.6
2x57.5 2.17
2x115 1.09
15
21.33
18
17.78
24
13.33
28
11.43
115
2.78
2x9
17.78
5.2
2x12 13.33
320
x
8.1
6
2x15 10.67
2.2
2x18
8.89
2x24
6.67
2x28
5.71
2x48
3.33
2x57.5 2.78
2x115 1.39
18
22.22
24
16.67
28
14.29
115
3.48
2x9
22.22
2x12 16.67
5.5
2x15 13.33
400
x
9.4
6
2.3
2x18 11.11
2x24
8.33
2x28
7.14
2x48
4.17
2x57.5 3.48
2x115 1.74
24
25
28
21.43
115
5.22
2x12
25
2x15
20
6.0
600
x
13.2
5
2x18 16.67
2.7
2x24
12.5
2x28 10.71
2x48
6.25
2x57.5 5.22
2x115 2.61
PT13
Toroidal Power Transformers
50/60 Hz, 5-15,000 V Europe ER Series
EUROPE ER SERIES, 50/60 Hz
TOROIDAL POWER TRANSFORMERS
50/60 Hz, 5-15,000 V Europe ER Series
Part No.
Toroidal Power Transformers
ER800-0115
ER800-2018
ER800-2024
ER800-2028
ER800-2048
ER800-2575
ER800-2115
ER122-0115
ER122-2024
ER122-2028
ER122-2048
ER122-2575
ER122-2115
ER202-0115
ER202-2048
ER202-2575
ER202-2115
ER502-2115
Max.
Secondary Load Load
Total
Voltage
Dimen.
Power Voltage Current
Weight Regulation
ODxHT
VA
V
A
lbs
%
Inches*
115
6.96
2x18 22.22
2x24 16.67
6.8
2x28 14.29
800
x
16.8
4
2.7
2x48
8.33
2x57.5 6.96
2x115 3.48
115
10.43
2x24
25
7.1
2x28 21.43
1200
x
22
4
2x48
12.5
3.4
2x57.5 10.43
2x115 5.22
115
17.39
7.8
2x48 20.83
2000
x
36
3
2x57.5 17.39
4.4
2x115
8.7
10.5
5000
2x115 21.74
x
77
2
5.0
* Semi Epoxy Molded, Add 0.20" O.D. & 0.09" Ht. Full Epoxy Molded,
Add 0.20" O.D. & Ht.
Notes: Mechanical dimensions and electrical data accurate to within ±3%.
Important Notes:
1.All transformers have been designed for 50/60 Hz
2.60 Hz to 400 Hz designs available upon request
3.Custom designs to customer specs are available
4.100% electrostatic shielding available on all
transformers with a small power derating
5.Magnetic shielding & lower magnetic leakage
designs for sensitive areas such as computer
& audio equipment, are available on all transformers
6.Low profile designs are available upon request
7.API can machine and wind toroids in excess of
50" dia. & 2000 lbs
PT14
+1 814.474.1571 • eis.apitech.com/magnetics
D
US FR SERIES, 60 Hz
TOROIDAL POWER TRANSFORMERS
60 Hz, 120 V US FR Series
Dimensions and Construction
Dimensions in inches
Red
Black
White/Red
Yellow
1: Black
2: White
A
White
.50˝
12
White/Yellow
100, 208, 220 or 230 VAC primary on request
Pin numbers are for reference only
.50˝
12
H
Section A-A
Max.
Secondary Load Load
Total Voltage
Dimen.
Power Voltage Current
Weight Regulation
ODxHT
VA
V
V
lbs
%
Inches*
FR008-0009
9
0.83
FR008-0012
12
0.62
2.2
FR008-0015
15
0.5
8
x
0.41
21
FR008-0018
18
0.41
1.1
FR008-0024
24
0.31
FR008-0028
28
0.26
FR010-0009
9
1.11
FR010-0012
12
0.83
2.4
FR010-0015
15
0.66
10
x
0.53
20
FR010-0018
18
0.55
1.1
FR010-0024
24
0.41
FR010-0028
28
0.35
FR015-0009
9
1.66
FR015-0012
12
1.25
FR015-0015
15
1
FR015-0018
18
0.83
FR015-0024
24
0.62
2.5
FR015-0028
28
0.53
15
x
0.64
18
FR015-2009
2x9
0.83
1.1
FR015-2012
2x12
0.62
FR015-2015
2x15
0.5
FR015-2018
2x18
0.41
FR015-2024
2x24
0.31
FR015-2028
2x28
0.26
FR025-0009
9
2.78
FR025-0012
12
2.08
FR025-0015
15
1.67
FR025-0018
18
1.39
FR025-0024
24
1.04
2.8
FR025-0028
28
0.89
25
x
0.85
18
FR025-2009
2x9
1.39
1.2
FR025-2012
2x12
1.04
FR025-2015
2x15
0.83
FR025-2018
2x18
0.69
FR025-2024
2x24
0.52
FR025-2028
2x28
0.45
FR030-0009
9
3.33
2.8
FR030-0012
12
2.5
30
x
0.98
16
FR030-0015
15
2
1.3
FR030-0018
18
1.67
Part
No.
+1 814.474.1571 • eis.apitech.com/magnetics
A
6: White/Yellow
5: Yellow
4: White/Red
3: Red
D
0.010˝ Nomex
Base Washer
Max.
Secondary Load Load
Total Voltage
Dimen.
Power Voltage Current
Weight Regulation
ODxHT
VA
V
V
lbs
%
Inches*
FR030-0024
24
1.25
FR030-0028
28
1.07
FR030-2009
2x9
1.67
2.8
FR030-2012
2x12
1.25
30
x
0.98
16
FR030-2015
2x15
1
1.3
FR030-2018
2x18
0.83
FR030-2024
2x24
0.63
FR030-2028
2x28Red0.54
FR050-0009
9
5.56
Black
FR050-0012
12
4.17
115 VAC
FR050-0015
15 White/Red
3.33
60 Hz.
FR050-0018
18 Yellow
2.78
FR050-0024
24
2.08
White
FR050-0028
28
1.79
White/Yellow
FR050-0115
115
0.43
3.2
FR050-2009
2x9
2.78
x
1.34
16
50
FR050-2012
2x12
2.08
1.3
FR050-2015
2x15
1.67
FR050-2018
2x18
1.39
FR050-2024
2x24
1.04
FR050-2028
2x28
0.89
FR050-2048
2x48
0.52
FR050-2575
2x57.5 0.43
FR050-2115
2x115 0.22
FR075-0009
9
8.33
FR075-0012
12
6.25
FR075-0015
15
5
FR075-0018
18
4.17
FR075-0024
24
3.13
FR075-0028
28
2.68
FR075-0115
115
0.65
3.3
FR075-2009
2x9
4.17
75
x
1.74
14
FR075-2012
2x12
3.13
1.4
FR075-2015
2x15
2.5
FR075-2018
2x18
2.08
FR075-2024
2x24
1.56
FR075-2028
2x28
1.34
FR075-2048
2x48
0.78
FR075-2575
2x57.5 0.65
FR075-2115
2x115 0.33
Part
No.
PT15
Toroidal Power Transformers
115 VAC
60 Hz.
US FR SERIES, 60 Hz
TOROIDAL POWER TRANSFORMERS
60 Hz, 120 V US FR Series
Max.
Secondary Load Load
Total Voltage
Dimen.
Power Voltage Current
Weight Regulation
ODxHT
VA
V
V
lbs
%
Inches*
FR100-0009
9
11.11
FR100-0012
12
8.33
FR100-0015
15
6.67
FR100-0018
18
5.56
FR100-0024
24
4.17
FR100-0028
28
3.57
FR100-0115
115
0.87
3.8
FR100-2009
2x9
5.56
100
x
2.24
12
FR100-2012
2x12
4.17
1.4
FR100-2015
2x15
3.33
FR100-2018
2x18
2.78
FR100-2024
2x24
2.08
FR100-2028
2x28
1.79
FR100-2048
2x48
1.04
FR100-2575
2x57.5 0.87
FR100-2115
2x115 0.43
FR120-0009
9
13.33
FR120-0012
12
10
FR120-0015
15
8
FR120-0018
18
6.67
FR120-0024
24
5
FR120-0028
28
4.29
FR120-0115
115
1.04
3.8
FR120-2009
2x9
6.67
120
x
2.24
14
FR120-2012
2x12
5
1.4
FR120-2015
2x15
4
FR120-2018
2x18
3.33
FR120-2024
2x24
2.5
FR120-2028
2x28
2.14
FR120-2048
2x48
1.25
FR120-2575
2x57.5 1.04
FR120-2115
2x115 0.52
FR150-0009
9
16.67
FR150-0012
12
12.5
FR150-0015
15
10
FR150-0018
18
8.33
FR150-0024
24
6.25
FR150-0028
28
5.36
FR150-0115
115
1.3
4.2
FR150-2009
2x9
8.33
150
x
3.56
8
FR150-2012
2x12
6.25
1.5
FR150-2015
2x15
5
FR150-2018
2x18
4.17
FR150-2024
2x24
3.13
FR150-2028
2x28
2.68
FR150-2048
2x48
1.56
FR150-2575
2x57.5 1.3
FR150-2115
2x115 0.65
FR200-0009
9
22.22
FR200-0012
12
16.67
FR200-0015
15
13.33
FR200-0018
18
11.11
4.5
200
x
4.3
7
FR200-0024
24
8.33
1.9
FR200-0028
28
7.14
FR200-0115
115
1.74
FR200-2009
2x9
11.11
FR200-2012
2x12
8.33
Part
No.
Toroidal Power Transformers
PT16
Max.
Secondary Load Load
Total Voltage
Dimen.
Power Voltage Current
Weight Regulation
ODxHT
VA
V
V
lbs
%
Inches*
FR200-2015
2x15
6.67
FR200-2018
2x18
5.56
FR200-2024
2x24
4.17
4.5
FR200-2028
200
2x28
3.57
x
4.3
7
1.9
FR200-2048
2x48
2.08
FR200-2575
2x57.5 1.74
FR200-2115
2x115 0.87
FR250-0012
12
20.83
FR250-0015
15
16.66
FR250-0018
18
13.88
FR250-0024
24
10.41
FR250-0028
28
8.92
FR250-0115
115
2.17
FR250-2009
2x9
13.88
4.6
FR250-2012
250
2x12 10.41
x
4.7
7
2.0
FR250-2015
2x15
8.33
FR250-2018
2x18
6.94
FR250-2024
2x24
5.2
FR250-2028
2x28
4.46
FR250-2048
2x48
2.6
FR250-2575
2x57.5 2.17
FR250-2115
2x115 1.08
FR300-0012
12
25
FR300-0015
15
20
FR300-0018
18
16.67
FR300-0024
24
12.5
FR300-0028
28
10.71
FR300-0115
115
2.61
FR300-2009
2x9
16.67
4.8
FR300-2012
2x12
12.5
300
x
5.2
6
2.0
FR300-2015
2x15
10
FR300-2018
2x18
8.34
FR300-2024
2x24
6.25
FR300-2028
2x28
5.36
FR300-2048
2x48
3.13
FR300-2575
2x57.5 2.61
FR300-2115
2x115
1.3
FR360-0012
12
30
FR360-0015
15
24
FR360-0018
18
20
FR360-0024
24
15
FR360-0028
28
12.85
FR360-0115
115
3.13
FR360-2009
2x9
20
5.0
FR360-2012
2x12
15
360
x
6.2
6
2.1
FR360-2015
2x15
12
FR360-2018
2x18
10
FR360-2024
2x24
7.5
FR360-2028
2x28
6.42
FR360-2048
2x48
3.75
FR360-2575
2x57.5 3.13
FR360-2115
2x115 1.56
FR400-0015
15
26.67
FR400-0018
18
22.22
5.2
FR400-0024
400
24
16.67
x
7.2
6
2.2
FR400-0028
28
14.29
FR400-0115
115
3.48
Part
No.
+1 814.474.1571 • eis.apitech.com/magnetics
US FR SERIES, 60 Hz
TOROIDAL POWER TRANSFORMERS
60 Hz, 120 V US FR Series
+1 814.474.1571 • eis.apitech.com/magnetics
Max.
Secondary Load Load
Total Voltage
Dimen.
Power Voltage Current
Weight Regulation
ODxHT
VA
V
V
lbs
%
Inches*
FR102-0115
115
8.69
FR102-2018
2x18 27.77
FR102-2024
2x24 20.84
6.8
FR102-2028
1000
2x28 17.85
x
15.9
4
2.7
FR102-2048
2x48 10.41
FR102-2575
2x57.5 8.69
FR102-2115
2x115 4.35
FR122-0115
115
10.43
FR122-2018
2x18 33.33
FR122-2024
2x24
25
7.0
FR122-2028
1200
2x28 21.42
x
18
4
2.9
FR122-2048
2x48
12.5
FR122-2575
2x57.5 10.43
FR122-2115
2x115 5.21
FR182-0115
115
15.65
FR182-2028
2x28 32.14
7.5
FR182-2048
1800
2x48 18.75
x
25
3
3.5
FR182-2575
2x57.5 15.65
FR182-2115
2x115 7.82
FR242-0115
115
20.86
7.5
FR242-2048
2x48
25
2400
x
33
3
FR242-2575
2x57.5 20.86
4.5
FR242-2115
2x115 10.43
10.5
FR482-2115
4800
2x115 10.43
x
61
2
4.4
Part
No.
* Semi Epoxy Molded, Add 0.20" O.D. & 0.09" Ht. Full Epoxy Molded,
Add 0.20" O.D. & Ht.
Notes: Mechanical dimensions and electrical data accurate to within ±3%.
Important Notes:
1.All transformers have been designed for 50/60 Hz
2.60 Hz to 400 Hz designs available upon request
3.Custom designs to customer specs are available
4.100% electrostatic shielding available on all
transformers with a small power derating
5.Magnetic shielding & lower magnetic leakage
designs for sensitive areas such as computer
& audio equipment, are available on all transformers
6.Low profile designs are available upon request
7.API can machine and wind toroids in excess of
50" dia. & 2000 lbs
PT17
Toroidal Power Transformers
Max.
Secondary Load Load
Total Voltage
Dimen.
Power Voltage Current
Weight Regulation
ODxHT
VA
V
V
lbs
%
Inches*
FR400-2009
2x9
22.22
FR400-2012
2x12 16.67
FR400-2015
2x15 13.33
FR400-2018
2x18 11.11
5.2
FR400-2024
400
2x24
8.33
x
7.2
6
2.2
FR400-2028
2x28
7.14
FR400-2048
2x48
4.17
FR400-2575
2x57.5 3.48
FR400-2115
2x115 1.74
FR500-0015
15
33.34
FR500-0018
18
27.78
FR500-0024
24
20.84
FR500-0028
28
17.86
FR500-0115
115
4.35
FR500-2009
2x9
27.78
5.5
FR500-2012
2x12 20.84
500
x
8.2
6
FR500-2015
2x15 16.66
2.3
FR500-2018
2x18 13.89
FR500-2024
2x24 10.41
FR500-2028
2x28
8.93
FR500-2048
2x48
5.21
FR500-2575
2x57.5 4.35
FR500-2115
2x115 2.18
FR600-0018
18
33.33
FR600-0024
24
25
FR600-0028
28
21.42
FR600-0115
115
5.21
FR600-2009
2x9
33.33
FR600-2012
2x12
25
5.7
FR600-2015
2x15
20
600
x
9.6
5
2.5
FR600-2018
2x18 16.66
FR600-2024
2x24
12.5
FR600-2028
2x28 10.71
FR600-2048
2x48
6.25
FR600-2575
2x57.5 5.21
FR600-2115
2x115
2.6
FR750-0024
24
31.25
FR750-0028
28
26.79
FR750-0115
115
6.52
FR750-2012
2x12 31.25
FR750-2015
2x15
25
6.0
FR750-2018
750
2x18 20.83
x
11.6
5
2.7
FR750-2024
2x24 15.63
FR750-2028
2x28 13.39
FR750-2048
2x48
7.81
FR750-2575
2x57.5 6.52
FR750-2115
2x115 3.26
FR900-0028
28
32.14
FR900-0115
115
7.82
FR900-2015
2x15
30
FR900-2018
2x18
25
6.4
900
x
14.3
4
FR900-2024
2x24 18.75
2.8
FR900-2028
2x28 16.07
FR900-2048
2x48
9.37
FR900-2575
2x57.5 7.82
FR900-2115
2x115 3.91
Part
No.
4: White/Red
3: Red
S&T .50˝
A
.60
2.2
A
12
MILITARY DR SERIES, 4006:Hz
Red
TOROIDAL POWER TRANSFORMERS
5: Red
.50˝
.50˝
12 400 Hz 115-230 V Military12
DR Series
Dimensions and Construction
Dimensions in inches
1.46
Black
Section A-A
208 VAC
400 Hz.
White
Red
3.25
24 VAC
2.08 AMP
1: Black
0.010˝
Nomex
Base
Washer
2: White
White/Red
4: White/Red
3: Red
S&T .50˝
S&T .50˝
12
12
.60
2.2
1.1
Toroidal Power Transformers
A
Black
115VAC
400 Hz.
Brown
Blue
115 VAC
400 Hz.
Red
28 VAC
8.93 AMP
White/Red
White
208 VAC
400 Hz.
.50˝
12
Max.
Secondary Load Load
Total Voltage
Dimen.
Power Voltage Voltage
Weight Regulation
ODxHT
VA
V
V
lbs
%
Inches*
DR2R5-0002
2
1.25
DR2R5-0003
3
0.833
DR2R5-0005
5
0.5
DR2R5-0008
8
0.313
DR2R5-0012
12
0.208
DR2R5-0015
15
0.167
DR2R5-0018
18
0.139
DR2R5-0021
21
0.119
DR2R5-0024
24
0.104
DR2R5-0028
28
0.089
DR2R5-0031
31
0.081
1.14
DR2R5-0040
2.5
40
0.063
x
0.09
3
0.52
DR2R5-0048
48
0.052
DR2R5-0056
56
0.045
DR2R5-0064
64
0.039
DR2R5-0100
100
0.025
DR2R5-0115
115
0.022
DR2R5-0120
120
0.021
DR2R5-0208
208
0.012
DR2R5-0220
220
0.011
DR2R5-0230
230
0.011
DR2R5-0240
240
0.01
DR2R5-0270
270
0.009
PT18
A
24 VAC
2.08 AMP
White/Red 6: Red
5: Red
White
.50˝
12
1.46
Section A-A
Part
No.
Red
Black
1: Black
2: Brown
3: Blue
4: White
3.25
0.010˝ Nomex
Base Washer
Max.
Secondary Load Load
Total Voltage
Dimen.
Power Voltage Voltage
Weight Regulation
ODxHT
VA
V
V
lbs
%
Inches*
DR2R5-2002
2x2
0.625
DR2R5-2003
2x3 0.4167
DR2R5-2005
2x5
0.25
DR2R5-2008
2x8 0.1563
DR2R5-2012
2x12 0.1042
DR2R5-2015
2x15 0.0833
DR2R5-2018
2x18 0.0694
DR2R5-2021
2x21 0.0595
Black
DR2R5-2024
2x24 0.0521
115VAC
DR2R5-2028
2x28 0.0446
400 Hz.
Red
DR2R5-2031
2x31 0.0403 1.14
Brown 2.5
28 VAC x
DR2R5-2040
2x40 0.0313
0.09
3
8.93 AMP
0.52
DR2R5-2048
2x48 0.026
Blue
DR2R5-2056
2x56 0.0223
White/Red
115 VAC
DR2R5-2064
2x64 0.0195
400 Hz.
DR2R5-2100
2x100 0.0125
White
DR2R5-2115
2x115 0.0109
DR2R5-2120
2x120 0.0104
DR2R5-2208
2x208 0.006
DR2R5-2220
2x220 0.0057
DR2R5-2230
2x230 0.0054
DR2R5-2240
2x240 0.0052
DR2R5-2270
2x270 0.0046
Part
No.
+1 814.474.1571 • eis.apitech.com/magnetics
MILITARY DR SERIES, 400 Hz
TOROIDAL POWER TRANSFORMERS
400 Hz 115-230 V Military DR Series
+1 814.474.1571 • eis.apitech.com/magnetics
Max.
Secondary Load Load
Total Voltage
Dimen.
Power Voltage Voltage
Weight Regulation
ODxHT
VA
V
V
lbs
%
Inches*
DR010-0048
48
0.208
DR010-0056
56
0.179
DR010-0064
64
0.156
DR010-0100
100
0.1
DR010-0115
115
0.087
DR010-0120
120
0.083
DR010-0208
208
0.048
DR010-0220
220
0.045
DR010-0230
230
0.043
DR010-0240
240
0.042
DR010-0270
270
0.037
DR010-2002
2x2
2.5
DR010-2003
2x3 1.6667
DR010-2010
2x5
1
DR010-2008
2x8
0.625
DR010-2012
2x12 0.4167
1.53
DR010-2015
2x15 0.3333
10
x
0.18
5
DR010-2018
2x18 0.2778
0.53
DR010-2021
2x21 0.2381
DR010-2024
2x24 0.2083
DR010-2028
2x28 0.1786
DR010-2031
2x31 0.1613
DR010-2040
2x40 0.125
DR010-2048
2x48 0.1042
DR010-2056
2x56 0.0893
DR010-2064
2x64 0.0781
DR010-2100
2x100 0.05
DR010-2115
2x115 0.0435
DR010-2120
2x120 0.0417
DR010-2208
2x208 0.024
DR010-2220
2x220 0.0227
DR010-2230
2x230 0.0217
DR010-2240
2x240 0.0208
DR010-2270
2x270 0.0185
DR025-0002
2
12.5
DR025-0003
3
8.333
DR025-0010
5
5
DR025-0008
8
3.125
DR025-0012
12
2.083
DR025-0015
15
1.667
DR025-0018
18
1.389
DR025-0021
21
1.19
DR025-0024
24
1.042
DR025-0028
28
0.893
DR025-0031
31
0.806
1.70
DR025-0040
40
0.625
25
x
0.27
5
DR025-0048
48
0.521
0.70
DR025-0056
56
0.446
DR025-0064
64
0.391
DR025-0100
100
0.25
DR025-0115
115
0.217
DR025-0120
120
0.208
DR025-0208
208
0.12
DR025-0220
220
0.114
DR025-0230
230
0.109
DR025-0240
240
0.104
DR025-0270
270
0.093
DR025-2002
2x2
6.25
Part
No.
PT19
Toroidal Power Transformers
Max.
Secondary Load Load
Total Voltage
Dimen.
Power Voltage Voltage
Weight Regulation
ODxHT
VA
V
V
lbs
%
Inches*
DR005-0002
2
2.5
DR005-0003
3
1.667
DR005-0005
5
1
DR005-0008
8
0.625
DR005-0012
12
0.417
DR005-0015
15
0.333
DR005-0018
18
0.278
DR005-0021
21
0.238
DR005-0024
24
0.208
DR005-0028
28
0.179
DR005-0031
31
0.161
DR005-0040
40
0.125
DR005-0048
48
0.104
DR005-0056
56
0.089
DR005-0064
64
0.078
DR005-0100
100
0.05
DR005-0115
115
0.043
DR005-0120
120
0.042
DR005-0208
208
0.024
DR005-0220
220
0.023
DR005-0230
230
0.022
DR005-0240
240
0.021
1.26
DR005-0270
270
0.019
5
x
0.12
5
DR005-2002
2x2
1.25
0.52
DR005-2003
2x3 0.8333
DR005-2005
2x5
0.5
DR005-2008
2x8 0.3125
DR005-2012
2x12 0.2083
DR005-2015
2x15 0.1667
DR005-2018
2x18 0.1389
DR005-2021
2x21 0.119
DR005-2024
2x24 0.1042
DR005-2028
2x28 0.0893
DR005-2031
2x31 0.0806
DR005-2040
2x40 0.0625
DR005-2048
2x48 0.0521
DR005-2056
2x56 0.0446
DR005-2064
2x64 0.0391
DR005-2100
2x100 0.025
DR005-2115
2x115 0.0217
DR005-2120
2x120 0.0208
DR005-2208
2x208 0.012
DR005-2220
2x220 0.0114
DR005-2230
2x230 0.0109
DR005-2240
2x240 0.0104
DR005-2270
2x270 0.0093
DR010-0002
2
5
DR010-0003
3
3.333
DR010-0010
5
2
DR010-0008
8
1.25
DR010-0012
12
0.833
1.53
DR010-0015
15
0.667
10
x
0.18
5
DR010-0018
18
0.556
0.53
DR010-0021
21
0.476
DR010-0024
24
0.417
DR010-0028
28
0.357
DR010-0031
31
0.323
DR010-0040
40
0.25
Part
No.
MILITARY DR SERIES, 400 Hz
TOROIDAL POWER TRANSFORMERS
400 Hz 115-230 V Military DR Series
Max.
Secondary Load Load
Total Voltage
Dimen.
Power Voltage Voltage
Weight Regulation
ODxHT
VA
V
V
lbs
%
Inches*
DR025-2003
2x3 4.1667
DR025-2010
2x5
2.5
DR025-2008
2x8 1.5625
DR025-2012
2x12 1.0417
DR025-2015
2x15 0.8333
DR025-2018
2x18 0.6944
DR025-2021
2x21 0.5952
DR025-2024
2x24 0.5208
DR025-2028
2x28 0.4464
DR025-2031
2x31 0.4032
1.70
DR025-2040
2x40 0.3125
x
0.27
5
25
DR025-2048
2x48 0.2604
0.70
DR025-2056
2x56 0.2232
DR025-2064
2x64 0.1953
DR025-2100
2x100 0.125
DR025-2115
2x115 0.1087
DR025-2120
2x120 0.1042
DR025-2208
2x208 0.0601
DR025-2220
2x220 0.0568
DR025-2230
2x230 0.0543
DR025-2240
2x240 0.0521
DR025-2270
2x270 0.0463
DR050-0002
2
25
DR050-0003
3
16.667
DR050-0010
5
10
DR050-0008
8
6.25
DR050-0012
12
4.167
DR050-0015
15
3.333
DR050-0018
18
2.778
DR050-0021
21
2.381
DR050-0024
24
2.083
DR050-0028
28
1.786
DR050-0031
31
1.613
DR050-0040
40
1.25
DR050-0048
48
1.042
DR050-0056
56
0.893
DR050-0064
64
0.781
DR050-0100
100
0.5
DR050-0115
115
0.435
1.96
DR050-0120
120
0.417
50
x
0.45
4
0.84
DR050-0208
208
0.24
DR050-0220
220
0.227
DR050-0230
230
0.217
DR050-0240
240
0.208
DR050-0270
270
0.185
DR050-2002
2x2
12.5
DR050-2003
2x3 8.3333
DR050-2010
2x5
5
DR050-2008
2x8
3.125
DR050-2012
2x12 2.0833
DR050-2015
2x15 1.6667
DR050-2018
2x18 1.3889
DR050-2021
2x21 1.1905
DR050-2024
2x24 1.0417
DR050-2028
2x28 0.8929
DR050-2031
2x31 0.8065
DR050-2040
2x40 0.625
Part
No.
Toroidal Power Transformers
PT20
Max.
Secondary Load Load
Total Voltage
Dimen.
Power Voltage Voltage
Weight Regulation
ODxHT
VA
V
V
lbs
%
Inches*
DR050-2048
2x48 0.5208
DR050-2056
2x56 0.4464
DR050-2064
2x64 0.3906
DR050-2100
2x100 0.25
DR050-2115
2x115 0.2174 1.96
DR050-2120
50
2x120 0.2083
x
0.45
4
DR050-2208
2x208 0.1202 0.84
DR050-2220
2x220 0.1136
DR050-2230
2x230 0.1087
DR050-2240
2x240 0.1042
DR050-2270
2x270 0.0926
DR100-0010
5
20
DR100-0008
8
12.5
DR100-0012
12
8.3333
DR100-0015
15
6.6667
DR100-0018
18
5.5556
DR100-0021
21
4.7619
DR100-0024
24
4.1667
DR100-0028
28
3.5714
DR100-0031
31
3.2258
DR100-0040
40
2.5
DR100-0048
48
2.0833
DR100-0056
56
1.7857
DR100-0064
64
1.5625
DR100-0100
100
1
DR100-0115
115 0.8696
DR100-0120
120 0.8333
DR100-0208
208 0.4808
DR100-0220
220 0.4545
DR100-0230
230 0.4348
DR100-0240
240 0.4167
DR100-0270
270 0.3704
2.48
DR100-2002
2x2
25
100
x
0.75
4
DR100-2003
2x3 16.667
0.86
DR100-2010
2x5
10
DR100-2008
2x8
6.25
DR100-2012
2x12 4.1667
DR100-2015
2x15 3.3333
DR100-2018
2x18 2.7778
DR100-2021
2x21 2.381
DR100-2024
2x24 2.0833
DR100-2028
2x28 1.7857
DR100-2031
2x31 1.6129
DR100-2040
2x40
1.25
DR100-2048
2x48 1.0417
DR100-2056
2x56 0.8929
DR100-2064
2x64 0.7813
DR100-2100
2x100
0.5
DR100-2115
2x115 0.4348
DR100-2120
2x120 0.4167
DR100-2208
2x208 0.2404
DR100-2220
2x220 0.2273
DR100-2230
2x230 0.2174
DR100-2240
2x240 0.2083
DR100-2270
2x270 0.1852
Part
No.
+1 814.474.1571 • eis.apitech.com/magnetics
MILITARY DR SERIES, 400 Hz
TOROIDAL POWER TRANSFORMERS
400 Hz 115-230 V Military DR Series
+1 814.474.1571 • eis.apitech.com/magnetics
Max.
Secondary Load Load
Total Voltage
Dimen.
Power Voltage Voltage
Weight Regulation
ODxHT
VA
V
V
lbs
%
Inches*
DR500-2012
2x12 20.833
DR500-2015
2x15 16.667
DR500-2018
2x18 13.889
DR500-2021
2x21 11.905
DR500-2024
2x24 10.417
DR500-2028
2x28 8.9286
DR500-2031
2x31 8.0645
DR500-2040
2x40
6.25
DR500-2048
2x48 5.2083 3.80
DR500-2056
500
2x56 4.4643
x
3.2
1.50
DR500-2064
2x64 3.9063 1.55
DR500-2100
2x100
2.5
DR500-2115
2x115 2.1739
DR500-2120
2x120 2.0833
DR500-2208
2x208 1.2019
DR500-2220
2x220 1.1364
DR500-2230
2x230 1.087
DR500-2240
2x240 1.0417
DR500-2270
2x270 0.9259
DR102-0040
40
25
DR102-0048
48
20.833
DR102-0056
56
17.857
DR102-0064
64
15.625
DR102-0100
100
10
DR102-0115
115 8.6957
DR102-0120
120 8.3333
DR102-0208
208 4.8077
DR102-0220
220 4.5455
DR102-0230
230 4.3478
DR102-0240
240 4.1667
DR102-0270
270 3.7037
DR102-2021
2x21 23.81
4.53
DR102-2024
2x24 20.833
1000
x
5.7
1.30
DR102-2028
2x28 17.857
1.90
DR102-2031
2x31 16.129
DR102-2040
2x40
12.5
DR102-2048
2x48 10.417
DR102-2056
2x56 8.9286
DR102-2064
2x64 7.8125
DR102-2100
2x100
5
DR102-2115
2x115 4.3478
DR102-2120
2x120 4.1667
DR102-2208
2x208 2.4038
DR102-2220
2x220 2.2727
DR102-2230
2x230 2.1739
DR102-2240
2x240 2.0833
DR102-2270
2x270 1.8519
DR122-0048
48
25
DR122-0056
56
21.429
DR122-0064
64
18.75
4.91
DR122-0100
100
12
1200
x
7.2
1.20
DR122-0115
115 10.435
2.16
DR122-0120
120
10
DR122-0208
208 5.7692
DR122-0220
220 5.4545
Part
No.
PT21
Toroidal Power Transformers
Max.
Secondary Load Load
Total Voltage
Dimen.
Power Voltage Voltage
Weight Regulation
ODxHT
VA
V
V
lbs
%
Inches*
DR250-0012
12
20.833
DR250-0015
15
16.667
DR250-0018
18
13.889
DR250-0021
21
11.905
DR250-0024
24
10.417
DR250-0028
28
8.9286
DR250-0031
31
8.0645
DR250-0040
40
6.25
DR250-0048
48
5.2083
DR250-0056
56
4.4643
DR250-0064
64
3.9063
DR250-0100
100
2.5
DR250-0115
115 2.1739
DR250-0120
120 2.0833
DR250-0208
208 1.2019
DR250-0220
220 1.1364
DR250-0230
230
1.087
DR250-0240
240 1.0417
DR250-0270
270 0.9259
2.95
DR250-2010
2x5
25
250
x
1.63
2
DR250-2008
2x8 15.625
1.33
DR250-2012
2x12 10.417
DR250-2015
2x15 8.3333
DR250-2018
2x18 6.9444
DR250-2021
2x21 5.9524
DR250-2024
2x24 5.2083
DR250-2028
2x28 4.4643
DR250-2031
2x31 4.0323
DR250-2040
2x40 3.125
DR250-2048
2x48 2.6042
DR250-2056
2x56 2.2321
DR250-2064
2x64 1.9531
DR250-2100
2x100 1.25
DR250-2115
2x115 1.087
DR250-2120
2x120 1.0417
DR250-2208
2x208 0.601
DR250-2220
2x220 0.5682
DR250-2230
2x230 0.5435
DR250-2240
2x240 0.5208
DR250-2270
2x270 0.463
DR500-0021
21
23.81
DR500-0024
24
20.833
DR500-0028
28
17.857
DR500-0031
31
16.129
DR500-0040
40
12.5
DR500-0048
48
10.417
DR500-0056
56
8.9286
3.80
DR500-0064
64
7.8125
3.2
1.50
500
x
DR500-0100
100
5
1.55
DR500-0115
115 4.3478
DR500-0120
120 4.1667
DR500-0208
208 2.4038
DR500-0220
220 2.2727
DR500-0230
230 2.1739
DR500-0240
240 2.0833
DR500-0270
270 1.8519
Part
No.
MILITARY DR SERIES, 400 Hz
TOROIDAL POWER TRANSFORMERS
400 Hz 115-230 V Military DR Series
Max.
Secondary Load Load
Total Voltage
Dimen.
Power Voltage Voltage
Weight Regulation
ODxHT
VA
V
V
lbs
%
Inches*
DR122-0230
230 5.2174
DR122-0240
240
5
DR122-0270
270 4.4444
DR122-2024
2x24
25
DR122-2028
2x28 21.429
DR122-2031
2x31 19.355
DR122-2040
2x40
15
DR122-2048
2x48
12.5
4.91
DR122-2056
2x56 10.714
1200
x
7.2
1.20
DR122-2064
2x64 9.375
2.16
DR122-2100
2x100
6
DR122-2115
2x115 5.2174
DR122-2120
2x120
5
DR122-2208
2x208 2.8846
DR122-2220
2x220 2.7273
DR122-2230
2x230 2.6087
DR122-2240
2x240
2.5
DR122-2270
2x270 2.2222
DR182-0100
100
18
DR182-0115
115 15.652
DR182-0120
120
15
DR182-0208
208 8.6538
DR182-0220
220 8.1818
DR182-0230
230 7.8261
DR182-0240
240
7.5
DR182-0270
270 6.6667
DR182-2040
2x40
22.5
5.61
DR182-2048
2x48 18.75
1800
x
11.4
1.00
DR182-2056
2x56 16.071
2.61
DR182-2064
2x64 14.063
DR182-2100
2x100
9
DR182-2115
2x115 7.8261
DR182-2120
2x120
7.5
DR182-2208
2x208 4.3269
DR182-2220
2x220 4.0909
DR182-2230
2x230 3.913
DR182-2240
2x240 3.75
DR182-2270
2x270 3.3333
DR252-0100
100
25
DR252-0115
115 21.739
DR252-0120
120 20.833
DR252-0208
208 12.019
DR252-0220
220 11.364
DR252-0230
230
10.87
DR252-0240
240 10.417
DR252-0270
270 9.2593
DR252-2048
2x48 26.042 5.85
DR252-2056 2500
2x56 22.321
x
13
0.80
DR252-2064
2x64 19.531 2.85
DR252-2100
2x100 12.5
DR252-2115
2x115 10.87
DR252-2120
2x120 10.417
DR252-2208
2x208 6.0096
DR252-2220
2x220 5.6818
DR252-2230
2x230 5.4348
DR252-2240
2x240 5.2083
DR252-2270
2x270 4.6296
Part
No.
Toroidal Power Transformers
PT22
Max.
Secondary Load Load
Total Voltage
Dimen.
Power Voltage Voltage
Weight Regulation
ODxHT
VA
V
V
lbs
%
Inches*
DR362-0100
100
36
DR362-0115
115 31.304
DR362-0120
120
30
DR362-0208
208 17.308
DR362-0220
220 16.364
DR362-0230
230 15.652
DR362-0240
240
15
DR362-0270
270 13.333
DR362-2048
2x48
37.5
6.69
DR362-2056 3600
2x56 32.143
x
21
0.80
DR362-2064
2x64 28.125 3.32
DR362-2100
2x100
18
DR362-2115
2x115 15.652
DR362-2120
2x120
15
DR362-2208
2x208 8.6538
DR362-2220
2x220 8.1818
DR362-2230
2x230 7.8261
DR362-2240
2x240
7.5
DR362-2270
2x270 6.6667
DR502-0100
100
50
DR502-0115
115 43.478
DR502-0120
120 41.667
DR502-0208
208 24.038
DR502-0220
220 22.727
DR502-0230
230 21.739
DR502-0240
240 20.833
DR502-0270
270 18.519
DR502-2048
2x48 52.083
8.1
DR502-2056 5000
2x56 44.643
x
27
0.70
3.1
DR502-2064
2x64 39.063
DR502-2100
2x100
25
DR502-2115
2x115 21.739
DR502-2120
2x120 20.833
DR502-2208
2x208 12.019
DR502-2220
2x220 11.364
DR502-2230
2x230 10.87
DR502-2240
2x240 10.417
DR502-2270
2x270 9.2593
100
75
DR752-0100
DR752-0115
115 65.217
DR752-0120
120
62.5
DR752-0208
208 36.058
DR752-0220
220 34.091
DR752-0230
230 32.609
DR752-0240
240
31.25
DR752-0270
270 27.778
DR752-2048
2x48 78.125
7.7
DR752-2056 7500
2x56 66.964
x
38
0.60
4.7
DR752-2064
2x64 58.594
DR752-2100
2x100 37.5
DR752-2115
2x115 32.609
DR752-2120
2x120 31.25
DR752-2208
2x208 18.029
DR752-2220
2x220 17.045
DR752-2230
2x230 16.304
DR752-2240
2x240 15.625
DR752-2270
2x270 13.889
Part
No.
+1 814.474.1571 • eis.apitech.com/magnetics
MILITARY DR SERIES, 400 Hz
TOROIDAL POWER TRANSFORMERS
Max.
Secondary Load Load
Total Voltage
Dimen.
Power Voltage Voltage
Weight Regulation
ODxHT
VA
V
V
lbs
%
Inches*
DR103-0100
100
100
DR103-0115
115 86.957
DR103-0120
120 83.333
DR103-0208
208 48.077
DR103-0220
220 45.455
DR103-0230
230 43.478
DR103-0240
240 41.667
DR103-0270
270 37.037
DR103-2048
2x48 104.17
9.9
DR103-2056 10,000
2x56 89.286
x
58
0.50
4.2
DR103-2064
2x64 78.125
DR103-2100
2x100
50
DR103-2115
2x115 43.478
DR103-2120
2x120 41.667
DR103-2208
2x208 24.038
DR103-2220
2x220 22.727
DR103-2230
2x230 21.739
DR103-2240
2x240 20.833
DR103-2270
2x270 18.519
DR123-0100
100
120
DR123-0115
115 104.35
DR123-0120
120
100
DR123-0208
208 57.692
DR123-0220
220 54.545
DR123-0230
230 52.174
DR123-0240
240
50
DR123-0270
270 44.444
DR123-2048
2x48
125
9.9
DR123-2056 12,000
2x56 107.14
x
70
0.50
4.9
DR123-2064
2x64 93.75
DR123-2100
2x100
60
DR123-2115
2x115 52.174
DR123-2120
2x120
50
DR123-2208
2x208 28.846
DR123-2220
2x220 27.273
DR123-2230
2x230 26.087
DR123-2240
2x240
25
DR123-2270
2x270 22.222
Part
No.
Important Notes:
1.All transformers have been designed for 50/60 Hz
2.60 Hz to 400 Hz designs available upon request
3.Custom designs to customer specs are available
4.100% electrostatic shielding available on all
transformers with a small power derating
5.Magnetic shielding & lower magnetic leakage
designs for sensitive areas such as computer
& audio equipment, are available on all transformers
6.Low profile designs are available upon request
7.API can machine and wind toroids in excess of
50" dia. & 2000 lbs
Toroidal Power Transformers
400 Hz 115-230 V Military DR Series
* Semi Epoxy Molded, Add 0.20" O.D. & 0.09" Ht. Full Epoxy Molded,
Add 0.20" O.D. & Ht.
Notes: Mechanical dimensions and electrical data accurate to within ±3%.
+1 814.474.1571 • eis.apitech.com/magnetics
PT23
PRECISION 400 Hz
TOROIDAL POWER TRANSFORMERS
Dimensions and Construction
Dimensions in inches
°T
yp.
Precision Toroidal Power Transformers
400 Hz
• Primary voltage: 115 ± 15 Volts, 230 ± 30 Volts
30
• Operating frequency: 400Hz ± 20Hz
• Insulation voltage: 1500 VAC
A
• Molded for P.C. mounting
• 400 Hz power transformers feature low profiles and
are designed for standard regulator chips using full
wave bridge center tap or full wave bridge
• Any size 5VA to 15,000VA. These transformers
are all machine made to achieve high consistency
and reliability.
HT
N
F
OD
Toroidal Power Transformers
Precision 400 Hz
Part
No.
6490
6491
6492
6493
6494
6495
6470
6471
6472
6473
6474
6475
6450
6451
6452
6453
6454
6455
6430
6431
6432
6433
6434
6435
6410
6411
6412
6413
6414
6415
PT24
Volt.
Amps
100
50
25
10
5
Dimensions*
Volts
Load
Rms
Current
Amp
Rms
Volts
N/L
Rms
A
2x5
2x10
2x12
2x18
2x24
2x28
2x5
2x10
2x12
2x18
2x24
2x28
2x5
2x10
2x12
2x16
2x24
2x28
2x5
2x10
2x12
2x18
2x24
2x28
2x5
2x10
2x12
2x18
2x24
2x28
10
5
4.2
2.8
2.1
1.78
5
2.5
2.1
1.4
1.05
0.89
2.5
1.125
1.05
0.7
0.5
0.45
1
0.5
0.42
0.28
0.208
0.18
0.5
0.25
0.21
0.14
0.104
0.09
2x5.9
2x11.8
2x14
2x21.2
2x86.4
2x33
2x5.5
2x11
2x12.8
2x19
2x25.5
2x30
2x5.5
2x11.2
2x13
2x19.6
2x26
2x30.4
2x5.3
2x10.8
2x12.8
2x19
2x25.5
2x31
2x5.3
2x10.8
2x12.8
2x19
2x25.5
2x30
2.8
2.8
2.8
2.8
2.8
2.8
2.55
2.55
2.55
2.55
2.55
2.55
2.18
2.18
2.18
2.18
2.18
2.18
1.8
1.8
1.8
1.8
1.8
1.8
1.67
1.67
1.67
1.67
1.67
1.67
OD
Nom
3
3
3
3
3
3
2.75
2.75
2.75
2.75
2.75
2.75
2.375
2.375
2.375
2.375
2.375
2.375
2
2
2
2
2
2
1.875
1.875
1.875
1.875
1.875
1.875
HT
Inch
1
1
1
1
1
1
1
1
1
1
1
1
0.75
0.75
0.75
0.75
0.75
0.75
0.75
0.75
0.75
0.75
0.75
0.75
0.75
0.75
0.75
0.75
0.75
0.75
* Semi Epoxy Molded, Add 0.20" O.D. & 0.09" Ht. Full Epoxy Molded,
Add 0.20" O.D. & Ht.
Notes: Mechanical dimensions and electrical data accurate to within ±3%.
Important Notes:
1.All transformers have been designed for 50/60 Hz
2.60 Hz to 400 Hz designs available upon request
3.Custom designs to customer specs are available
4.100% electrostatic shielding available on all
transformers with a small power derating
5.Magnetic shielding & lower magnetic leakage
designs for sensitive areas such as computer
& audio equipment, are available on all transformers
6.Low profile designs are available upon request
7.API can machine and wind toroids in excess of
50" dia. & 2000 lbs
+1 814.474.1571 • eis.apitech.com/magnetics