Current Transformers
Stangenes Current Transformers have been constructed in so many shapes and sizes that it is impossible to show them all at once. The following descriptions represent broad categories, which can be reconfigured almost infinitely.
For measurement of pulse and AC currents over a wide range of amplitudes, pulse lengths, and frequencies.
Stangenes Current Transformers have:
- Complete isolation from the circuit to be measured (no ground currents)
- Shielded construction
- Internal 50 ohm termination for coaxial cable matching
- High accuracy (±0.5%)
- A variety of hole sizes to fit most conductors and voltages
Wide Band Current Transformers
Accuracy: ±0.5% initial pulse response for all models. Specifications for transformer ratio, accuracy, and droop are at open circuit. Rise time and bandwith are when terminated with 50 ohms. All models are electrostatically shielded and have a 50 ohm output impedance.
Model
No. |
Output
(volt/amp)
Accuracy
±0.5% |
Inner
Diameter
(inches) |
Max.
Current
(amperes)
Peak |
Max.
Current
(amperes)
Rms |
Square
Pulse
Rise Time
(nanosec) |
Square
Pulse
Droop
(%/µsec) |
Square
Pulse
IT max.
(amp.sec) |
| 0.5-1.0W |
1.0 |
0.5 |
500 |
5 |
10 |
0.1 |
0.002 |
| 0.5-0.1W |
0.1 |
0.5 |
5 k |
50 |
20 |
0.001 |
0.2 |
| 0.5-0.1WA |
0.1 |
0.5 |
5 k |
50 |
20 |
0.05 |
0.25 |
| 2-1.0W |
1.0 |
2.0 |
500 |
7.5 |
20 |
0.08 |
0.005 |
| 2-0.5W |
0.5 |
2.0 |
1 k |
15 |
20 |
0.02 |
0.02 |
| 2-0.1W |
0.1 |
2.0 |
5 k |
65 |
20 |
0.0008 |
0.5 |
| 2-0.1WA |
0.1 |
2.0 |
10 k |
65 |
20 |
0.0006 |
0.5 |
Model
No. |
Approx.
3dB
Point
Low
(Hz) |
Approx.
3dB
Point
High
(MHz) |
I/F
(Peak
Amp/Hz) |
Notes |
Receptacle |
| 0.5-1.0W |
140 |
35 |
0.006 |
1 |
BNC Jack |
| 0.5-0.1W |
1 |
20 |
0.6 |
1 |
BNC Jack |
| 0.5-0.1WA |
100 |
20 |
1.6 |
|
BNC Jack |
| 2-1.0W |
125 |
20 |
0.017 |
1 |
BNC Jack |
| 2-0.5W |
40 |
20 |
0.07 |
1 |
BNC Jack |
| 2-0.1W |
1 |
20 |
1.5 |
1 |
BNC Jack |
| 2-0.1WA |
1 |
20 |
1.5 |
1 |
C Jack |
Notes:
- May need small bias current through secondary for maximum rating.
- Double shielded
Other standard and custom models available.
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Pulse Current Transformers
Model No. |
Output
(volt/amp)
Accuracy
±0.5% |
Inner
Diameter
(inches) |
Max.
Current
(amperes)
Peak |
Max.
Current
(amperes)
Rms |
Square
Pulse
Rise Time
(nanosec) |
Square
Pulse
Droop
(%/µsec) |
Square
Pulse
IT max.
(amp.sec) |
Notes |
| 0.5-1.0 |
1.0 |
0.5 |
500 |
7 |
10 |
0.05 |
0.002 |
1 |
| 0.5-0.1 |
0.1 |
0.5 |
5 k |
30 |
10 |
0.05 |
0.02 |
1 |
| 0.5-0.01 |
0.01 |
0.5 |
50 k |
300 |
20 |
0.0005 |
0.2 |
1 |
| 1-1.0 |
1.0 |
1.0 |
500 |
7 |
20 |
0.1 |
0.006 |
1 |
| 1-0.1 |
0.1 |
1.0 |
5 k |
30 |
20 |
0.01 |
0.06 |
1 |
| 2-1.0 |
1.0 |
2.0 |
500 |
7 |
20 |
0.05 |
0.006 |
1 |
| 2-0.1 |
0.1 |
2.0 |
5 k |
30 |
20 |
0.005 |
0.06 |
1 |
| 3-1.0 |
1.0 |
2.87 |
500 |
7 |
20 |
0.2 |
0.002 |
1 |
| 3-0.1 |
0.1 |
2.87 |
5 k |
30 |
20 |
0.35 |
0.1 |
|
| 3-0.1A |
0.1 |
2.87 |
5 k |
30 |
20 |
0.015 |
0.03 |
|
| 3-0.01 |
0.01 |
2.87 |
50 k |
300 |
100 |
0.02 |
1.0 |
|
| 3-0.002 |
0.002 |
2.87 |
200 k |
1100 |
100 |
0.005 |
5.0 |
|
| 3.5-1.0 |
1.0 |
3.50 |
500 |
7 |
50 |
0.01 |
0.03 |
1 |
| 3.5-0.1 |
0.1 |
3.50 |
5 k |
70 |
50 |
0.013 |
0.65 |
2 |
| 3.5-0.01 |
0.01 |
3.50 |
50 k |
400 |
200 |
0.002 |
22 |
2 |
Other standard and custom models available.
Notes:
- May need small bias current through secondary for maximum rating.
- Double shielded
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