Pearson Pulse Current Transformer
- Brand
- Pearson
- Origin
- United States

For AC and pulsed current measurement. Check output ratio, aperture, peak and RMS current, and frequency response together.
Key specification options
- Output (V/A)
- 1 / 0.5 / 0.25 and more
- Aperture (inch)
- 0.25 / 0.5 / 2 and more
- Peak current (A)
- 100 / 500 / 1000 and more
- Droop (%/ms)
- 200 / 90 / 80 and more
- Rise time (ns)
- 2 / 10 / 20 and more
- IT Max(amp-sec.)
- 0.004** / 0.002** / 0.005** and more
Product design
Pearson pulse current transformers surround a conductor through an aperture and provide a signal for observing AC or pulse current. Models differ in aperture and body construction. Start with conductor dimensions, measurement location and required waveform response.
Measurement and application
AC and pulse current testing involves observing how a waveform changes over time as well as its amplitude. The transformer construction, conductor arrangement and output connection all influence the measurement setup.
Selection and connections
Prepare details of the conductor, available space, waveform and oscilloscope input. Installation requirements differ between fixed and opening structures; output cables and termination should follow the instructions for the selected model.
Related models & specifications
Pearson Pulse Current Transformer
Model selection
| Model | Output (V/A) | Aperture (inch) | Peak current (A) | Droop (%/ms) | Rise time (ns) | IT Max(amp-sec.) | Maximum rms (A) | 3dB low frequency (Hz) | 3dB high frequency (MHz) | I/f(A/Hz) |
|---|---|---|---|---|---|---|---|---|---|---|
| 2877 | 1 | 0.25 | 100 | 200 | 2 | 0.004** | 2.5 | 300 | 200 | 0.0025 |
| 4100 | 1 | 0.5 | 500 | 90 | 10 | 0.002** | 5 | 140 | 35 | 0.006 |
| 2100 | 1 | 2 | 500 | 80 | 20 | 0.005** | 7.5 | 125 | 20 | 0.017 |
| 6585 | 1 | 2 | 500 | 300 | 1.5 | 0.002** | 10 | 400 | 250 | 0.008 |
| 6656 | 1 | 3.5 | 500 | 140 | 3.5 | 0.01** | 10 | 200 | 120 | 0.04 |
| 3100* | 1 | 3.5 | 500 | 40 | 50 | 0.03** | 12 | 40 | 7 | 0.1 |
| 150 | 0.5 | 2 | 1000 | 20 | 20 | 0.02** | 15 | 40 | 20 | 0.07 |
| 6595 | 0.5 | 2 | 1000 | 100 | 2.5 | 0.008** | 20 | 100 | 200 | 0.03 |
| 325* | 0.25 | 3.5 | 2000 | 100 | 30 | 0.09 | 60 | 160 | 10 | 0.6 |
| 2878 | 0.1 | 0.25 | 400 | 20 | 5 | 0.004** | 10 | 30 | 70 | 0.025 |
| 410 | 0.1 | 0.5 | 5000 | 60 | 20 | 0.25 | 50 | 120 | 20 | 1.7 |
| 411 | 0.1 | 0.5 | 5000 | 0.9 | 20 | 0.2** | 50 | 1 | 20 | 0.6 |
| 3972 | 0.1 | 1 | 5000 | 1 | 20 | 0.2 | 50 | 1 | 20 | 0.6 |
| 110 | 0.1 | 2 | 5000 | 0.8 | 20 | 0.5** | 65 | 1 | 20 | 1.5 |
| 110A↑ | 0.1 | 2 | 10000 | 0.8 | 20 | 0.5** | 65 | 1 | 20 | 1.5 |
| 6600 | 0.1 | 2 | 2000 | 15 | 5 | 0.04** | 40 | 25 | 120 | 0.12 |
| 310* | 0.1 | 3.5 | 5000 | 20 | 40 | 0.6 | 140 | 40 | 10 | 3.6 |
| 1010* | 0.1 | 10.75 | 5000 | 250 | 50 | 0.7** | 120 | 400 | 7 | 4.4 |
| 1025 | 0.025 | 2 | 20000 | 100 | 100 | 0.5 | 100 | 160 | 4 | 3 |
| 3025* | 0.025 | 3.5 | 20000 | 4 | 100 | 3 | 325 | 7 | 4 | 20 |
| 2879 | 0.01 | 0.25 | 2000 | 2 | 20 | 0.04** | 25 | 3 | 20 | 0.25 |
| 5046 | 0.01 | 0.5 | 25000 | 0.3 | 20 | 0.5** | 100 | 0.5 | 20 | 3 |
| 101 | 0.01 | 2 | 50000 | 0.1 | 100 | 2.5** | 200 | 0.25 | 4 | 12 |
| 4997 | 0.01 | 2 | 20000 | 0.3 | 25 | 1.0** | 150 | 0.5 | 15 | 3.5 |
| 301X* | 0.01 | 3.5 | 50000 | 3 | 200 | 22 | 400 | 5 | 2 | 140 |
| 1080*↑ | 0.005 | 3.5 | 200000 | 2 | 250 | 25 | 750 | 3 | 1.5 | 150 |
| 1330* | 0.005 | 3.5 | 100000 | 1 | 250 | 65 | 1400 | 0.9 | 1.5 | 400 |
| 4418 | 0.001 | 2 | 200000 | 0.05 | 200 | 6.0** | 400 | 0.7 | 2 | 40 |
| 1423* | 0.001 | 3.5 | 500000 | 0.7 | 500 | 75 | 2500 | 1 | 0.7 | 450 |
| 2093* | 0.001 | 4.75 | 500000 | 0.09 | 2000 | 1200 | 2500 | 0.15 | 0.2 | 7500 |
Pearson Clamp-On Current Transformer
Model selection
| Model | Output (V/A) | Aperture (inch) | Maximum peak current (Amps) | Droop (%/μsec.) | Rise time (nsec.) | IT Max.(A-s) | Current, rms (A) | 3dB low frequency (Hz) | 3dB high frequency (MHz) | I/f(rmsA/Hz) | I2t max |
|---|---|---|---|---|---|---|---|---|---|---|---|
| 8585C | 1 | 0.5 | 500 | 1 | 2 | 0.003 | 5 | 1500 | 200 | 0.01 | 5 |
| 4100C | 1 | 0.5 | 500 | 1 | 15 | 0.0015 | 5 | 1500 | 25 | 0.008 | 150 |
| 8590C | 1 | 1 | 500 | 0.7 | 2.5 | 0.002 | 5 | 1000 | 150 | 0.01 | 25 |
| 7790 | 1 | 1 | 500 | 1 | 15 | 0.002 | 5 | 1500 | 25 | 0.01 | 150 |
| 4688 | 1 | 2 | 500 | 0.4 | 12 | 0.005 | 15 | 600 | 30 | 0.03 | 150 |
| 8705C↑ | 1 | 2 | 15 | 4 | 1 | 0.0006 | 4 | 1500 | 400 | 0.002 | 0.02 |
| 7805 | 1 | 4 | 500 | 0.7 | 25 | 0.004 | 15 | 1000 | 25 | 0.02 | 150 |
| 7760 | 1 | 6 | 500 | 0.5 | 50 | 0.005 | 20 | 750 | 7 | 0.03 | 350 |
| 5101 | 0.5 | 2 | 1000 | 0.1 | 20 | 0.02 | 25 | 150 | 18 | 0.08 | 700 |
| 5949↑ | 0.5 | 4 | 1000 | 0.1 | 30 | 0.02 | 30 | 150 | 12 | 0.08 | 700 |
| 411C | 0.1 | 0.5 | 5000 | 0.015 | 20 | 0.15 | 50 | 25 | 20 | 0.7 | 18000 |
| 7795 | 0.1 | 1 | 5000 | 0.015 | 25 | 0.15 | 60 | 25 | 15 | 0.8 | 18000 |
| 3525 | 0.1 | 2 | 5000 | 0.004 | 25 | 0.5 | 100 | 6 | 15 | 2.5 | 18000 |
| 7810 | 0.1 | 4 | 5000 | 0.007 | 50 | 0.4 | 150 | 10 | 7 | 2 | 18000 |
| 7655 | 0.1 | 6 | 5000 | 0.007 | 100 | 0.4 | 175 | 10 | 4 | 2 | 35000 |
| 5008C | 0.01 | 0.5 | 50000 | 0.005 | 150 | 1 | 150 | 7.5 | 3 | 4.2 | 250000 |
| 7800 | 0.01 | 1 | 50000 | 0.003 | 175 | 0.8 | 125 | 5 | 2 | 4 | 140000 |
| 4160 | 0.01 | 2 | 50000 | 0.001 | 200 | 2.5 | 300 | 1.5 | 2 | 15 | 1000000 |
| 7815 | 0.01 | 4 | 50000 | 0.001 | 200 | 3 | 400 | 1.5 | 2 | 15 | 2000000 |
| 7450 | 0.01 | 6 | 50000 | 0.001 | 250 | 3 | 400 | 1.5 | 1.5 | 12 | 2000000 |
| 5664 | 0.001 | 2 | 200000 | 0.00025 | 250 | 8 | 500 | 0.4 | 1.5 | 50 | 1000000 |
Pearson Custom Current Transformer
Custom model specifications · Group 1
| Model | Output (V/A) | Aperture (inch) | Peak current (Amps) | Droop (%/ms) | Usable rise time (ns) | IT Max.(A-sec.) | Maximum RMS current (A) | 3dB low frequency (Hz) | 3dB high frequency (MHz) | I/f(A/Hz) |
|---|---|---|---|---|---|---|---|---|---|---|
| 5753 | 10 | 2.0 | 50 | 700 | 150 | 0.0005 | 4 | 1000 | 3 | 0.004 |
| 5834 | 10 | 2.0 | 50 | 300 | 350 | 0.001 | 4 | 500 | 1 | 0.006 |
| 8600 | 10 | 2.0 | 10 | 35000 | 3 | 0.00005 | 1 | 45000 | 125 | 0.00007 |
| 2854 | 1 | 5.0 | 500 | 40 | 15 | 0.04 | 5 | 30 | 20 | 3.5 |
| 7737 | 1 | 10.75 | 500 | 500 | 40 | 0.006 | 35 | 750 | 9 | 0.003 |
| 8181 | 1 | 1.0 | 500 | 80 | 15 | 0.002 | 5 | 125 | 20 | 0.014 |
| 8122 | 1 | 2.0 | 500 | 4 | 400 | 0.1 | 40 | 6 | 1 | 0.6 |
| 6027 | 1 | Coaxial | 100 | 200 | 2 | 0.0004 | 2.5 | 300 | 200 | 0.0025 |
| 8440 | 1 | 3.5 | 500 | 3 | 350 | 0.25 | 75 | 4 | 1 | 1.5 |
| 804 | 0.1 | 2.0 | 5000 | 50 | 20 | 0.5 | 75 | 30 | 20 | 3.5 |
| 804R | 0.1 | 2.0 | 5000 | 12 | 20 | 0.6 | 75 | 20 | 20 | 3.5 |
| 8611 | 0.1 | 4.0 | 5000 | 1.5 | 40 | 0.5 | 140 | 2 | 10 | 3 |
| 3363 | 0.1 | 5.0 | 5000 | 90 | 40 | 1 | 150 | 120 | 10 | 7.5 |
| 3382 | 0.1 | 15.0 | 1000 | 50 | 80 | 1.5 | 250 | 100 | 4 | 10 |
| 4285 | 0.1 | 10.75 | 5000 | 1.5 | 50 | 0.4 | 300 | 2 | 7 | 5.7 |
| 5011 | 0.1 | 0.25 | 400 | 20 | 5 | 0.004 | 10 | 30 | 70 | 0.025 |
| 5673 | 0.1 | 2.0 | 5000 | 100 | 9 | 0.15 | 100 | 150 | 40 | 1.1 |
| 8365 | 0.1 | 0.25 | 400 | 7 | 20 | 0.004 | 10 | 10 | 20 | 0.025 |
| 8606 | 0.05 | 10.75 | 10000 | 0.5 | 75 | 3 | 600 | 1 | 5 | 21.2 |
| 2811A | 0.02 | 0.5 | 1000 | 1 | 500 | 6 | 150 | 1.5 | 0.7 | 40 |
| 8535 | 0.01 | 1.0 | 25000 | 0.3 | 25 | 0.6 | 120 | 0.5 | 15 | 4 |
| 4191 | 0.01 | 4.0 | 50000 | 4 | 60 | 5 | 400 | 6 | 7 | 35 |
| 4994 | 0.01 | 2.0 | 50000 | 3 | 100 | 4.5 | 200 | 5 | 4 | 25 |
| 5803 | 0.01 | 10.75 | 50000 | 4 | 200 | 12 | 1000 | 7 | 2 | 80 |
| 5624 | 0.01 | 2.0 | 20000 | 9 | 25 | 2 | 150 | 12 | 20 | 12 |
| 7427 | 0.01 | 2.0 | 4000 | 2 | 5 | 0.2 | 100 | 5 | 70 | 1.2 |
| 5008 | 0.01 | 0.5 | 50000 | 6 | 150 | 2 | 150 | 10 | 3 | 12 |
| 8573 | 0.01 | 3.5 | 50000 | 0.02 | 200 | 30 | 750 | 0.03 | 2 | 225 |
| 6247A | 0.005 | 4.0 | 100000 | 2 | 350 | 20 | 1500 | 3 | 1 | 120 |
| 4427 | 0.001 | 3.5 | 500000 | 0.1 | 300 | 480 | 2800 | 1 | 1.2 | 3060 |
| 5623 | 0.001 | 2.0 | 200000 | 1 | 200 | 15 | 400 | 1.5 | 2 | 90 |
| 3880 | 0.001 | 12 x 2 | 100000 | 0.3 | 500 | 150 | 1200 | 0.5 | 0.7 | 1000 |
| 2445 | 0.001 | 14.5 | 500000 | 1.5 | 300 | 40 | 3000 | 3 | 2 | 250 |
| 4906 | 0.001 | 10.75 | 500000 | 1 | 400 | 50 | 2000 | 2 | 1.5 | 300 |
| 7561 | 0.0005 | 4.75 | 1000000 | 0.2 | 2000 | 750 | 3500 | 0.15 | 0.2 | 3500 |
Custom model specifications · Group 2
| Model | Output (V/A) | Aperture (inch) | Peak current (A) | Droop (%/ms) | Usable rise time (ns) | IT Max.(A-sec.) | Maximum RMS current (A) | 3dB low frequency (Hz) | 3dB high frequency (MHz) | I/f(A/Hz) |
|---|---|---|---|---|---|---|---|---|---|---|
| 8240 | 2 | 2.0 | 500 | n/a | 12 | n/a | n/a | 100000 | 30 | n/a |
| 8546 | 1 | 2.0 | 500 | 10 | 600 | 0.15 | 50 | 15 | 0.5 | 1.1 |
| 8375 | 1 | 2.0 | 500 | 7000 | 4 | 0.001 | 10 | 11000 | 100 | 0.007 |
| 8536 | 1 | 9.0 | 500 | 750 | 75 | 0.007 | 25 | 1250 | 5 | 0.04 |
| 8579 | 0.1 | 10.75 | 5000 | 250 | 50 | 0.7 | 120 | 400 | 7 | 4.4 |
| 6996 | 0.1 | 2.0 | 5000 | 1040 | 25 | 0.5 | 100 | 2000 | 20 | 3 |
| 8330 | 0.01 | 2.0 | 1000 | 100 | 7 | 0.3 | 100 | 200 | 50 | 2.1 |
| 7325 | 0.01 | 3.5 | 50000 | 3 | 200 | 400 | 100 | 5 | 2 | 140 |
| 5769 | 0.05 | 3.5 | 10000 | 8 | 100 | 4 | 250 | 12 | 3.5 | 25 |
| 8591 | 0.001 | 6.0 | 500000 | 0.3 | 400 | 15 | 1000 | 0.4 | 1 | 105 |
Custom model specifications · Group 3
| Model | Output (V/A) | Aperture (inch) | Peak current (A) | Droop (%/ms) | Usable rise time (ns) | IT Max.(A-sec.) | Maximum RMS current (A) | 3dB low frequency (Hz) | 3dB high frequency (MHz) | I/f(A/Hz) |
|---|---|---|---|---|---|---|---|---|---|---|
| 7266 | 1 | 0.5 | 500 | 0.09 | 10 | 0.002 | 5 | 140 | 35 | 0.006 |
| 7305 | 1 | 1.75 | 500 | 0.08 | 20 | 0.005 | 7.5 | 125 | 20 | 0.017 |
| 3464 | 0.1 | 1.75 | 5000 | 0.8 | 20 | 0.5 | 100 | 1 | 20 | 1.7 |
| 4936 | 0.1 | 0.5 | 5000 | 0.9 | 20 | 0.2 | 50 | 1 | 20 | 0.6 |
| 5007 | 0.01 | 1.75 | 20000 | 0.3 | 20 | 1 | 150 | 0.5 | 20 | 3.5 |
| 5405 | 0.01 | 0.5 | 50000 | 6 | 150 | 2 | 150 | 10 | 3 | 12 |
| 8574 | 0.025 | 1.75 | 20000 | 100 | 100 | 0.5 | 100 | 160 | 4 | 3 |
Custom model specifications · Group 4
| Model | Output (V/A) | Aperture (inch) | Peak current (A) | Droop (%/ms) | Usable rise time (ns) | IT Max.(A-sec.) | Maximum RMS current (A) | 3dB low frequency (Hz) | 3dB high frequency (MHz) | I/f(A/Hz) |
|---|---|---|---|---|---|---|---|---|---|---|
| 7713-03 | 1 | 0.22 | 100 | 600 | 1.5 | 0.0002 | 2 | 1000 | 250 | 0.0014 |
| 8105-03 | 0.1 | 0.22 | 300 | 50 | 10 | 0.002 | 6 | 50 | 40 | 0.013 |
| 5974 | 0.1 | 0.5 | 5000 | 1 | 20 | 0.15 | 50 | 2 | 20 | 0.6 |
| 8500 | 0.1 | 2.0 | 5000 | 4 | 20 | 0.1 | 75 | 10 | 20 | 0.6 |
| 8445 | 0.1 | 2.0 | 5000 | 4 | 20 | 0.1 | 75 | 10 | 20 | 0.6 |
| 8568 | 0.01 | 0.5 | 25000 | 0.4 | 25 | 0.4 | 100 | 0.8 | 15 | 2.5 |
| 8532 | 0.01 | 1.0 | 10000 | 0.5 | 25 | 0.5 | 100 | 0.7 | 15 | 3 |
| 7765 | 0.01 | 2.0 | 20000 | 1 | 25 | 0.25 | 150 | 1 | 20 | 1 |
| 6535-03 | 0.005 | 0.22 | 5000 | 1.5 | 20 | 0.04 | 30 | 2.5 | 20 | 0.25 |