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PEM Rogowski Coil CWT-CWTHF Datasheet datasheet.pdf
PEM CWT Rogowski Coil Technical Note - Low-Frequency Performance CWT-Technical-notes-Low-Frequency-performance-Probemart.pdf
PEM CWT Rogowski Coil Technical Note - Delay and Rise Time CWT Technical Note – Delay and Rise TimeProbemart.pdf
PEM CWT Rogowski Coil Application Note application_notes-Probemart.pdf
PEM CWT Integrator Module Fuse Replacement Instructions for CWT Integrator Module Fuse ReplacementProbemart.pdf
PEM CWT Application Article High Performance Rogowski Current Transducers-W.F.Ray C.R.Hewson Probemart.pdf
PEM CWT Minimum Measurable Current Application Article -Probemart.pdf
PEM CWT Accurate Measurement in High-Power Motor Power Conversion Application -Probemart.pdf
PEM CWT Rogowski Coil Immunity to Coupled Voltage Interference Technical Note CWT-Technical-notes-Voltage-immunity-Probemart.pdf
PEM Rogowski Coil - A Next-Generation Current Probe for High-Speed, High-Power Measurements -Chrise Hewson.pdf
PEM- Rogowski Coil Practical Fast-Switching Current Measurement in Power Electronics Chris Hewson, APEC-March-2015.pdf
CWT wideband high-current Rogowski coils mainly include: CWT standard series, CWT LF low-frequency series, CWT mini series, CWT miniHF series, CWT Mini 50HF, CWT Ultra Mini, CWT LF and other products.
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CWT standard model main performance parameters:
Peak current: 30 A - 600 kA peak
Output: ±6.0 V (full scale); high-frequency bandwidth (-3 dB): 16 MHz
Accuracy (typical): up to ±0.2% at the coil center position
Operating temperature range: 0°C to +40°C (integrator); –20°C to +100°C (coil + lead)
Coil length: 300, 500, 700 or 1000 mm (custom lengths available)
Coil insulation: 10 kV peak
Coil cable diameter: 8.5 mm
Lead length: 2.5 m or 4 m (custom lengths available)
Power supply: AA battery or 12 V DC power adapter
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CWT standard model main features:
Traceable calibration data (including certificate)
Non-contact measurement has no effect on the circuit under test
No magnetic material means excellent linearity
Fully isolated from DC current, enabling measurement of small ripple currents on large DC currents
Overcurrent range will not cause damage(not exceeding the absolute maximum di/dt)
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| Parameter | Value |
|---|---|
| Peak Current | 6000 A |
| High Frequency Bandwidth | 16 MHz |
| Low Frequency Cut-off | 0.6 Hz |
| Frequency Bandwidth | 16 / 12.5 / 10 / 8 MHz (300 / 500 / 700 / 1000 mm) (by coil length) |
| Peak di/dt | 40 kA/µs |
| Droop Rate | 0.5 %/ms |
| Sensitivity | 1 mV/A |
| Noise | 3.5 mV (p-p, peak-to-peak) |
| Coil Withstand Voltage | 10 kV |
| Operating Temperature | -20~+100 °C |
| Zero Adjustment | No |
| Coil Diameter | 8.5 mm |
| Coil Length | 300~1000 mm |
| Cable Length | 1 / 2.5 / 4 m |