PEM CWT-LF Low-Frequency AC Probe 0.06KA-30KA Rogowski Coil High-Frequency AC Probe

Model：CWT LFSeries Country of Origin：UK

Category：AC/DC Current Probe

Overview：

The CWT LF series current probes are primarily conversion tools designed to solve your low-frequency current measurement problems.

It features: measurement of very small currents at 50/60 Hz; measurement of very small phase shifts in sine waves; the CWT's standard and miniature sensing loops measure current long-pulse attenuation; the CWT LF series is available with standard-length and mini-length sensing coils.

Features

Specifications

Application Notes

Functions & Configuration

PEM Rogowski coils, as the world's leading wideband high-current sensors, are current sensors developed and provided by PEMUK (UK) based on Rogowski coil technology to meet various application requirements.

PEM Rogowski coils cover current measurement from 0.1Hz to over 30MHz, and from 15mA to over 3MA. PEM Rogowski coils are divided by application scenario into the CWT series for wideband high current, the RCT series for industrial monitoring, the LFR series for low frequency with high cost-effectiveness, the CMC series dedicated to motor common-mode noise measurement, and the DCFlex series for transient DC measurement.

The CWT series Rogowski coils can be customized to measure pulsed and continuous current signals of over 2MA (2000KA) at maximum. The CMC common-mode Rogowski coils are dedicated to testing high-frequency common-mode noise of motor and generator bearings in the electromechanical industry.

Key Features:

●Measurement range: 1A～300,000A

●Typical bandwidth: 0.1Hz～6MHz

●Thin, flexible high-performance sensing loop: (can be customized to any length: standard or miniature coils)

●Near-zero interference: during measurement, the actual load current is only a few picohenries

●Easily connected to the actual measurement object

●Very small 'attenuation' value

●CE mark

●Instantaneous voltage output is ±6V peak-to-peak, which can be directly connected to oscilloscopes, data acquisition devices, digital voltmeters and power recording devices, and can also be used as a trigger input

1. Standard length

Model	Sensitivity(mV/A)	峰值		最大噪声 (mVpk-pk)	Attenuation characteristics （%/ms）	Low frequency Bandwidth （Hz）	50Hz时 Phase lead (deg）	High-frequency bandwidth (MHz)
		电流（KA）	di/dt (KA/µs)					High-frequency bandwidth (MHz)
		电流（KA）	di/dt (KA/µs)					Cable length300 (mm)	Cable length700 (mm)
CWT03LF	100.0	0.06	0.4	15.0	4.6	5.1	8.3	6.5	3.0
CWT06LF	50.0	0.12	0.8	15.0	2.3	2.6	4.2	6.5	3.0
CWT1 LF	20.0	0.3	2.0	15.0	1.0	1.0	1.8	6.5	3.0
CWT3 LF	10.0	0.6	4.0	15.0	0.5	0.55	0.85	6.5	3.0
CWT6 LF	5.0	1.2	8.0	15.0	0.25	0.27	0.45	6.5	3.0
CWT15LF	2.0	3.0	11.0	15.0	0.1	0.11	0.18	6.5	3.0
CWT30LF	1.0	6.0	11.0	15.0	0.05	0.055	0.09	6.5	3.0
CWT60LF	0.5	12.0	11.0	15.0	0.025	0.022	0.045	6.5	3.0
CWT150LF	0.2	30.0	11.0	15.0	0.01	0.011	0.018	6.5	3.0
CWT300LF	0.1	60.0	11.0	10.0	0.007	0.008	0.012	6.5	3.0
CWT600LF	0.05	120.0	11.0	5.0	0.007	0.008	0.012	6.5	3.0
CWT1500LF	0.02	300.0	11.0	4.0	0.007	0.008	0.012	10.0	5.0

2. Miniature length

Model	Sensitivity(mV/A)	峰值		最大噪声 (mVpk-pk)	Attenuation characteristics （%/ms）	Low frequency Bandwidth （Hz）	50Hz时 Phase lead (deg）	High-frequency bandwidth (MHz)
		电流（KA）	di/dt (KA/µs)					High-frequency bandwidth (MHz)
		电流（KA）	di/dt (KA/µs)					Cable length100 (mm)	Cable length200 (mm)
CWT03LF	100.0	0.06	0.4	16.0	10.2	11.0	18.6	5.0	4.0
CWT06LF	50.0	0.12	0.8	16.0	5.1	5.6	9.3	12.0	7.5
CWT1 LF	20.0	0.3	2.0	15.0	2.2	2.3	4.0	12.0	7.5
CWT3 LF	10.0	0.6	4.0	15.0	1.0	1.1	1.7	12.0	7.5
CWT6 LF	5.0	1.2	8.0	15.0	0.5	0.55	0.85	12.0	7.5
CWT15LF	2.0	3.0	14.0	15.0	0.2	0.22	0.35	12.0	7.5
CWT30LF	1.0	6.0	14.0	15.0	0.1	0.11	0.18	12.0	7.5
CWT60LF	0.5	12.0	14.0	15.0	0.05	0.055	0.09	12.0	7.5
CWT150LF	0.2	30.0	14.0	15.0	0.02	0.022	0.035	12.0	7.5
CWT300LF	0.1	60.0	14.0	15.0	0.01	0.011	0.018	12.0	7.5
CWT600LF	0.05	120.0	14.0	10.0	0.007	0.008	0.012	12.0	7.5

*1 Maximum noise (mVpk-pk) Distributed around the low-frequency bandwidth (-3dB)
*2 High-frequency bandwidth (Hz) The high-frequency bandwidth depends on the length of the loop section; maintain the FH value of other contact loops of PEM

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PEM CWT-LF Low-Frequency AC Probe 0.06KA-30KA Rogowski Coil High-Frequency AC Probe

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