Skip to content

EN

简体中文 English

CWT HF Rogowski Coil

Brand: PEM
Origin: United Kingdom

CWT HF Rogowski Coil

For AC and pulsed current waveform measurement. Select by sensitivity, peak current and bandwidth.

Key specification options

Sensitivity (mV/A): 200 / 100 / 50 and more
Peak current (A): 30 / 60 / 120 and more
Noise (mV p-p): 15 / 11 / 8.0 and more
Droop (%/ms): 85 / 78 / 70 and more
Low-frequency bandwidth (3dB), Hz: 150 / 105 / 80 and more
di/dt(kA/μs): 2.0 / 4.0 / 8.0 and more

Product design

CWT HF adds a screened coil arrangement to the flexible Rogowski design for current waveform measurements where interference from switching environments matters. Compare coil construction, cable routing and waveform response when choosing between standard CWT and HF configurations.

Measurement and application

Current waveform measurements depend on both probe placement and signal conditioning. Start with the conductor shape, available space and the waveform you need to observe, then consider the coil and measurement equipment together.

Selection and connections

Distinguish temporary testing from fixed installation, and confirm the required coil, integrator and cable combination rather than assuming that similar looking accessories are interchangeable.

Series models & specifications

CWT Standard Rogowski Coil

Model selection

CWT Standard Rogowski Coil / Model selection
Model	Sensitivity (mV/A)	Peak current (A)	Noise (mV p-p)	Droop (%/ms)	Low-frequency bandwidth (3dB), Hz	di/dt(kA/μs)	High-frequency bandwidth (3dB), MHz · 300mm coil	High-frequency bandwidth (3dB), MHz · 700mm coil
CWT/3N	10.0	600	14	0.9	1.0	2.0	10	5
CWT/6	5.0	1.2k	12	0.9	1.0	8.0	16	10
CWT/15	2.0	3.0k	7.0	0.7	0.8	20	16	10
CWT/30	1.0	6.0k	5.0	0.5	0.6	40	16	10
CWT/60	0.5	12k	3.0	0.35	0.4	40	16	10
CWT/150	0.2	30k	3.0	0.2	0.2	40	16	10
CWT/300	0.1	60k	3.0	0.1	0.1	40	16	10

View product details

CWT HF Rogowski Coil

Model selection

CWT HF Rogowski Coil / Model selection
Model	Sensitivity (mV/A)	Peak current (A)	Noise (mV p-p)	Droop (%/ms)	Low-frequency bandwidth (3dB), Hz	di/dt(kA/μs)	High-frequency bandwidth (3dB), MHz · 300mm coil	High-frequency bandwidth (3dB), MHz · 700mm coil
CWTHF/015	200	30	15	85	150	2.0	20	8
CWTHF/03	100	60	11	78	105	4.0	20	8
CWTHF/06	50	120	8.0	70	80	8.0	20	10
CWTHF/1	20	300	6.0	50	50	20	20	10
CWTHF/3	10	600	12	11	12	40	30	15
CWTHF/6	5.0	1.2k	12	5.5	6.0	80	30	15
CWTHF/15	2.0	3.0k	10	3.0	3.0	80	30	15
CWTHF/30	1.0	6.0k	10	1.5	1.5	120	30	15
CWTHF/60	0.5	12k	8.0	1.0	1.0	120	30	15
CWTHF/150	0.2	30k	5.0	0.8	0.8	120	30	15
CWTHF/300	0.1	60k	5.0	0.2	0.2	120	30	15
CWTHF/600	0.05	120k	5.0	0.06	0.05	120	30	15
CWTHF/1500	0.02	300k	5.0	0.035	0.03	120	30	15

CWT Mini Rogowski Coil

Model selection

CWT Mini Rogowski Coil / Model selection
Model	Sensitivity (mV/A)	Peak current (A)	Noise (mV p-p)	Droop (%/ms)	Low-frequency bandwidth (3dB), Hz	di/dt(kA/μs)	High-frequency bandwidth (3dB), MHz · 100mm coil	High-frequency bandwidth (3dB), MHz · 200mm coil
CWTMini/03	100	60	15	6.6	7.0	1.0	10	5.0
CWTMini/06	50	120	15	4.8	5.0	2.0	10	5.0
CWTMini/1	20	300	12	3.6	4.0	2.5	20	15
CWTMini/3	10	600	10	1.8	2.0	5.0	20	15
CWTMini/6	5.0	1.2k	10	0.8	0.9	10	20	15
CWTMini/15	2.0	3.0k	8.0	0.4	0.5	25	20	15
CWTMini/30	1.0	6.0k	7.0	0.25	0.3	40	20	15
CWTMini/60	0.5	12k	5.0	0.2	0.2	40	20	15
CWTMini/150	0.2	30k	5.0	0.1	0.1	40	20	15
CWTMini/300	0.1	60k	5.0	0.05	0.05	40	20	15
CWTMini/600	0.05	120k	5.0	0.03	0.02	40	20	15
CWTMini/1500	0.02	300k	5.0	0.03	0.02	40	20	15

View product details

CWT Ultra-mini Rogowski Coil

Model selection

CWT Ultra-mini Rogowski Coil / Model selection
Model	Sensitivity (mV/A)	Peak (A)	Noise (mVp-p)	Droop (%/ms)	LF(-3dB) bandwidth (Hz)	Peak di/dt (A/ns)	HF(-3dB) bandwidth (MHz)
CWTUM/015	200	30	20	80	116	2.0	30
CWTUM/03	100	60	20	65	67	4.0	30
CWTUM/06	50	120	15	35	34	8.0	30
CWTUM/1	20	300	15	9.0	9.2	20	30
CWTUM/3	10	600	10	6.0	6.2	40	30
CWTUM/6	5.0	1200	10	3.0	3.2	70	30
CWTUM/15	2.0	3000	5.0	2.0	2.0	70	30
CWTUM/30	1.0	6000	5.0	2.0	2.0	70	30

View product details

CWT Mini 50HF Rogowski Coil

Model selection

CWT Mini 50HF Rogowski Coil / Model selection
Model	Sensitivity (mV/A)	Peak current (kA)	Noise (mVp-p)	Droop (%/ms)	LF(-3dB) bandwidth (Hz)	Peak di/dt (A/ns)	HF(-3dB) bandwidth (MHz), 100mm
CWTMini50HF/015	200	0.03	20	85	150	2.0	50
CWTMini50HF/03	100	0.06	18	78	100	4.0	50
CWTMini50HF/06	50	0.12	12	70	75	8.0	50
CWTMini50HF/1	20	0.3	9.0	53	50	20	50
CWTMini50HF/3	10	0.6	15	11	6.0	40	50
CWTMini50HF/6	5.0	1.2	15	5.5	6.0	80	50
CWTMini50HF/15	2.0	3.0	12	2.8	3.0	80	50
CWTMini50HF/30	1.0	6.0	12	1.5	1.5	100	50
CWTMini50HF/60	0.5	12.0	10	1.0	1.0	100	50
CWTMini50HF/150	0.2	30.0	8.0	1.0	1.0	100	50

View product details

CWT UM-S Rogowski Coil

Model selection

CWT UM-S Rogowski Coil / Model selection
Model	Sensitivity (mV/A)	Peak current (A)	Noise (mV p-p)	Droop (%/ms)	Low-frequency bandwidth (3dB), Hz	di/dt(kA/μs)	High-frequency bandwidth (3dB), MHz
CWTUM-S/015	200	30	20	85	150	2.0	30
CWTUM-S/03	100	60	18	78	100	4.0	30
CWTUM-S/06	50	120	12	70	75	8.0	30
CWTUM-S/1	20	300	10	53	50	20	30
CWTUM-S/3	10	600	12	11	12	40	30
CWTUM-S/6	5.0	1.2k	12	5.5	6.0	80	30
CWTUM-S/15	2.0	3.0k	10	2.8	3.0	100	30
CWTUM-S/30	1.0	6.0k	10	1.5	1.5	100	30
CWTUM-S/60	0.5	12.0k	8.0	1.0	1.0	100	30
CWTUM-S/150	0.2	30.0k	5.0	1.0	1.0	100	30

View product details

CWT UM-F Rogowski Coil

Model selection

CWT UM-F Rogowski Coil / Model selection
Model	Sensitivity (mV/A)	Peak current (A)	Noise (mV p-p)	Droop (%/ms)	Low-frequency bandwidth (3dB), Hz	di/dt(kA/μs)	High-frequency bandwidth (3dB), MHz
CWTUM-F/03	100	60	20	85	150	4.0	20
CWTUM-F/06	50	120	15	78	100	8.0	20
CWTUM-F/1	20	300	15	53	50	20	20
CWTUM-F/3	10	600	15	19	20	40	20
CWTUM-F/6	5.0	1.2k	15	9.3	10	80	20
CWTUM-F/15	2.0	3.0k	12	4.6	5.0	100	20
CWTUM-F/30	1.0	6.0k	12	2.4	2.6	100	20
CWTUM-F/60	0.5	12.0k	12	1.2	1.2	100	20

View product details

CWT UMHF-F Rogowski Coil

Model selection

CWT UMHF-F Rogowski Coil / Model selection
Model	Sensitivity (mV/A)	Peak current (A)	Noise (mV p-p)	Droop (%/ms)	Low-frequency bandwidth (3dB), Hz	di/dt(kA/μs)	High-frequency bandwidth (3dB), MHz
CWTUMHF-F/03	100	60	20	85	150	4.0	30
CWTUMHF-F/06	50	120	15	78	100	8.0	30
CWTUMHF-F/1	20	300	15	53	50	20	30
CWTUMHF-F/3	10	600	15	19	20	40	30
CWTUMHF-F/6	5.0	1.2k	15	9.3	10	80	30
CWTUMHF-F/15	2.0	3.0k	12	4.6	5.0	100	30
CWTUMHF-F/30	1.0	6.0k	12	2.4	2.6	100	30
CWTUMHF-F/60	0.5	12.0k	12	1.2	1.2	100	30

View product details

CWT LF Rogowski Coil

Standard Coils

CWT LF Rogowski Coil / Standard Coils
Model	Sensitivity (mV/A)	Peak current (kA)	di/dt(kA/μs)	Noise (mV pK-pK)	Droop (%/ms)	Low-frequency bandwidth (3dB), Hz	Phase lead @50Hz (deg)	High-frequency bandwidth (3dB), MHz · 300mm coil	High-frequency bandwidth (3dB), MHz · 700mm coil
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
CWT1LF	20.0	0.3	2.0	15.0	1.0	1.0	1.8	6.5	3.0
CWT3LF	10.0	0.6	4.0	15.0	0.5	0.55	0.85	6.5	3.0
CWT6LF	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

Miniature Coils

CWT LF Rogowski Coil / Miniature Coils
Model	Sensitivity (mV/A)	Peak current (kA)	di/dt(kA/μs)	Noise (mV pK-pK)	Droop (%/ms)	Low-frequency bandwidth (3dB), Hz	Phase lead @50Hz (deg)	High-frequency bandwidth (3dB), MHz · 100mm coil	High-frequency bandwidth (3dB), MHz · 200mm coil
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
CWT1LF	20.0	0.3	2.0	15.0	2.2	2.3	4.0	12.0	7.5
CWT3LF	10.0	0.6	4.0	15.0	1.0	1.1	1.7	12.0	7.5
CWT6LF	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

View product details

Series downloads

CWT Standard Rogowski Coil

CWT HF Rogowski Coil

CWT Mini Rogowski Coil

CWT Ultra-mini Rogowski Coil

CWT Mini 50HF Rogowski Coil

CWT UM-S Rogowski Coil

CWT UM-F Rogowski Coil

CWT UMHF-F Rogowski Coil

CWT LF Rogowski Coil

Find products

Search by brand and model.

Technical resources

Understand measurement and configuration.

Contact sales

Tell us about your measurement needs.