Flexible Rogowski Coil Current Transformer (1200 A, 3200 A)

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Rogowski coil sensor

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Product information： 011柔性罗氏线圈电流CT（1200A 3200A）规格书2026072801.pdf

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Product Description

Characteristics
● Excellent linearity.
● Minimal interference from adjacent conductors.
● No live high-voltage hazards.
● Small positional error.
● Wide bandwidth range.
● Protection rating IP67.

Advantages
● Easy to install in applications with limited space.
● Excellent measurement accuracy, with a fixed-position accuracy class of 0.5.
● It does not saturate under overcurrent or short-circuit conditions.
● Possesses exceptionally strong electromagnetic interference immunity.

Application
● Power protection, control, and monitoring applications:
Monitoring of the protection system for medium- and high-voltage switchgear.
Motor overload and short-circuit protection monitoring.
Monitoring of ground faults in large, complex conductors.
Arc fault current monitoring (arc protection).
Power fault indicator, transmission line fault locator, traveling wave detection.

● Power Quality Analysis and Governance Monitoring Scenario:
Power grid harmonic monitoring.

● Specialized industrial current monitoring applications:
Measurement of secondary-side current in calcium carbide furnaces and electric furnace transformers.
Measurement of current in power-frequency and intermediate-frequency welding machines.

● High‑transient pulse current measurement:
Lightning current detection.

● High-voltage insulation condition monitoring:
Insulator leakage current measurement.

● Charging Pile Sector:
Real-time current monitoring.

As a critical measurement component, it forms a flexible control scheme together with the “rail‑mounted meter” and the concentrator, among others.

Standard
●IEC 61010-1:2010
●IEC 61010-2-32:2012
●IEC 61869-10:2017

Insulation Coordination

Parameter	Symbol	Unit	≤ value	Note
Housing material			V0	Standard ANSI/UL94, UL746B, IEC60695-11-10
AC withstand voltage, 50 Hz, 1 min		V	4000	Integrator Module
AC withstand voltage, 50 Hz, 1 min		V	6000	coil
AC withstand voltage, 50 Hz, 1 min		V	6000	Signal cable

Environmental and Mechanical Characteristics

Parameter	Symbol	Unit	Minimum value	Typical value	Maximum value	Note
Ambient operating temperature	They	°C	-40		100
Environmental storage temperature	TA st	°C	-50		100
Relative humidity	Human Resources	%			80
Altitude		m	2500		3000
(Coil and coil body, signal transmission cable, cable ties) UV rating		level		4.5		Test basis: GB/T 16422.3, ASTM G154, ISO 4892-3.
Salt Spray Test		hour		72		Test basis: GB/T 2423.17-2024

Electrical Data: FB-4-A1200-JD8-XD100-2-IN5.5-OUT0.15-08
TA = 25°C, RL = 2 kΩ, unless otherwise specified.

Parameter	Symbol	Unit	Minimum value	Typical value	Maximum value	Note
Maximum current	Imax	A		1200
Rated primary current	In	A		200
Turns ratio	kr	A/mV		1200/400		50/60 Hz integrator output
Rated frequency	fR	Hertz		60
Rated secondary voltage	Us	mV		66.7		50/60Hz, In=200A
Frequency bandwidth (-3 dB)	BW	Hertz	45		5K
Angle difference	Δ φ	′	3		12	50/60Hz
Coil inductance	Ls	uH	1050		1160	Coil L = 345 mm
Coil resistance	Rs	Omega		130±2		Coil L = 345 mm
Difference 1 (In=200A)	ε1	%	-0.25		+0.25	1) Figure 2, central position 4
Difference of 2 (In=200A)	ε2	%	-0.8		+0.8	1) Figure 2, vertical positions 1, 2, and 3
Difference of 3 (In=200A)	ε3	%	-1.2		+1.2	2) Figure 3: Tilted positions 1, 2, 3, and 4
Linearity	εL	%		0.1
Error caused by external magnetic field interference	εxt	%	0	±0.2	±0.4	3)
Error caused by interphase interference among phases A, B, C, and N	εxt	%		±0.15		Figure 1 L=0 mm, In=100 A
Error caused by interphase interference among phases A, B, C, and N	εxt	%		±0.10		Figure 1 L=30mm In=100A
Error caused by interphase interference among phases A, B, C, and N	εxt	%		±0.05		Figure 1 L=50mm In=100A
Temperature drift		%			0.1
DC component	VDC	mV			0.1
Load capacity	Rs	K Ω		2
(Integrator) Operating Voltage	Uar	V		5
(Integrator) Power Consumption	P	W		0.05

Electrical Data: FB-4-A3200-JD8-XD100-2-IN5.5-OUT0.15-08
TA = 25°C, RL = 2 kΩ, unless otherwise specified.

Parameter	Symbol	Unit	Minimum value	Typical value	Maximum value	Note
Maximum current	Imax	A		3200
Rated primary current	In	A		600
Turns ratio	kr	A/mV		3200/400		50/60 Hz integrator output
Rated frequency	fR	Hertz		60
Rated secondary voltage	Us	mV		75		50/60Hz, In=600A
Frequency bandwidth (-3 dB)	BW	Hertz	45		5K
Angle difference	Δ φ	′	3		12	50/60Hz
Coil inductance	Ls	uH	1050		1160	Coil length L = 345 mm
Coil resistance	Rs	Omega		130±2		Coil length L = 345 mm
Difference 1 (In=600A)	ε1	%	-0.25		+0.25	1) Figure 2, central position 4
Difference of 2 (In=600A)	ε2	%	-0.8		+0.8	1) Figure 2, vertical positions 1, 2, and 3
Difference of 3 (In=600A)	ε3	%	-1.2		+1.2	2) Figure 3: Tilted positions 1, 2, 3, and 4
Linearity	εL	%		0.1
Error caused by external magnetic field interference	εxt	%	0	±0.2	±0.4	3)
Error caused by interphase interference among phases A, B, C, and N	εxt	%		±0.15		Figure 1 L=0 mm, In=100 A
Error caused by interphase interference among phases A, B, C, and N	εxt			±0.10		Figure 1 L=30mm In=100A
Error caused by interphase interference among phases A, B, C, and N	εxt			±0.05		Figure 1 L=50mm In=100A
AC withstand voltage, 50 Hz, 1 min		kV			4
Temperature drift		%			0.1
DC component	VDC	mV			0.1
Load capacity	Rs	k Ω		2
(Integrator) Operating Voltage	Uar	V		5
(Integrator) Power Consumption	P	W		0.05

Note: 1) The main conductor with a diameter of 15 mm passes vertically through the center of the Rogowski coil, as shown in Figure 2.
2) The conductor passes vertically through the center of the Rogowski coil, and the Rogowski coil is tilted in four positions about its central axis, as shown in Figure 3.
3) Conductor a passes perpendicularly through the center of the Rogowski coil, while another conductor b is positioned either parallel to or perpendicular to it, at a distance of 20 mm from the Rogowski coil.

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