Flexible Rogowski Coil FCT is a flexible current probe utilizing the Rogowski principle,which is suitable to conveniently measure single and three phase AC as well as pulsed DC currents. After appropriate signal conditioning, it can be used with digital multimeters, recorders and other suitable equipment to measure current from very low frequencies up to 1MHz. The probes comprise a flexible air–cored sensor which can be opened, allowing them to be installed around a primary conductor without interrupting the circuit. The flexible and lightweight measuring head allows quick and easy installation in hard to reach areas and with large conductors. Available Models
Model | Category | Advantages |
FCT | Normal | Length is up to 20m. Suitable for metallurgy current detection, the detection of leakage current from the super large equipment to the ground and so on. |
FCT-A | High accuracy | Accuracy up to 0.2%. Excellent anti-disturbance, temperature drift and stability. | |
FCT-F | Super flexible | Suitable for irregular conductor detection, such as the detection of S type output end of transformer |
FCT-H | High temperature tolerance | Temperature tolerance: long time for over 150°, short time for over 200°. Can be used in water or oil. |
FCT-M | Mini rogowski coil | Diameter of the coil is down to 4mm. Suitable for current under 1000A, and application with a limitation of space |
FCT-S | High sensitivity | Output up to 1V/100A. Suitable for leakage/zero-sequence detection, mA level current detection, low-frequency signal (<5Hz) detection |
FCT-T | Thicker | High voltage tolerance. Not easy to deformation. Suitable for high voltage, high temperature, and outdoor application |
Technical Specification
Basic Frequency | 10Hz .. 10kHz | Weight of Electronics | Approx. 100g |
Working Frequency | 0.8Hz .. 10MHz | Transfer Ratio M | 0.05 .. 10 μH |
Linearity | <0.01% | Sensitivity | Output voltage Vout=2×π×M×f×IAC |
f=frequency IAC=current to be measured |
Measuring Range (crest factor<1.5@Basic Frequency) | 0.01 .. 300kA | Phase Error | 90°± 0.1° |
Sensor Cable Length | 200mm .. 10m |
Load Resistance | ≥1kΩ | Sensor Cable Diameter | 4mm .. 20mm |
Operating Temperature | -10 .. +60°C | Signal Cable Diameter | 2.0 .. 5.0mm |
Storage Temperature | -20 .. +70°C | Signal Cable Length | 0.1m .. 100m |
Output Connection | Banana Plug Pair Output Connection |
BNC Output Connetion |
OEM Cable Output |
Calibration Kit |
Special Cable Lengths and/or Gains on request |
Ordering Information
FCT-cate-abc-xyz |
cate …… category,refer to available models. e.g. M=mini rogowski coil |
abc …… 3 numbers stand for current range. e.g. 203=2*103=2000A |
xyz …… 3 numbers stand for coil length. e.g. 600=600mm |
| | | |
For example: an FCT-M-203-600 has a current ranges of 2000A and a 600mm circumstance mini rogowski coil. |
Custom length, color, sensitivity and other parameters are available. |
ROGOWSKI COIL The FCT is an ideal replacement for medium/large current, current transformers(CT’s) and has the advantages that it is: Suitable to measure currents from mA to hundreds of kA. Wide dynamic range. Very useful with awkward shaped conductors or in places with limited available space. No danger from open-circuited secondary Not damaged by large overloads Non-intrusive, no power drawn from the main Thanks to its light weight, it can be hanged on the measured conductor
ROGOWSKI COIL Applications Measuring devices, lab instrumentation DC ripple measurement Analysis of harmonics, power measurements Very high current monitoring Measuring starting transients of electric motors Sudden short circuit testing Protection system for slip-ring induction motors Measuring the currents flowing in the framework of a large generator Shaft Current measurements Measuring the current in Electromagnetic Launchers Monitoring the current in railway lines to check signaling currents Arc furnace currents High-current testing of switch-gear and fuses Measuring leakage currents down insulators Certification
ROGOWSKI COIL Typical cases 1. Application to electric furnace
2. Application to high-voltage transmission and distribution
3. Application to power quality analysis Technical Parameters
Coil length | 200mm~10m |
Frequency | 1HZ~100kHz |
Current | 50mA~300kA |
Accuracy | Accuracy of reading (10%~100%F.S.) Up to 0.3% |
Angle deviation 90°±0.2° |
The signal line of the coil is wear resistant, shielded, coaxial and double layer cable with secure BNC connector. Our rogowski coil supports FLUKE, CA, HIOKI and various brands, and it is the ideal current probe of other related power quality products. Rogowski coil is often used to measure the following parameters: Arms, THDA%f, Aharm, Areac, kW, kVA, kVARQf, kVARD, PF, cosφ(DPF)and so on. ROGOWSKI COIL Tel: (86)21-64850006 Fax :(86)21-64850006 Web: http://en.meatrol.cn Add: unit 66, No.388, Du Shi Road, Min hang District, Shanghai China