Energy Monitoring Current Transformer Rogowski Coil Current Sensor for Energy Monitoring

• Customization: Available
• Type: Rogowski
• Output Signal Type: Analog Output
• Model NO.: VRC-24
• Production Process: Rogowski Coil Uniformly Wound with Enameled Wire
• Material: Coil and Signal Processing Circuit
• Accuracy Grade: Calibrated <0.5% (Central Positi
• Application: Power Monitoring & Control, Measuring Device
• IP Rating: IP67
• Certification: CE
• Customized: Customized
• Rated Current: 100A,300A,600A,800A,1000A
• Vrc-24: Inner Diameter 24mm
• Vrc-36: Inner Diameter 36mm
• Vrc-50: Inner Diameter 50mm
• Vrc-80: Inner Diameter 80mm
• Ratio: Calibrated 22.5mv/Ka@50Hz, 50mv/Ka@50Hz
• Coil Section: 6mm
• Lead Length(Default): 2 Meter
• Read Accuracy: 0.5%Class
• Internal Resistance: 50-250 &Omega
• Position Error: Less Than 1%
• Phase Error: Less Than 0.5°
• Linearity: ±0.1%
• Bandwidth(3dB): 1Hz-20kHz
• Operating Temperature: -40ºC-85ºC
• Transport Package: Poly Bag and Export Carton
• Specification: Window size 24mm/36mm/50mm/80mm
• Trademark: MEATROL
• Origin: China
• HS Code: 8504311000
• Production Capacity: 50000PCS/Year

Product Description

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Three major production bases in Shanghai, Chongqing, and Zhejiang

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VRC series
Ø6 High accuracy Mini flexible Rogowski coil
The VRC series is a new generation of flexible Rogowski coil (Rogowski® coil) current sensors, which are especially suitable for measuring in combination with portable devices. The VRC Rogowski Coil, designed with cutting-edge improvements that take current measurement to the next level. Whether you're working in high-interference environments or need pinpoint spatial accuracy, the VRC Rogowski Coil offers the reliability and precision you need. VRC series coils have IP67 protection grade.

Specification

At 25ºC, RL = 100 kΩ

Reference Rated current		<10kA
Ratio @50Hz	Calibrated (Manufacturing tolerance<0.5%)	... 22.5mV/kA 50mV/kA ...
Sensitivity temperature drift coefficient		Calibrated, <100ppm/ºC
Read Accuracy		0.2% class (Vertically centered position) Conforms to IEC 61869-2 & IEEE/ANSI C57.13
Internal resistance		50~250 Ω
Position Error		<0.5%
Output on 0A (zero drift)		<0.05mV
Phase error		<0.3°(45Hz~65Hz)
Linearity		±0.1% (1%~100%)
Bandwidth(3dB)		1Hz~20kHz
Operating temperature		-40ºC~85ºC
Coil Section		6mm
Lead length(default)		2 meters
For other requirements, please contact us for customization.

Materials

Coil	Thermoplastic rubber flame retardant UL 94 V-0 rated
Couplings	PC, ABS, UL 94 V-0 rated
Color(coil)	Orange, Yellow, Red, Green, Blue,Grey

Insulation coordination

Applicable voltage range	1000V CATIII, 600V CATIV
Dielectric strength	7400Vac @ 50/60Hz 1 minute
Certifications	CE, IP67, Rohs 2.0

Dimensions

3 in 1 Rogowski coil with 333mV Built-in Integrator
Output 333mV,  RJ45, M8, M12 optional

What is a Rogowski coil?

Rogowski coils have been used for the detection and measurement of electric currents for decades. They are based on a simple principle: an "air-cored" coil is placed around the conductor in a toroidal fashion and the magnetic field produced by the current induces a voltage in the coil. The voltage output is proportional to the rate of change of current. This voltage is integrated, thus producing an output proportional to the current.
By using precision winding techniques, especially developed for the purpose, the coils are manufactured so that their output is not influenced by the position of the conductor within the toroid, and to reject interference from external magnetic fields caused, for example, from nearby conductors.Basically, a Rogowski coil current measuring system consists of a combination of a coil and conditioning electronics.Rogowski coil current transducers are used for the AC measurement.
They can be used in similar circumstances to current transformers but for many applications they have considerable advantages:
• Wide dynamic range
• High linearity.
• Very useful with large size or awkward shaped conductors or in places with limited access. Thanks to the structure without hard      core, the coil can be easily manufactured according to the application or to the available space.
• Unlike traditional current transducers, there is no danger from open-circuited secondaries.
• They cannot be damaged by large overloads.
• They are non-intrusive. They draw no power from the main circuit carrying the current to be measured.
• They are also light weighted and in some applications are light enough to be suspended on the conductor being measured.
The transducer does not measure direct currents but, unlike a current transformer, it can carry out accurate measurements of AC component even if there is a large superimposed DC component, since there is no iron core causing saturation. This feature is particularly useful for measuring ripple currents for example in battery charging systems.