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China, Chinese Current Measuring Energy Consumption Monitoring Rogowski Coil Sensor Flexible Current Transformer1 Industrial Products Supplier Manufacturer Details, price list catalog:
China Industrial Products Supplier Manufacturer List Catalog
SensorCurrent SensorRogowski CoilCurrent Sensor
ROGOWSKI TECHNOLOGY (SHANGHAI) CO., LTD.
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Product Description World-famous manufacturerThree major production bases in Shanghai, Chongqing, and ZhejiangLooking forward to in-depth communications, project cooperation, and exclusive agency Contact: Susan NRC ?8 Flexible Rogowski coil fixed by cable tiesHigh linearity from 1A to 100kAWide dynamic rangeVery useful with large size or awkward shaped conductors or in places with limited accessNo danger from open-circuited secondaryNot damaged by large overloadsNon-intrusive, no power drawn from the mainMeasurement uniformity at any position of the conductor inside the coilExcellent degree of rejection to the external current conductor FeatureNRC is a flexible current transducer based on Rogowski principle, particularly suitable for measurement in combination with portable devices. NRC coils are available in different sizes and can be supplied according to customer's design, therefore they can be used in all those applications, in which traditional transducers are not fitting due to its size and/or weight.Due to its specific features, flexible Rogowski coil is an extremely comfortable solution for current measurement and can be used in a number of cases where traditional current transducer is not the adequate solution.NRC coil is provided with a shield against the influence of external magnetic fields; therefore, it grants a stable measurement from low currents to hundreds of kA. The Rogowski coils must be connected to an electronic integrator for 90° phase shift compensation and frequency equalization. Our DIN-RAIL and panel meters can interface Rogowski coils directly without the need of the external integrators. This is an advantage because there are no external boxes or any power supply with consequent ease of use. The particular features of the Rogowski coils combined with the extremely flexible input programming of our portable meters, allow to carry out measurement by all applications. Advantage? Calibrated to 0.5% ? 8mm section easy to install ? Easy to fixed on bus-bar and cable by cable ties? Lower zero drift down to 0.1mVRelated ProductsS1 D1 S10 SW DA01 DA05 ME631 ME435 ME440 Applications? Measuring devices, lab instrumentation ? Power monitoring & control systems ? Harmonics and transients monitoring ? Very high current monitoring SpecificationMODELNRC-100NRC-150NRC-200Coil length395mm525mm665mmWindow size100mm150mm200mmReference Rated current1000A3000A6000ACoil Resistance 260 (+/-10) Ω320 (+/-10) Ω390 (+/-10) ΩWeightApprox. 140gApprox. 150gApprox. 170gRatioCalibrated85mV/kA@50Hz102mV/kA@60Hz50mV/kA@50Hz60mV/kA@60HzUncalibrated110mV/kA@50Hz132mV/kA@60HzRead AccuracyCalibrated <0.5% (central position, 25oC)Uncalibrated < 5% tolerance (central position, 25oC)Maximum current measurable 100kACoil Section8mmLead length2meterTemperatureUncalibrated 200ppm/CCalibrated 300ppm/CPosition Error±1% maximumOutput on 0A(zero drift)≤0.05mVPhase error≤0.5°Linearity±0.2% of readingBandwidth1Hz to 100kHz(-3dB)Operating temperature-30oC to 80oCStorage temperature-40oC to 90oCFor other requirements, please contact us for customization.Position sensitivityConductor PositionTypical Error (%)Adjacent to the center of coil<0.5%Adjacent to the inside of coil<1%Materials Coil & cableThermoplastic rubberflame retardant UL 94 V-0 ratedCouplingsPC, ABS UL 94 V-0 ratedColor(coil)Orange, Yellow, Red, Green, BlueShielded100% coil, 100% output cableSafety Certifications CE markedComplies with LVD EN 61010-1:2010EMC EN 61326-1:2013IP67 Voltage insulationCoil: 2000VSignal cable:1000VSafety1000V CATIII ,600V CATIV Dimension's tolerance:A,B,C,F:±5mm, D:±0.2mm,E:±10mmDimensions(mm)NRC-100NRC-150NRC-200Windows size A135165210Windows size B100150200Coil O.D.151181226Coil section8Lead Cable Total Length2000Coil length395525665More Special Rogowski coil+Integrator for fault indicatorRogowski coil NZ special for high temperature electric furnaceRogowski Coil Sensor for Lightning current 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.
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