La description
MRC
Ø6 Flexible Rogowski coil fixed by cable ties
- High linearity from 1A to 1000A
- Wide dynamic range
- Very useful with large size or awkward shaped conductors or in places with limited access
- No danger from open-circuited secondary
- Not damaged by large overloads
- Non-intrusive, no power drawn from the main
- Measurement uniformity at any position of the conductor inside the coil
- Excellent degree of rejection to the external current conductor
Fonctionnalité
MRC is a MINI flexible current transducer based on Rogowski principle, particularly suitable for measurement in combination with portable devices. MRC 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 confortable solution for current measurement and can be used in a number of cases where traditional current transducer is not the adequate solution.
MRC 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 is 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.
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Advantage
• Calibrated to 0.5% • 6mm section make more stable • Easy to fixed on bus-bar or cable by cable ties • Very competitive price Related Products S1 D1 S9 SW A01 A05 ME631 ME432 |
Applications
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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, Par exemple, 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.
spécification
| MODÈLE | MRC-16 | MRC-24 | MRC-36 | |
| Coil length | 80millimètre | 97millimètre | 130millimètre | |
| Window size | 16millimètre | 24millimètre | 36millimètre | |
| Reference Courant nominal |
100UN | 300UN | 600UN | |
| Coil Resistance | 55 (+/-10) Ω | 65 (+/-10) Ω | 80 (+/-10) Ω | |
| Masse | Approx 100g | Approx 102g | Approx 105g | |
| Maximum current measurable | 100kA | |||
| Coil Section | 6millimètre | |||
| Lead length | 2meter | |||
| Sortir (di/dt) | Uncalibrated | 60mV/[Protégé par e-mail] 72mV/[Protégé par e-mail] | ||
| Calibrated | 50mV/[Protégé par e-mail] 60mV/[Protégé par e-mail] | |||
| Read Accuracy | Calibrated <0.5% (central position, 25C) Uncalibrated < 5% tolerance (central position, 25C) |
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| Température | Uncalibrated 200ppm/C | |||
| Calibrated 300ppm/C | ||||
| Position Error | ±1% maximum | |||
| Output on 0A (zero drift) |
≤0.05mV | |||
| Phase error | ≤0.5° | |||
| Linearity | ±0.2% of reading | |||
| Bande passante | 1Hz pour 100kHz(-3dB) | |||
| Operating temperature | -30C pour 80C | |||
| Température de stockage | -40C pour 90C | |||
| Other requirements, please contact us to OEM. | ||||
Position sensitivity
| Conductor Position | Typical Error(%) |
| Adjacent to the clip together mechanism | <0.5% |
| Adjacent to the opposite clip | <1% |
Matériaux
| Coil & cable | Thermoplastic rubber flame retardant UL 94 V-0 rated |
| Couplings | PA6 UL 94 V-O rated |
| Couleur(coil) | Orange |
| Shielded | 100% coil, 100% output cable |
Safety
| Certifications | CE marked |
| Complies with LVD EN 61010-1:2010 EMC EN 61326-1:2013 |
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| IP68 | |
| Voltage insulation | Coil: 1000V |
| Signal cable:1000V | |
| Safety | 1000V CATIII ,600V CATIV |
UN,B,C,F:±1millimètre, D:±0.2millimètre,E:±10millimètre
| Dimensions(millimètre) | MRC-16 | MRC-24 | MRC-36 |
| A.Windows size A | 22 | 27.5 | 36 |
| B.Windows size B | 16 | 24 | 37 |
| C.Coil O.D. | 34 | 39.5 | 48 |
| D.Coil section | 6 | ||
| E.Lead Cable Total Length | 2000 | ||
| F:Coil length | 80 | 97 | 130 |
Safety and warning notes
In order to guarantee safe operation of the transducer and to be able to make proper use of all features and functions,please read these instructions thoroughly!Safe operation can only be guaranteed if the transducer is used for the purpose it has been designed for and within the limits of the technical specifications.Ensure you get up-to-date technical information that can be found in the latest associated datasheet, please click below link.
Caution!Risk of danger
Ignoring the warnings can lead to serious injury and/or cause damage!
The electric measuring transducer may only be installed and put into operation by qualified personnel that have received an appropriate training,The corresponding national regulations shall be observed during installation and operation of the transducer and any electrical conductor.The transducer shall be used in electric/electronic equipment the respect to applicable standards and safety requirements and in accordance with all the related systems and components manufacturers’ operating instructions.
Caution!Risk of electrical shock
When operating the transducer,certain parts of the module may carry hazardous live voltage(e.g.primary conductor).The user shall ensure to take all measures necessary to protect against electrical shock.The transducer is a build-in device containing conducting parts that shall not be accessible after installation.A protective enclosure or additional insulation barrier may be necessary.Installation and maintenance shall be done with the main power supply disconnected except if there are no hazardous live parts in or in close proximity to the system and if the applicable national regulations are fully observed.
Safe and trouble-free operation of this transducer can only be guaranteed if transport,storage and installation are carried out correctly and operation and maintenance are carried out with care.
WARING!
Do not stress the coil by applying any kind of mechanical force(ie.twisting,puncturing,excessive pressure,tight bending,etc.) which will dramatically degrade the device’s accuracy.
Order code
Coil:
| Coil Model | Coil diameter (millimètre) | Output ratio and tolerance | Signal cable length |
| Code:Y-FCT | Code:200(Typical rated 500A) Code:350(Typical rated 1500A) Code:510(Typical rated 3kA) Code:800(Typical rated 10kA) Y-FCT code is length. |
Code:110 110mV/[Protégé par e-mail]±5% Code:100 100mV/[Protégé par e-mail]±0.5% Code:85 85mV/[Protégé par e-mail]±0.5% Code:50 50mV/[Protégé par e-mail]±0.5% |
Code:-2m Code:-5m Code:-10m Code:-20m |
| Code:NRC | Code:100(Typical rated 1kA) Code:150(Typical rated 3kA) Code:200(Typical rated 6kA) |
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| Code:MRC | Code:16(Typical rated 100A) Code:24(Typical rated 300A) Code:36(Typical rated 600A) |
Code:60 60mV/[Protégé par e-mail]±5% Code:50 50mV/[Protégé par e-mail]±0.5% |
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| Code:SRC | Code:50 Code:100 Code:150 |
Code:360 360mV/[Protégé par e-mail]±5% Code:333 333mV/[Protégé par e-mail]±0.5% Code:100 100mV/[Protégé par e-mail]±0.5% Code:85 85mV/[Protégé par e-mail]±0.5% Code:50 50mV/[Protégé par e-mail]±0.5% |
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| Other requirement could be OEM | |||
Final Code=Coil model+Diameter(Y-FCT is coil length)+Output ratio+Signal cable length
Par exemple:
NRC-150-100-2m is NRC connector,diameter 150mm,output 100mV/[Protégé par e-mail] 0.5% tolerance,signal cable length is 2meter.
Integrator:
| Integrator | Output form | Output value | Courant nominal | Source de courant |
| Code:D1 (DIN-RAIL integrator) |
Code: .1(AC voltage output) Code: .2(DC voltage output) |
Code: -333(333mV) Code: -1(1V) Code: -5(5V) |
Code: -600UN Code: -1kA Code: -3kA Code: -6kA |
Code: -12(12À DC) Code: -24(24À DC) |
| Code: .3(4-20mA output) | N / A | |||
| Code:S9 (mini integrator) |
Code: .1(AC voltage output) Code: .2(DC voltage output) |
Code: -333(333mV) Code: -1(1V) Code: -3(3V) |
Code: -12(6-12À DC) Code: -24(24À DC) |
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| Code:S1 (high accuracy integrator) |
Code: .1(AC voltage output) Code: .2(DC voltage output) |
Code: -333(333mV) Code: -5(5V) Code: -10(10V) |
Code: -12(4-12À DC) Code: -24(24À DC) |
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| Code: .3(4-20mA output) | N / A | |||
| Code:ATP-01 (1A output three phase integrator) |
N / A(0-1UN) | N / A | Code: -12(12À DC) Code: -24(24À DC) |
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| Code:A01 (1A output integrator) |
N / A(0-1UN) | N / A | N / A(85-265V AC DC) | |
| Code:A05 (5A output integrator) |
N / A(0-5UN) | N / A | N / A(85-265V AC DC) | |
| Code:HF (high frequency integrator) |
N / A(0-10VAC peak) | N / A | Code: -1kA(1kA/1V) Code: -10kA(10kA/1V) |
N / A(4-12À DC) |
| Other requirement could be OEM | ||||
Final Code=Integrator+Output form+Output value+Rated current+Power supply
Par exemple:
D1.1-1-500A-12 is D1 integrator,AC voltage output,500A rated,output 1V,power supply 12V DC
A01-1kA is A01 integrator,rated 1kA,output 1A,power supply 85-265V AC DC
