Rogowski Coils: Rogowski coils have been used for the detection and measurement of electric currents for decades. They are based on a simple principle where 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.
ERC-V250-100
First generation Rogowski Coil, output 100mV/kA, 50-60 Hz, Ø 115 mm
ERC-V250-100 shielded coil have been designed for accurate non-intrusive measurement of AC, pulsed DC or complex waveforms This type of transducer may be used to measure all AC current from low frequencies to 5 kHz.
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Order code : |
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ERC-V250-100 |
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Description: |
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First generation Rogowski Coil, output 100mV/kA, 50-60 Hz, Ø 115 mm |
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Cable lenght: |
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2 m |
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Coil lenght: |
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250 mm |
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Operating temp.: |
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-20..+70°C |
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Output: |
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100mV/kA @ 50 Hz |
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Accuracy: |
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±1% |
ERC-V400-050
First generation Rogowski Coil, output 50mV/kA, 50-60 Hz, Ø 115 mm
ERC-V400-050 shielded coil have been designed for accurate non-intrusive measurement of AC, pulsed DC or complex waveforms This type of transducer may be used to measure all AC current from low frequencies to 5 kHz.
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Order code : |
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ERC-V400-050 |
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Description: |
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First generation Rogowski Coil, output 50mV/kA, 50-60 Hz, Ø 115 mm |
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Cable lenght: |
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2 m |
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Coil lenght: |
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400 mm |
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Operating temp.: |
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-20..+70°C |
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Output: |
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50mV/kA @ 50 Hz |
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Accuracy: |
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±1% |
ERC-V400-100
First generation Rogowski Coil, output 100mV/kA, 50-60 Hz, Ø 115 mm
ERC-V400-100 shielded coil have been designed for accurate non-intrusive measurement of AC, pulsed DC or complex waveforms This type of transducer may be used to measure all AC current from low frequencies to 5 kHz.
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Order code : |
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ERC-V400-100 |
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Description: |
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First generation Rogowski Coil, output 100mV/kA, 50-60 Hz, Ø 115 mm |
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Cable lenght: |
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2 m |
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Coil lenght: |
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400 mm |
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Operating temp.: |
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-20..+70°C |
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Output: |
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100mV/kA @ 50 Hz |
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Accuracy: |
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±1% |
ERC-V500-100
First generation Rogowski Coil, output 100mV/kA, 50-60 Hz, Ø 147 mm
ERC-V500-100 shielded coil have been designed for accurate non-intrusive measurement of AC, pulsed DC or complex waveforms This type of transducer may be used to measure all AC current from low frequencies to 5 kHz.
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Order code : |
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ERC-V500-100 |
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Description: |
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First generation Rogowski Coil, output 100mV/kA, 50-60 Hz, Ø 147 mm |
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Cable lenght: |
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2 m |
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Coil lenght: |
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500 mm |
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Operating temp.: |
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-20..+70°C |
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Output: |
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100mV/kA @ 50 Hz |
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Accuracy: |
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±1% |
ERC150
High performance second generation Rogowski Coils, Ø 8 mm, 100mV/1KA
ERC150 is a flexible current transducer based on Rogowski principle, particularly suitable for measurement in combination with portable devices. ERC150 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. The absence of magnetic core grants a wide frequency response. This make ERC150 particularly suitable for measurement of harmonic content and transients.
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Order code : |
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ERC150 |
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Description: |
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High performance second generation Rogowski Coils, Ø 8 mm, 100mV/1KA |
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Coil length: |
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From 25 to 300 cm |
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Coil diameter: |
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8.3 ±0.2 mm |
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Output level (RMS): |
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100 mV / 1 kA @50Hz (standard) |
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Coil resistance: |
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From 70 to 900 Ω |
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Positioning error: |
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Better than ±1% of reading (with 15 mm diameter cable) |
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Frequency range: |
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Approx 40 Hz to 20 kHz |
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Working voltage: |
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1000 VRMS CAT III; 600 VRMS CAT IV |
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Test Voltage: |
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7400 Vrms/ 1 min |
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Operating Temperature: |
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From -30°C to +80°C |
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Protection Degree: |
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IP67 |
ERC190
High performance second generation Rogowski Coils, Ø 12 mm, 333mV/1KA
ERC190 is a flexible current transducer based on Rogowski principle, particularly suitable for measurement in combination with portable devices. EMFC190 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. EMFC190 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.
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Order code : |
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ERC190 |
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Description: |
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High performance second generation Rogowski Coils, Ø 12 mm, 333mV/1KA |
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Coil length: |
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From 30 to 300 cm |
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Coil diameter: |
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12,4 ±0,2 mm |
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Output level (RMS): |
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333 mV / kA @50Hz |
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Coil resistance: |
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From 300 to 2000 Ω |
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Positioning error: |
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Better than ±1% of reading |
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Working voltage: |
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1000 VRMS CAT III; 600 VRMS CAT IV |
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Test voltage: |
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7400 VRMS / 1 min |
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Operating Temperature: |
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From -30°C to +80°C |
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Protection Degree: |
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IP67 |
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