INDOOR ROGOWSKI COIL FOR ELECTRONIC MEASUREMENT
The ART series is an indoor flexible clip-around Rogowski coil for the electronic measurement of AC current with galvanic separation between the primary circuit (power) and the secondary circuit (measurement). The patented Perfect Loop Technology dramatically reduces both the error due to the position of the measured conductor within the aperture, and the error due to the proximity of external conductors.
In addition, the ART series internal shield allows for an enhanced measurement accuracy at low primary current.
That Rogowski coil technology series of products are designed for both industrial and smart grid application domains.
ART Series - FEATURES AND BENEFITS
Main characteristics
- Class accuracy 0.5 according to IEC 61869
- Better than 0.75% accuracy regardless of the primary conductor’s position
- Rated insulation voltage 1kV CATIII
- From 10 to 10000 ARMS
- Thin, light and flexible split-core current sensor for easy installation anywhere
- Almost perfect linearity, no saturation, no upper limit in current rating
- Internal shield
- Low output voltage proportional to the rate of change (derivative) of the primary current (electronic integrator required): 22.5 mV/kA @ 50Hz
Features
- 6.1 mm gauge with sensing apertures of Ø 35mm to 300mm
- Bandwidth: 50/60 Hz, up to 700kHz in open circuit condition (no load)
- Operating range: -40°C to +80°C
- Fast clip-on mounting whilst cable is connected
- Slot expected to fix the loop on conductor with a cable tie
- Ø 2 mm hole to pass a security seal
Typical applications
- Secondary distribution substations
- Distribution transformer monitoring
- Phasor Measurement Units (PMU)
- Commercial and industrial buildings
- Metering and sub-metering
- Demand response (DR)
- Distribution system equipment
ART Series - Download & Technical characteristics
| Product | Order | Document | Nominal Value | Op. Temperature | Output voltage | Aperture | Output cable length |
|---|---|---|---|---|---|---|---|
| ART-B22-D70 | Datasheet 3D User guide | 1000 A | -40 °C / 80 °C | 22,5 mV/kA | 70 mm | 1,5 m | |
| ART-B22-D70/SP3 | Datasheet | 1000 A | -40 °C / 80 °C | 22,5 mV/kA | 70 mm | 3 m | |
| ART-B22-D70/SP6 | Datasheet | 1000 A | -40 °C / 80 °C | 22,5 mV/kA | 70 mm | 6 m | |
| ART-B22-D125 | Datasheet 3D User guide | 1000 A | -40 °C / 80 °C | 22,5 mV/kA | 125 mm | 1,5 m | |
| ART-B22-D125/SP25 | Datasheet 3D | 1000 A | -40 °C / 80 °C | 22,5 mV/kA | 125 mm | 3 m | |
| ART-B22-D125/SP4 | Datasheet | 1000 A | -40 °C / 80 °C | 22,5 mV/kA | 125 mm | 4,5 m | |
| ART-B22-D125/SP6 | Datasheet | 1000 A | -40 °C / 80 °C | 22,5 mV/kA | 125 mm | 6 m | |
| ART-B22-D175 | Datasheet 3D User guide | 1000 A | -40 °C / 80 °C | 22,5 mV/kA | 175 mm | 1,5 m | |
| ART-B22-D175/SP3 | Datasheet | 1000 A | -40 °C / 80 °C | 22,5 mV/kA | 175 mm | 3 m | |
| ART-B22-D300 | Datasheet User guide | 1000 A | -40 °C / 80 °C | 22,5 mV/kA | 300 mm | 1,5 m | |
| ART-B22-D300/SP4 | Datasheet | 1000 A | -40 °C / 80 °C | 22,5 mV/kA | 300 mm | 4,5 m |
ART Rogowoski coils - Technical articles
LEM has gathered additional technical resources to go further on the subject of rogowski coils for indoor applications.
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