Product Overview
The LEM ART Series Split Core Rogowski Coil is an accurate, reliable, and easy-to-install energy sensor designed for Smart City applications. It provides galvanic separation between the primary and secondary circuits for the electronic measurement of AC current. Featuring patented Perfect Loop Technology, it significantly reduces positioning errors and errors due to external conductors. This flexible, thin, and lightweight solution offers quick, non-intrusive setup and is adaptable to a wide range of cable diameters, making it ideal for MV/LV substations, power metering, building sub-metering, power quality monitoring, fault detection, and use with RTUs and PMUs.
Product Attributes
- Brand: LEM
- Series: ART Series
- Type: Split Core Rogowski Coil
- Output Signal: 22.5 mV/kA
- Certifications: IEC 61010-1, IEC 61010-2-32, IEC 61869-1, IEC 61869-2, IEC 61869-6, IEC 61869-10, UL 61010-1
- Insulation Voltage: 1000 V Cat III PD2
- Protection Degree: IP57
- Case Material: V0 (According to UL 94)
- Output Cable Termination: 2 stripped wires
- Intended Use: Indoor applications
Technical Specifications
| Parameter | Symbol | Unit | ART-B22-D70 | ART-B22-D125 | ART-B22-D175 | ART-B22-D300 | Comment |
|---|---|---|---|---|---|---|---|
| Sensing Aperture Diameter | mm | 70 | 125 | 175 | 300 | ||
| Output Cable Length | m | 1.5 | 1.5 | 1.5 | 1.5 | Other lengths available | |
| Ambient Operating Temperature | TA | C | 40 to 80 | ||||
| Ambient Storage Temperature | TS | C | 40 to 80 | ||||
| Relative Humidity (non-condensing) | RH | % | 0 to 90 | ||||
| Mass (with 1.5 m cable) | m | g | 124 | 130 | 138 | 155 | |
| Rated Transformation Ratio | kra | kA/V | 44.44 @ 50 Hz | ||||
| Rated Frequency | fr | Hz | 50/60 | ||||
| Secondary Voltage | US | mV | 22.5 @ 50 Hz, IP = 1 kA | ||||
| Mutual Inductance | M | nH | 71.98 | 72.14 | 72.31 | 72.84 | |
| Temperature Coefficient of M | TCM | ppm/K | 30 | ||||
| Frequency Bandwidth (3 dB) | BW | kHz | 420 | 373 | 350 | 300 | |
| Phase Displacement | 0.004 @ 50/60 Hz | ||||||
| Coil Inductance | LS | H | 180 | 258 | 343 | 566 | |
| Coil Resistance | RS | 56 | 81 | 105 | 170 | ||
| Ratio Error (centered) | % | 0.5 to 0.5 | Class 0.5 accuracy according to IEC 61869-2 | ||||
| Ratio Error (all positions) | % | 0.75 to 0.75 | Including positioning error | ||||
| Linearity Error | L | % | None | ||||
| Influence of External Current | I ext | % | 0.2 to 0.4 | ||||
| Rated Primary Current | IPr | A | Not applicable | No saturation effect | |||
| Rated Short-time Thermal Current | Ith | kA | 300 @ 50 Hz | ||||
| Rated Insulation Voltage | V, Hz, CAT, PD | 1000 V, 50/60 Hz, CAT III, PD2 | |||||
| Impulse Withstand Voltage | UW | kV | 12.8 | 1.2/50 s | |||
| Partial Discharge RMS Test Voltage | Ut | kV | 1.65 | (qm < 10 pC) | |||
| Clearance (pri. - sec.) | dCI | mm | > 16 | Shortest distance through air | |||
| Creepage distance (pri. - sec.) | dCp | mm | > 16 | Shortest path along device body | |||
2411220612_LEM-ART-B22-D175_C6862010.pdf
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