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 for a wide range of cable diameters, making it ideal for MV/LV substations, power metering, building sub-metering, power quality monitoring, fault detection, RTUs, and PMUs.
Product Attributes
- Brand: LEM
- Series: ART Series
- Technology: Perfect Loop Technology
- Certifications: IEC 61010-1, IEC 61010-2-32, IEC 61869-1, IEC 61869-2, IEC 61869-6, IEC 61869-10, UL 61010-1
- Case Material: V0 (According to UL 94)
- Output Signal: 22.5 mV/kA
- 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 |
|---|---|---|---|---|---|---|---|
| Rated Insulation Voltage | V Cat III PD2 | 1000 | |||||
| Accuracy Class | 0.5 | (IEC 61869-2) | |||||
| Protection Degree | IP57 | ||||||
| Sensing Aperture Diameter | mm | 70 | 125 | 175 | 300 | ||
| Output Cable Length | m | 1.5 (other lengths available) | |||||
| Ambient Operating Temperature | TA | C | 40 to 80 | ||||
| Coil Diameter | mm | 6.1 | Very flexible and thin coil | ||||
| Mutual Inductance | M | nH | 71.98 | 72.14 | 72.31 | 72.84 | |
| Frequency Bandwidth (3 dB) | BW | kHz | 420 | 373 | 350 | 300 | (Cable length: 1.5 m) |
| 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 | ||||
| Influence of External Current | I ext | % | 0.2 to 0.4 | ||||
| Rated Short-time Thermal Current | Ith | kA | 300 @ 50 Hz | ||||
| Mass (1.5m cable) | m | g | 124 | 130 | 138 | 155 | |
| Rated Transformation Ratio | kra | kA/V | 44.44 @ 50 Hz | ||||
| Secondary Voltage | US | mV | 22.5 @ 50 Hz, IP = 1 kA | ||||
2411220612_LEM-ART-B22-D300_C6465785.pdf
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