ART-B22-D70/SP3

Current Sense Transformers Overview

The ART-B22-D70/SP3 is a Rogowski coil current transformer from the LEM ART series, designed for electronic measurement of alternating currents. It features a split-core design with a nominal input rating of 1000 A and an output sensitivity of 22.5 mV/kA. The device operates at frequencies of 50 Hz and 60 Hz, presenting an impedance of 55 Ohm and an inductance of 180 µH. It achieves Class 0.5 accuracy per IEC 61869 standards and offers IPx7 protection. The unit measures 56.01 mm in length, 33.69 mm in width, and 18.91 mm in height, utilizing a free-hanging in-line mounting style.

Current Sense Transformers Feature Summary

• Flexible split-core construction allows for easy installation around existing busbars or cables without disconnecting the primary circuit.
• Thin and lightweight profile facilitates integration into compact electrical assemblies and reduces overall system weight.
• IPx7 rated enclosure ensures reliable operation in environments requiring protection against temporary immersion in water.
• Rogowski coil technology provides high linearity and immunity to magnetic saturation effects common in traditional transformers.

Current Sense Transformers Applications

• Electronic measurement of AC currents in industrial power distribution systems
• Integration into smart meters and energy monitoring devices
• Current sensing in variable frequency drives and motor control applications
• Power quality analysis equipment requiring high-accuracy waveform capture

Current Sense Transformers Procurement Notes

Verify that the required operating frequency matches the component's 50 Hz / 60 Hz specification. Confirm that the primary conductor fits within the split-core aperture dimensions. Ensure the downstream signal conditioning circuitry can process the 22.5 mV/kA output level. Check environmental requirements against the IPx7 rating if moisture exposure is anticipated. Validate mechanical clearance for the specified package dimensions during installation.

Current Sense Transformers Selection Notes

Choose this model when a non-invasive measurement solution is required for AC current monitoring up to 1000 A. The split-core design is ideal for retrofitting existing installations where breaking the circuit is impractical. Select this variant if Class 0.5 accuracy meets the application's precision needs. Consider the flexible form factor for routing around irregularly shaped conductors or tight spaces.

Current Sense Transformers Part Context

This component belongs to the LEM ART series, which specializes in Rogowski coil current sensors. The series covers a wide range of input ratings from 10 A to 10000 A RMS. These sensors are engineered for modern electronic measurement systems, offering advantages over traditional iron-core transformers such as reduced size, weight, and improved dynamic response characteristics for AC applications.

Current Sense Transformers Replacement Considerations

Direct substitutes must match the 1000 A input rating, 22.5 mV/kA output, and split-core architecture. Verify compatibility with 50/60 Hz operation and Class 0.5 accuracy. Ensure the replacement maintains similar physical dimensions for mounting fitment. Cross-reference specific ordering suffixes to confirm identical packaging and configuration options.

Current Sense Transformers FAQ

Is this sensor suitable for measuring DC currents?

No, the ART-B22-D70/SP3 is a Rogowski coil designed specifically for AC current measurement at 50 Hz and 60 Hz frequencies. It cannot measure direct current (DC).

What is the maximum current rating of this sensor?

The nominal input rating for the ART-B22-D70/SP3 is 1000 A RMS.

Does the split-core design affect the accuracy class?

The sensor maintains a Class 0.5 accuracy according to IEC 61869 standards despite its split-core construction, ensuring reliable performance for electronic measurement applications.