Split-core transducers for measurement of high DC currents
August 2017
Electrical Power & Protection
Complementing LEM’s range of products for advanced battery management applications, the new DH family of DC current transducers offers precise measurement of bipolar currents up to 2000 A. Measuring only 174 x 86 x 54 mm, these compact split-core transducers combine Hall-effect technology and signal conditioning in a single housing with a large rectangular sensing aperture for non-contact measurement.
The DH series has been designed to measure DC currents and their polarity. It offers a choice of primary current measurement ranges from 500 A to 2000 A and provides an absolute accuracy better than one percent of the nominal current value. The new transducers output the bipolar measurement value through an industry standard 4-20 mA output. They feature a loop-powered circuit (adapted to 20-30 VDC power supplies) that reduces installation costs by minimising the wiring and connections required. The DH family is an excellent choice for industrial system designers, integrators and resellers who require accurate and cost-effective DC current transducers. As with all other LEM products, the DH transducers benefit from the company’s proven high-quality approach to manufacturing and are backed by a five-year guarantee.
Applications include management of UPS systems and standby batteries, DC power generation and distribution as well as monitoring DC motors and process control systems. The performance and reliability of the DH transducers have been validated in a number of installations where the transducers monitor charge and load currents of standby batteries in large UPS systems as well as in telecommunication base stations.
For more information contact Denver Technical Products, +27 (0)11 626 2023, [email protected], www.denver-tech.co.za
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