Split-core transducers for measurement of high DC currents

Electrical Power & Protection

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

Share this article:

World’s fastest 14-bit arbitrary waveform generator
Vepac Electronics Electrical Power & Protection
The ARB Rider AWG-7000 is the world’s fastest 14-bit arbitrary waveform generator, with a 20 GS/s real time update rate and 14-bit vertical resolution. Thanks to Simple Rider software, it offers best-in-class performances and an easy to use interface.

Read more...

Steam on demand
Electrical Power & Protection
Rental boilers are increasingly popular, offering the convenience of on-demand power and heat without the commitment of a permanent installation. They are an ideal solution while a customer awaits repairs, or only needs a boiler for a particular period, or does not have the capital to invest upfront.

Read more...

High-voltage backup power solutions
Electrical Power & Protection
Businesses are facing increasing pressure to rethink their approach to power. As a result, there’s been a significant uptick in interest in high-voltage installations, either as standalone battery energy storage systems, or as solar installations feeding into battery storage.

Read more...

Rotary friction welding – a first for Tutuka power station
Electrical Power & Protection
Steinmüller Africa has successfully used rotary friction welding in a project with engineering consultant, eNtsa. This innovative technique was applied to fabricating four headers used for high-pressure water heater boiler units installed at Tutuka power station in Mpumalanga.

Read more...

Why it is vital to size soft starters carefully
WEG Africa Electrical Power & Protection
The application of soft starters has become a well-established strategy to improve the uptime and lifespan for motors and mechanical equipment driven by motors, but they need to be chosen carefully.

Read more...

Changeover switch between two power supplies
Schneider Electric South Africa Electrical Power & Protection
Schneider Electric South Africa has unveiled the Resi9 Changeover Switch product range which provides the perfect solution to switch manually between two power supplies or circuits.

Read more...

Partial discharge monitoring solution for MV switchgear
Schneider Electric South Africa Electrical Power & Protection
Schneider Electric South Africa has unveiled its PowerLogic PD100 Partial Discharge Monitoring Solution, designed to be installed on MV switchgear to detect anomalies early, to prevent unplanned downtime.

Read more...

ABB production site reduces total emissions by 80%
Electrical Power & Protection
Continuing its commitment to sustainable manufacturing, ABB’s Mexican production site for load centres and safety switches in Saltillo has reduced emissions by 80% in the past two years.

Read more...

Electrical Power & Protection

Split-core transducers for measurement of high DC currents

Further reading:

Published by Technews