Electrical Power & Protection


Extended range current transducers

August 2014 Electrical Power & Protection

LEM has announced the addition of three new HO series high performance current transducers which extend nominal current measurement up to 250 A supported by a range of mounting options.

HO series current transducers measure DC, AC and pulsed signals using the latest generation of LEM’s Open-loop Hall-effect Application Specific Integrated Circuit (ASIC) which was introduced with the launch of the HO 8, 15, 25-NP and NSM series and the HO 6, 10 and 25-P models. The new series offer offset and gain drifts which are up to twice as accurate across the temperature range as the previous generation and have a faster response time of 2,5 to 3,5 μs.

Operating from a single supply voltage of 3,3 or 5 V, the HO series can measure up to x 2,5 the primary nominal current and includes an additional pin that provides over-current detection set at x 2,93 the nominal current. Fault reporting is also provided in the event of memory corruption.

LEM’s ASIC technology enables open loop transducer performance to approach that of closed loop transducers and will improve control and system efficiency at a significantly lower cost.

High clearance and creepage distances of more than 8 mm and a comparative tracking index of 600 mean that, despite the small package sizes, there is no compromise on the insulation level provided between the primary and measurement circuits.

The comprehensive range of options offered by HO transducers makes them suitable for a wide selection of applications where high performance and mounting flexibility are required. These applications include solar combiner boxes and solar power inverters, as well as small smart meters, variable speed drives, uninterruptible and switch-mode power supplies, air conditioning, home appliances, static converters for DC motor drives and robotics. The wide operating temperature range of -40 to 105°C also makes the HO series suitable for use in any industrial application. All devices are CE marked and conform to the EN 50178 standard.



Credit(s)



Share this article:
Share via emailShare via LinkedInPrint this page

Further reading:

UPS for mission critical applications
Electrical Power & Protection
Eaton’s new 9395P high-performance UPS is a must to ensure business continuity and operational efficiency.

Read more...
Parallel redundancy power module
Electrical Power & Protection
Mornsun Power has released its upgraded LIR-20 Din-rail parallel redundancy module.

Read more...
Dry-type transformers for dairy expansion
Electrical Power & Protection
Trafo Power Solutions has assisted a large dairy producer in a recent expansion, supplying five dry-type distribution transformers to its facilities in a coastal region of South Africa.

Read more...
Legrand’s UPS solutions for data centres
Legrand Electrical Power & Protection
Continuity of operations during power outages is critical in all sectors of business and has become even more important in digital environments like data centres.

Read more...
Inverters for PV generation plants
Zest WEG Electrical Power & Protection
As solar energy contributes increasingly to cleaner, renewable energy for a more sustainable world, WEG has introduced its complete ESW line of central inverter stations for photovoltaic power generation plants.

Read more...
Electronic transformers for special requirements
ASSTech Process Electronics + Instrumentation Electrical Power & Protection
The Jumo IPC 300 electronic transformer was developed for the control of heating loads that previously required an additional transformer for power control.

Read more...
Dairy expansion uses dry-type transformers
Electrical Power & Protection
Trafo Power Solutions has assisted a large dairy producer in a recent expansion, supplying five dry-type distribution transformers to its facilities in a coastal region of South Africa.

Read more...
Controlling power generation with TwinCAT software
Beckhoff Automation Electrical Power & Protection
Researchers are implementing innovative new control methods on Beckhoff embedded PCs running TwinCAT to validate their grid-forming control methods.

Read more...
Type 2 push-in surge protection
Phoenix Contact Electrical Power & Protection
The VAL-MS PT surge protective device from Phoenix Contact is its first type 2 protective device with push-in connection technology.

Read more...
Energy data acquisition made easy
Phoenix Contact Electrical Power & Protection
By developing the new components of the EMpro product family, Phoenix Contact has found a solution that satisfies most energy data gathering applications.

Read more...