Current transducers measure up to 250 A

Test & Measurement

16 July 2014 Test & Measurement

LEM has released three new HO series high-performance current transducers which extend nominal current measurement up to 250 A and come in PCB, panel or busbar mounting.

The transducers measure DC, AC and pulsed signals using the latest generation of LEM’s open-loop Hall effect ASIC. The new models exhibit 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 V or 5 V, the HO series can measure up to 2,5 times the primary nominal current and includes an additional pin which provides over-current detection set at 2,93 times the nominal current IPN (peak value). Fault reporting is also provided in the event of memory corruption.

Extended clearance and creepage distances of more than 8 mm, together with a comparative tracking index (CTI) of 600, mean that, despite small packages of 22,95 cc to 33,15 cc, there is no compromise on the insulation level provided between the primary and measurement circuits.

The range of options offered by HO transducers makes them suitable for a wide selection of applications, including solar combiner boxes and solar power inverters, small smart meters, variable speed drives, uninterruptible and switch-mode power supplies, air conditioning, home appliances, static converters for DC motor drives, and robotics.

A wide operating temperature range of -40°C to +105°C also makes the HO series suitable for use in any industrial application. The transducers are CE marked and conform to the EN 50178 standard as well as being covered by a five-year warranty.

Share this article:

Omniflex uses LoRaWAN to track water usage
Omniflex Remote Monitoring Specialists Test & Measurement
Omniflex has helped New South Wales Ports improve its ability to track water usage by installing remote monitoring to 38 water meters at its Port Kembla site, sending the data to the NSWPorts web portal.

Read more...

Surviving the extremes: Understanding shock and vibration in MEMS sensors
Altron Arrow Editor's Choice Test & Measurement
By considering factors such as mechanical headroom, damping, and system-level robustness, designers can ensure that the chosen sensor not only survives, but performs reliably over time.

Read more...

Advanced pressure monitoring sensor
EBV Electrolink Test & Measurement
The Infineon KP497 is an advanced, highly integrated digital pressure sensor designed for demanding automotive and industrial applications, with a particular focus on battery management systems.

Read more...

Slimline 150 W bench PSU
Vepac Electronics Test & Measurement
The PeakTech P 6222 is the company’s new, slim laboratory power supply that offers precisely adjustable output values of 30 V and 5 A with a continuous power output of 150W.

Read more...

Redefining edge intelligence in RF analysis
Vepac Electronics Test & Measurement
The HAROGIC PXR Series bridges the gap between benchtop-grade RF performance and high-performance edge computing.

Read more...

Otto Wireless appointed as sole agent for Dragino Technology
Otto Wireless Solutions Test & Measurement
Dragino is a globally recognised leader in LoRaWAN and Internet of Things products and solutions, and is known for delivering reliable, cost-effective hardware.

Read more...

Categories

Test & Measurement

Current transducers measure up to 250 A

Further reading:

Publications by Technews