Product category:
Sensors and Data Acquisition
News Release from: LEM UK | Subject: AHR series
Edited by the Electronicstalk Editorial
Team on 08 May 2006
Current transducers extend range to 2kA
AC and DC current transducers offer versatile and precise measurement of nominal currents up to 2000A true RMS.
The AHR series of AC and DC current transducers that offer versatile and precise measurement of nominal currents up to 2000A true RMS, extending the existing LEM family that ranges from 100 to 1000A These split-core transducers combine Hall-effect technology and signal conditioning in a compact case to offer substantial savings in size (more than 50% compared with existing current transformers)
This article was originally published on Electronicstalk on 22 Apr 2002 at 8.00am (UK)
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Current sensors slip on in a trice
LEM has three families of split-core current sensors that can be clamped around a busbar or cable without moving the conductor.
Speedy installation for current transducers
LEM has new families of current transducers with an innovative design that dramatically reduces installation time.
They measure only 174 x 86 x 54.1mm.
Devices in the AHR series have been designed to measure DC signals as well as distorted current waveforms such as variable frequency drive (VFD) outputs.
They offer a choice of primary current measurement ranges from 500 to 2000A, a choice of standard output types (4-20mA, 0-5V or 0-10V), a wide power supply range (20 to 50V DC) and large sensing apertures for noncontact measurement (104 x 40mm busbar, in addition to a 32mm-diameter cable version).
The new transducers provide an absolute accuracy better than 1% of the nominal current over a broad range of inputs.
This, coupled with a wide bandwidth from DC to 6kHz, an operating range of -40 to +70C and true RMS computation for nonlinear loads or "noisy" environments, makes them an excellent choice for industrial system designers, system integrators and automation distributors looking for accurate and cost-effective AC or DC current transducers.
As with all other LEM products, the AHR series products benefit from the company's proven high-quality approach to manufacturing and are backed by a five-year guarantee.
Principal applications are expected to be in the monitoring of switching power supplies and electronic ballasts, main AC power supplies and large AC or DC motors.
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