Isolated voltage transducers for traction applications
12 March 2003
Test & Measurement
For 30 years, LEM has used Hall effect technology for its voltage transducers supplied to the industrial and railway traction markets. Today, the trend is to save space while maintaining or improving performance. To achieve this, LEM has now applied isolating amplifier technology, giving birth to the AV 100 series of voltage transducers.
AV100 series allows DC, AC, pulsed and complex voltage measurements with galvanic isolation between primary (high power) and secondary circuits (electronic circuits).
In addition to the space saving (around 271 cm3 volume saved vs usual Hall effect technology-based voltage transducers), they provide a large dynamic (response time at 10% of VPMAX up to 13 µs) allowing wide bandwidth (up to 13 kHz) in a unique and compact design to cover voltage measurements from 50 to 1500 V r.m.s. nominal. 50 mA are supplied at the AV100's outputs as current output when the nominal primary voltage is applied on the M5 threaded studs primary connections. A dual fastening mode is proposed for secondary connections, either 3 x M5 threaded studs for 'secure' and robust connection or 3 x Faston (6,35 x 0,8 mm) for quick installation.
Mainly used in traction applications such as main and auxiliary converters, sub-stations and battery chargers, for example, the AV 100 series is also the ideal tool for voltage measurement in industrial applications.
All transducers are CE marked, which guarantees compliance with the European EMC directive 89/336/EEC. EN50155 standard is the reference used at LEM to guarantee the overall performance of the transducers in traction environment for electrical, environmental and mechanical parameters. The AV 100 series also complies with the EN50124-1 (insulation levels), NFF 1610/2 (fire and smoke classification) standards.
Further reading:
AI Experts provide product-specific intelligence
Measuretest
Test & Measurement
VIAVI Solutions has announced AI Experts, the first addition to its NITRO AI portfolio of AI-driven capabilities with each Expert providing product-specific intelligence.
Read more...
Rugged spectrum analyser
Vepac Electronics
Test & Measurement
The HAROGIC PXR Series is designed for maximum durability and performance in the most demanding environments.
Read more...
Setting a new benchmark for high-power DC load testing
Conical Technologies
Test & Measurement Power Electronics / Power Management
The new ITECH IT8900G/L high-speed, high-power DC electronic load offers a powerful combination of speed, scalability, precision and high-power density.
Read more...
Locate underground cable faults faster with the Fluke AF2082 A-Frame
Comtest
Editor's Choice Test & Measurement
Underground cable faults can lead to costly downtime, service disruptions, and extensive excavation if the fault location is uncertain. The AF2082 simplifies this process by guiding operators directly to the fault point.
Read more...
Precision power for electronics testing
Vepac Electronics
Test & Measurement
The PeakTech 6168 switching power supply is a versatile and reliable solution designed for professional applications in laboratories, development environments, service centres, and training facilities.
Read more...
12-bit 1-wire temperature sensing
RS South Africa
Test & Measurement
The DS18B20 digital thermometer from Analog Devices provides 9-bit to 12-bit Celsius temperature measurements in the range -55°C to 125°C.
Read more...
Ultra-fast wideband RF insight
Vepac Electronics
Test & Measurement
The Harogix PXE-200 is a high-performance real-time spectrum analyser designed for demanding RF environments up to 20 GHz.
Read more...
Field calibration made easy
Instrotech
Test & Measurement
Built around modern component technology, an intuitive interface, and a rugged IP54-rated housing, Instrotech’s Calog series is engineered for the demands of real industrial field calibration work.
Read more...
Rugged two-pole voltage tester
Vepac Electronics
Test & Measurement
A key advantage of the PeakTech 1094 is its battery-free operation, ensuring the tester is always ready for use whenever required by professional electricians or maintenance personnel.
Read more...
Rapid IoT prototyping simplified
Future Electronics
Test & Measurement
The STEVAL-MKBOXPRO from STMicroelectronics is a compact, ready-to-use wireless development kit designed to accelerate the creation of intelligent IoT and wearable applications.
Read more...
printer friendly version