HMS: The new LEM Surface Mounted transducer

Main characteristics:

· 4 standard models

· Currents' measurement from 5 to 20 A_RMS nominal

· Unique design for all the models

· Small size: 16(L) x 13.8(W) x 12(H) mm

· Light: 6 g

· Operating temperature range: -40 to +85°C

· 5 years warranty

Features:

· Accurate (1 % of I_PN at 25°C without offset)

· DC, AC and pulse currents measurements with galvanic isolation

· Single supply +5 V

· Primary conductor integrated

· 8mm creepage and clearance distances +CTI 600 / Isolation test voltage: 4.3 KV_RMS / 50 Hz / 1 min

· Voltage output

· Fixed offset and gain

· Reference access

· Open Loop technology combined with ASIC

Standard Compliance:

· EN50178 for industrial applications such as:

§ Home appliances

§ Variable speed drives

§ UPS's

§ SMPS's

§ Air conditioners

§ Solar/Windmill inverters

§ Welding applications…

· UL 508 (UR marking)

· European Directive EMC 2004 / 108 / EEC: CE Marking

· Using UL94-VO recognized materials

· Low voltage directive 2006/95/EEC

· Safety IEC 61010-1

Remarks:

· HMS brings an additional pin, at the output for more flexibility in applications. This pin provides access to the internal voltage reference of the ASIC which can then be fed to the reference of an A/D converter (Analog Digital). This extra pin can also receive the internal reference (from 1.5 to 2.8 V) of the DSP (Digital Signal Processor) or A/D converters commonly used in power electronics, allowing cancellation of the reference temperature drift.

· HMS is non-potted.