Analysis
Compact panel-mounted current transducers
LEM has added the HASS series to its range of current transducer families designed to operate from a single +5V power supply. The seven units offer maximum current measurements from 50 to 600ARMS, and share the same mechanical design, measuring only 40 x 30 x 32.5mm with a 20.4 x 10.4mm aperture for the primary conductor. The transducers weigh only 55g, an important feature for panel-mounting applications.
A LEThe internal reference voltage (2.5V) is provided on a separate contact (of the Molex 5045-04A connector) or can be forced by an external reference (between 2 and 2.8V) for reference thermal drift cancellation. Gain and offset are fixed and set so that, at Ipn, the output voltage is equal to Ref in or Ref out ±0.625V.
The HASS series transducers are CE marked, conform to the EN 50178 standard (recognised for industrial applications) and are provided with a five-year warranty, as are all LEM industrial products.