LEM HASS Panel Mount Current Transducers

LEM HASS Panel Mount Current Transducers are precision devices designed for measuring DC, AC, and pulsed currents from 50A to 600A with high accuracy and reliability. Based on open-loop Hall effect technology, the LEM HASS transducers provide a ratiometric analog voltage output proportional to the measured current, making them ideal for integration into control and monitoring systems. The HASS sensors feature galvanic isolation between the primary circuit and the output, ensuring safety and signal integrity. The HASS transducers deliver fast response times with low offset drift in a compact PCB-mountable design. The devices also comply with stringent environmental and performance standards, offering robust operation across a wide temperature range.

Features

Closed loop (compensated) current transducer
Hall effect measuring principle
Galvanic separation between the primary and secondary circuits
3300V insulation test voltage
Low power consumption
+5V single power supply
Fixed offset and sensitivity
Only one design for a wide current ratings range

High immunity to external interference
Internal and external reference
Printed circuit panel mounting
Easy installation
Small, space-saving size
Insulating plastic case recognized according to UL 94V-0
5-year warranty
RoHS complaint

Applications

AC variable speed drives and servo motor drives
Static converters for DC motor drives
Battery supplied applications

Uninterruptible Power Supplies (UPS)
Switched Mode Power Supplies (SMPS)
Power supplies for welding applications

Specifications

Electrical
- 50A to 600A primary nominal RMS current range
- ±150A to ±1100A primary current measuring range
- Reference voltage
  - 2.5V ±0.025V output voltage
  - 200Ω typical output impedance
  - ≥200Ω load impedance
- ≥2kΩ load resistance
- <5Ω output internal resistance
- 4.7nF load capacitance (±20%)
- 5V Supply voltage (±5%)
- 25mA maximum current consumption, 19mA typical
Accuracy - dynamic performance data
- ≤±1% total error
- ≤±1% maximum linearity error
- ≤±0.1mV/K temperature coefficient of U_OE
- ≤±190ppm/K temperature coefficient of U_REF
- ≤±250ppm/K temperature coefficient of S
- <±0.4% magnetic offset voltage
- <40mVpp RMS noise voltage referred to primary (DC to 20MHz)
- DC to 240kHz frequency bandwidth (-3dB)

Insulation coordination
- 3.3kV RMS voltage for AC insulation test, 50Hz, 1 minute
- >1kV partial discharge RMS test voltage
- 6kV impulse withstand voltage, 1.2/50µs
- 6.9mm minimum creepage distance
- 4.4mm minimum clearance distance
- >600 Comparative Tracking Index (group I)
Mechanical
- ±0.5mm general tolerance
- 20.4mm x 10.4mm x 0.5mm aperture for primary conductor
- M4 transducer fastening
- <1.5Nm recommended fastening torque
- Molex 2501P04V00A connection of secondary
-40°C to +105°C ambient operating temperature range
EN 50178: 1997 standard