The HTRS series will be available in three current ranges (10 A / 30 A / 50 A) and can measure peak currents up to twice the nominal value. Despite its very high insulation test voltage of 6.0 kV, the HTRS series transducers are compact, measuring only 72 mm x 29 mm x 26 mm. The HTRS series also offers excellent temperature stability, and mounting adapters allow the unit to be installed in existing applications.
This transducer complies with IRIS (International Railway Industry Standards). Thanks to the HTRS series, railway technology users have access to a versatile set of sensors, regardless of whether they work in railway or signaling technology. The HTRS series is ideal for measuring currents in switches, level crossings, and signaling systems. It can also be used in industrial applications such as process automation or DC power harvesting in solar farms.
Its split-core design provides very high accuracy of 2% at +25°C and high-temperature stability within an operating temperature range of -40 to +85°C. The HTRS series has a measurement frequency bandwidth of 1 kHz at -3 dB and offers a fast response time of 10 µs at 90% of the rated current. Current consumption at maximum primary current is less than 50 mA for a supply voltage of +12 VDC or +24 VDC.
Thanks to the primary circuit, the maximum deviation caused by nearby conductors carrying the same current is only about 0.3% (typical). The positioning error of the primary conductor is negligible compared to previous solutions.
Weighing only 35 g, the transducer is over 70% lighter than previous split-core current transducers for these applications. It also stands out for its compliance with several international railway standards, as well as IRIS specifications.
The current sensor has been designed according to the latest standards for railway technology and industry, including UL and UKCE, and is based on materials that meet all relevant fire protection requirements for railway applications. It is CE certified and, like all LEM transducers for railway applications, the HTRS series comes with LEM's five-year warranty.
