Power

Transducers enable RMS value measurement for AC currents

20th March 2018
Lanna Deamer
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Manufacturer of high quality signal, sensor, current and voltage measurement devices for utility, rail, ship, and other rugged environments, Knick Elektronische Messgeräte has announced its P 43000 TRMS AC/DC high voltage transducers.

Input values range from 100mA up to 5A AC. They are output as standardised analogue DC signals (0…20mA, 4…20mA, 0…10V).

A rotary switch on the front facilitates comfortable, calibrated switching between up to 16 customised ranges. Traditional AC/DC transducers are very susceptible to errors due to their poor insulation and are only designed for pure sinewave measurement.

The Knick P 43000 TRMS, however, has been developed to also accurately process distorted input signals. The highly accurate true RMS circuit converts signals with a crest factor of up to five in the frequency range of 40-1,000Hz or 8-400Hz. The VariTrans P 43000 TRMS withstands working voltages up to 3,600VAC/DC and test voltages up to 15kV.

Protective separation of the input, output and power supply provide protection from electric shock up to 1,800VAC/DC according to EN 61140.

Knick's own TransShield technology facilitates an extremely compact, shielded design of the high voltage transformers, allowing the VariTrans P 43000 TRMS to fit into a very compact, only 45mm wide housing. Vacuum encapsulation provides maximum long term protection against aggressive environmental influences, shock and vibration.

In addition, VariTrans P 43000 TRMS transducers come with an integrated VariPower broad range power supply for supply voltages from 20...253VAC/DC, which ensures maximum safety even in regions where auxiliary power is shaky. Knick VariTrans P 43000 TRMS transducers come with a five year warranty.

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