TRV04

TRV04 Three-phase 0-5V rms Rogowski coil current sensor

The combination of Rogowski coil and integrator can achieve 90° phase shift compensation and frequency balance, making the output of Rogowski coil in phase with the primary current and independent of frequency, which is suitable for more application scenarios. TRV04 series three-phase integrator sampling aluminum alloy housing has strong anti-interference ability and outputs instantaneous voltage proportional to the primary current (0-333mV, 0-1V, 0-5V, 0-10V), usually used with power analyzers, oscilloscopes, ammeters, data recorders, data acquisition cards and other equipment.

Features include:

Fully isolated measurement
Aluminum alloy housing, UL94-V0
Certified CE and RoHSIII compliant
Plate installation
Small size

Applications:

Power analyzers
Oscilloscopes
Data loggers
Aata acquisition cards
Ammeters

What is the Rogowski coil?

Rogowski coil is also called differential current sensor. It is an “air core” toroidal coil arranged around a conductor, so the alternating magnetic field generated by the current induces a voltage in the coil. The coil is actually a mutual inductor coupled to the conductor being measured, and the voltage directly output from the coil is proportional to the rate of change of the current, such as: @50Hz/1kA Vout=85mV, @60Hz/1kA Vout=85*60/50=102mV. If you want to obtain a current waveform or a current value that is independent of frequency, you need to add an integral circuit to achieve 90° phase shift compensation and frequency balance.