Products

High DC current Resistance Meters

The light-weight, micro-ohmmeter RMO series instruments are designed for contact resistance measurement of non inductive test objects. RMO instruments are based on state of the art technology, using the most advanced switch mode technique available today. RMO generates true DC current with automatically regulated test ramps. During the test RMO ramps with increasing current before measuring and decreasing current after the measurement. This eliminates magnetic transients. Models range from 100A to 800A (IEC recommends 50A for breaker contacts, ANSI recommends 100A). The RMO series is available in a plastic case or in a metal case.

High DC current Winding Resistance meter for transformers/motors

The winding ohmmeter series RMO-T instruments are designed for winding resistance measurement of inductive test objects. RMO-T instruments are based on state of the art technology, using the most advanced switch mode technique available today. RMO-T generates true DC current (up to 60A @ up to 60V of drive for portable units and up to 100A for rack-mounted units) with automatically regulated measurement and discharge circuit. RMO-T instruments can perform a simple and quick, but reliable transformer OLTC condition assessment. Measuring ripple of the current, and value of the winding resistance during the tap change, you can detect problems with contacts, and selector/diverter switch operation (tap change with interruption).

Typical applications:

• minimal-trip voltage-test of the circuit breaker's coils
• supplying spring-charging motors
• power supply at test with breaker analysers

TRT30 is a true three-phase, fully automatic, test set specially designed for turns ratio, phase shift and excitation current measurement of power, distribution and instrument transformers. Test single phase or 3 phase transformers with most advanced technique available today. PC software included to automatically test turns ratio, phase shift, excitation current and vector group.

Nine different models available for 1 phase or 3 phase and different voltage ranges.

Portable and low cost analyzers as CAT03 models for 3 timing channels and CAT60 models for 6 timing channels. Simple operation to measure timing (main and aux.) and record graphs of coil currents and displacements of moving parts of a circuit breaker. CATWin software provides full control of all CAT functions over PC and monitoring of test results. CAT series has 7 models to choose from.