PEM Rogowski coil LFR06/6 dual range AC current probe low-frequency 120 A/1200 A

PEM AC current probeUtilizesa Rogowski coil and matched analog integrator to provide accurate non-contact AC current measurement over a very wide frequency range.

Compared with current transformers (CTs) or Hall-effect current sensors, these flexible clip-on current probes have very low insertion impedance, are easy to insert into narrow spaces, and are not damaged by overcurrent surges.

They can be used to measure AC, pulsed, or transient current waveforms. Because PEM current probes have no magnetic core, they can be used to measure AC current on conductors carrying high DC current or in high DC magnetic fields.

LFR dual-range AC current probe

Dual-range, clip-on, battery-powered Rogowski probe for general-purpose AC power measurement. The LFR has a 10:1 switch-selectable current ratio, providing a wide dynamic range in a single probe.

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Features

• Peak current rating from 60A to 60kA

• Rugged, flexible, clip-on coil

• The Rogowski coil includes an integrator to provide an analog signal precisely proportional in amplitude and phase to the primary current.

• High-voltage isolation and common-mode rejection

• Measures AC current even in the presence of high DC current

• Unaffected by high DC magnetic fields

• Bandwidth from 0.1Hz to 1MHz

• No I*t limitation, as with CTs

• Battery (4xAA) and external DC power supply

• CE mark

• Special low-temperature version

• Special long-coil version

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Applications

• Current waveform monitoring in semiconductor switches

• Development, testing, and servicing of power-electronics equipment.

• Pulsed-power capacitor discharge and magnetic accelerator current measurement

• Welding, motor drives, generators, current

• Ground currents in rotating machine shafts

• Induction heating and plasma current measurement

• AC current measurement in the presence of large DC currents

• Fault monitoring, circuit-breaker interruption, and lightning-strike currents

• Ripple current monitoring in batteries and capacitors