Single phase clip around / Clip on flexible AC current sensing probes Converting ac current to an isolated voltage (Instantaneous) For fast & easy installation in confined spaces
The LFR ac current probe has been designed to offer market leading low frequency performance, meaning high accuracy, low phase shift and low noise. This compact, low cost, clip-around probe is both flexible and dual-range, and is optimized to give minimal phase measurement error at frequencies from 45Hz to 20kHz and have a very low noise floor.
The LFR current sensors convert ac current to an isolated 0-6V voltage signal. The available LFR ranges are 0-60A to 0-60,000Apk. The LFR offers accurate measurement over a wide bandwidth ensuring precise measurement even with harmonically distorted waveshapes - using a flexible clip-on sensing coil.
Typical applications: Extending current ranges of power analyzers, wattmeters, oscilloscopes, data loggers, where energy and current monitoring is required. Typical loading situations are ac/dc Wind turbines, VFD motor drives, arc welding, power conversion and power distribution. For all LFR models, a NIST/NPL (UKAS) traceable calibration certificate and certificate of conformance is supplied. All LFR current sensors use UL or CSA approved materials.
|Phase error at 50Hz
bandwidth typ. (Hz) FL
|Phase error in
degrees at 20kHz
|x10||x1||x10||x1||x10||x1||Coil 300mm||Coil 700mm||x10||x1|
Safe peak working voltage to earth. The coils are flash tested at 4kVrms for 60 seconds. The coil is supplied with a removable silicone sleeve for additional mechanical protection. Information about continuous use of the coils at high voltage can be obtained from Powertek.
For de-rating due to temperature cycling please consult Powertek
Type & model / Coil circumference
LFR 06/6 / 700 mm
In this example supplied as 120A & 1200Apk, 0-6V output with 12-24Vdc power and 700mm coil length
* to meet CE / UL safety requirements, an external power adapter is supplied for 125Vdc, 110Vac and 230Vac options