Power Clamp-ons

Power clamp-on probes are flexible current sensing accessories designed for use with power quality analyzers and energy loggers. Using Rogowski coil or split-core transformer technology, they enable non-invasive measurement of AC current on live conductors without interrupting service. Flexible jaw designs allow engineers to wrap the probe around large, irregularly shaped, or tightly spaced conductors that rigid clamps cannot accommodate, making them particularly valuable in switchgear, distribution panels, and industrial motor control centers.

These probes are essential in any power quality investigation, delivering accurate current waveform data that instruments use to calculate power factor, harmonics, flicker, voltage unbalance, and energy consumption. Available in various opening diameters and current ranges, power clamp-on probes support measurements from a few amperes to several thousand amperes.

Typical Applications

Three-phase power quality monitoring on main service feeders and distribution panels
Energy auditing and load profiling in commercial and industrial facilities
Harmonic analysis on variable frequency drives (VFDs) and motor loads
Substation and utility metering verification
Commissioning and troubleshooting of electrical power installations

Popular Brands

Dranetz is a leading manufacturer of flexible power clamp-on probes, with their DRANFLEX XL series supporting current ranges up to 6000A. These probes are compatible with Dranetz power quality analyzers and other instruments with compatible current input connectors, providing reliable performance in demanding industrial environments.