Extech PQ34-2 200A Current Clamp Probes

The PQ34-2 probe set offers a compact yet precise solution for current measurement in single-phase or three-phase systems when used with compatible power-analysing instruments. Each of the three probes features a jaw opening of approximately 19 mm, allowing clamping around small to moderate conductors with ease. The probes support two selectable current ranges—20 A and 200 A AC—with output sensitivities of 10 mV per amp in the 20 A range and 1 mV per amp in the 200 A range. Designed for high accuracy, the probes maintain ±1% full-scale accuracy at 50/60 Hz, and phase error is kept under ±1° in that band, supporting credible power-quality and energy-measurement work. They operate over a frequency bandwidth from 45 to 400 Hz, and they have minimum load requirements and safety ratings suitable for professional use. The probes connect via standard signal-output plugs to the host analyser and draw their power from it, meaning no separate battery pack is required. With their modest size and professional build, the PQ34-2 set is ideal for logging and diagnosing electrical loads in commercial panels, service equipment and light-industrial settings where currents remain within the two-hundred-amp scale.

Features

• Switch-selectable current ranges: 20 A and 200 A AC to cover low- to moderate-current applications.

• Output sensitivities of 10 mV/A (in 20 A range) and 1 mV/A (in 200 A range) for compatible voltage-output analyzers.

• True accuracy of ±1% of full scale at 50/60 Hz, with phase error less than ±1° at that frequency.

• Frequency bandwidth from 45 Hz up to 400 Hz to accommodate both standard power systems and some motor-drive or variable-frequency contexts.

• Compact jaw opening of ≈ 19 mm (0.75 in) diameter, suitable for clamping typical insulated single conductors or bus sections of that size.

• Cable length of approximately 4 m (13.1 ft) to allow comfortable placement around panels or connection to analysers without strain.

• AC-coupled output signal requiring a minimum load of 100 kΩ for specified accuracy, ensuring compatibility with host instrumentation.

Includes

• Three current clamp probes