Eigenschaften
Resistance	100 kΩ
Continuity/buzzer	Ja (< 40 Ω)
Ø terminals	48 mm
Crest factor (CF)
Min Max button
True-Inrush function

The Chauvin Arnoux F407 is a TRMS AC+DC multimeter clamp, designed for use in low-voltage installations of medium power. It is particularly suitable for applications in low-voltage distribution networks, industry, the railway sector, as well as lift and hoisting technology. The clamp serves as a reliable measuring instrument for diagnostics and evaluation of electrical parameters during maintenance, testing, monitoring, analysis, and installation work.

Applications

The F407 is designed for use in industrial and technical installations where precise measurement of current, voltage, power, and harmonics is required. Typical application scenarios include monitoring drive systems, analysing power quality in distribution networks, and diagnosing faults in electrical installations. The clamp is particularly suitable for installations operating with mixed AC+DC signals, such as in electromobility or hybrid drives.

Functions and Equipment in Detail

The clamp features a digital 12-bit TRMS acquisition system, ensuring high measurement accuracy regardless of signal shape. Measurement ranges include 250 mA to 1000 A for alternating current (AC) and 250 mA to 1500 A for direct current (DC), as well as mixed AC+DC signals. The best accuracy is 1 % of the measured value plus 3 digits. Voltage measurement covers a range from 150 mV to 1000 V for AC, DC, and AC+DC, also with an accuracy of 1 % L + 3 digits. The clamp automatically detects between AC and DC for voltage and current, simplifying operation.

Technology Explained Simply

The F407 measures True RMS values, meaning it delivers precise readings even with distorted or non-sinusoidal signals. This is particularly important for modern electronic loads, which often generate non-sinusoidal current waveforms. The bandwidth ranges from 5 Hz to 20 kHz, enabling accurate capture of even high-frequency signals. The crest factor (CF) is also measurable, which is relevant for analysing loads with high current peaks. The clamp measures active power (W), reactive power (var), apparent power (VA), as well as power factor (PF) and displacement factor (DPF), with power measurement possible both single-phase and total three-phase.

Compatibility and Accessories

The clamp is equipped with a Bluetooth communication function, enabling wireless transmission of measurement data to a PC system. The integrated DataView software allows analysis of recorded data and report generation. Additionally, data storage for up to 3000 measurements is possible, including minimum and maximum values. Available accessories include test leads with 4 mm connectors, test probes, alligator clips, and a multi-purpose magnetic holder Multifix, supporting use in various environments. A transport case is also included in the delivery scope.

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Mounting and Installation

The clamp is placed directly around the conductor, with an enclosure diameter of 48 mm. Measurement is contactless, enabling quick and safe application. Operation is via a rotary switch, assigning each function its own position. The large, backlit display with 10,000 points ensures good readability even in poor lighting conditions. The clamp features automatic power-off to conserve battery life and a hold function to store the current measurement value.

Operational Advantages

The F407 offers comprehensive functionality with an integrated data logger, True InRush function for measuring inrush currents, harmonic analysis up to the 25th order (THD-f and THD-r), and peak functions for positive and negative peak values. The protection rating IP54 protects against dust and splashing water, increasing usability in outdoor and industrial environments. Electrical safety complies with IEC 61010, Category CAT IV 1000 V, ensuring high safety during measurements in low-voltage installations. The clamp comes with a 3-year warranty.

Delivery Scope

The delivery scope includes the F407 multimeter clamp, test leads, a transport case, PC software with Bluetooth interface, the operating manual, and batteries. The clamp is therefore immediately ready for use.

Functions at a Glance

The clamp measures current (AC/DC), voltage (AC/DC), resistance (up to 100 kΩ), continuity (below 40 Ω), frequency (5 Hz to 20 kHz), power (W, var, VA), power factor (PF), displacement factor (DPF), crest factor (CF), harmonics (THD-f/THD-r up to 25th order), True InRush, peak values (±100 ms), min/max values, and enables data storage (up to 3000 measurements) as well as Bluetooth transmission. The display is backlit and features automatic power-off and a hold function.

Accessories

Additional accessories are available, including test leads with 4 mm connectors (straight/angled), test probes, alligator clips, multi-purpose magnetic holder Multifix, and a transport case. These extend the application possibilities of the clamp in various scenarios.