Eigenschaften
Terminals	Ø 48 mm
Aac	1000 A
Vac	1 200 V
Vdc	1 700 V
Frequency in V / in I	Ja / Ja
Resistance	100 kΩ
Dimensions / weight	92 x 272 x 41 mm 600 g
Automatic ranges (Autorange)
Automatic AC/DC detection
Charge development (TrueInrush)

The Chauvin Arnoux F402 is a multi-function clamp meter for professional use in electrical engineering, particularly for maintenance, control, monitoring, and diagnosis of medium-current installations. The device combines the functions of a digital multimeter with a current clamp and enables precise measurements of alternating and direct current, voltage, resistance, continuity, diodes, and temperature via Type-K thermocouples. The clamp meter is designed for use in low-voltage installations and meets the highest safety requirements with a protection rating of IP54 and electrical safety according to IEC 61010-1 and IEC 61010-2-032, classified as 1000 V CAT IV / 1500 V CAT III.

Applications

The F402 is particularly suitable for applications involving medium current levels, as found in industrial and commercial electrical installations. It is suitable for testing circuits, motor starting processes (Inrush), and charging developments (TrueInrush). The clamp meter is frequently used in the maintenance and servicing of electrical systems, where high safety and reliability are required. The IP54 protection rating safeguards the device against dust and splashing water, making it suitable for use in outdoor environments or humid conditions.

Functions and Equipment in Detail

The device features a backlit LCD display with a resolution of 10,000 points, enabling clear and precise display of measurement values. Measurements are taken using the TRMS method (True Root Mean Square), ensuring accurate capture of alternating quantities regardless of signal shape. Automatic range selection (Autorange) and automatic detection of AC/DC quantities reduce operational complexity and increase safety. The clamp meter can measure currents up to 1000 A AC, voltages up to 1200 V AC and 1700 V DC, and resistances up to 100 kΩ. Additional functions include Min/Max display, Hold function, audible continuity test (adjustable between 1 Ω and 999 Ω), and diode test.

Technology Explained Simply

TRMS measurement ensures that even distorted or non-sinusoidal signals, such as those occurring with electronic loads or frequency converters, are accurately captured in terms of actual RMS voltage or current. The 12-bit digital measurement acquisition ensures high resolution and accuracy. The best accuracy is 1 % of the measured value plus 3 digits, which is sufficient for professional applications. Frequency measurement is available for both voltage and current. Automatic power-off protects the battery and extends the device's lifespan.

Compatibility and Accessories

The F402 is equipped with a jaw opening of 48 mm, allowing easy encircling of conductors. As accessories, various test leads, probe tips, crocodile clips, and thermocouples (e.g. SK11, SK13, SK14, SK15, SK17, SK19, SK6) are available, suitable for different applications. The test leads are rated for CAT IV 1000 V and offer high safety. Additionally, a carrying case is available to safely store and transport the device.

Mounting and Installation

The clamp meter is simply closed around the conductor to be measured, with the jaw having a diameter of 48 mm. Operation is performed via an ergonomic rotary switch that can also be operated with protective gloves. Functions are accessed via buttons, with each button performing exactly one function in every operating mode. The device is powered by four 1.5 V LR06 batteries, which are inserted into the device.

Advantages in Operation

The F402 offers high safety due to its CAT IV 1000 V / CAT III 1500 V classification and IP54 protection rating. Automatic functions such as Autorange and AC/DC detection reduce error sources and speed up measurements. Integrated functions such as Inrush measurement, TrueInrush, Min/Max, and Hold function expand the range of applications. The robust construction and shock-protective casing ensure a long service life, even with frequent use in demanding environments. The large, illuminated display allows easy and quick reading of values, even in poor lighting conditions.

Batteries are not included in the delivery scope.