General
Enclosure diameter	10 mm

The MINI 03 current transformer from Chauvin Arnoux is a compact measuring transformer for alternating current measurement in low-power applications in commercial and industrial environments. It enables precise detection of alternating currents in the range of 1 A to 100 A AC and is specifically designed for use with multimeters or AC voltmeters. The device features a small clamping diameter of 10 mm, making it suitable for measuring on thinner conductors or in tight installations. The output signal is an alternating voltage, which can be directly connected to a measuring instrument via an integrated cable with an insulated connector (Ø 4 mm).

Applications

The MINI 03 is used in service and industrial applications where small to medium alternating currents need to be measured. Typical use cases include maintenance of electrical systems, checking consumers, or diagnosing power consumption in small machines and devices. Its compact design makes it particularly suitable for mobile applications where space and handling are important.

Functions and Equipment in Detail

The transformer operates on the principle of a current transformer, in which the current to be measured passes through the clamp and generates a proportional alternating voltage signal. The turns ratio is 1 A / 1 mV, meaning that each ampere of current produces 1 millivolt of voltage at the output. The typical accuracy is ≤ 2 %, which is sufficient for reliable measurement in practice. The output connection is made via a cable with an insulated connector with a diameter of 4 mm, which can be directly connected to a suitable measuring instrument.

Technology Explained Simply

The MINI 03 clamp current transformer uses electromagnetic induction to convert the flowing current into a measurable voltage signal. The clamp encloses the conductor through which the current flows and induces a voltage in a secondary circuit that is proportional to the current. The output voltage is transmitted via the cable to a multimeter or voltmeter, where it is read and converted into current strength. The safety category CAT III 300 V ensures that the transformer is suitable for measurements in electrical systems up to 300 V in category III, which is sufficient for many industrial and commercial applications.

Compatibility and Accessories

The MINI 03 is primarily designed for use with multimeters or AC voltmeters capable of measuring alternating voltage signals in the millivolt range. It is part of the MINI series from Chauvin Arnoux, which includes other models such as the MINI 05, which offers two directly readable measurement ranges. Use with other measuring instruments is possible, provided they have the required input characteristics (voltage range, impedance).

Installation and Mounting

Installation is carried out by simply clamping the conductor to be measured with the clamp. No additional mounting or fastening is required. The clamp is placed around the conductor, taking into account the clamping diameter of 10 mm. The cable with the insulated connector is connected to the measuring instrument. The connection is mechanically stable and enables safe measurement without direct contact with the conductor.

Operational Advantages

The MINI 03 provides fast and uncomplicated current measurement without interrupting the circuit. Its compact design and small clamping diameter allow for flexible handling, especially in confined spaces. The high accuracy of ≤ 2 % and clear signal transmission via the cable ensure reliable measurement results. The safety category CAT III 300 V ensures safe use in typical commercial and industrial environments.

Scope of Delivery

The scope of delivery includes the MINI 03 clamp current transformer with integrated cable and insulated connector (Ø 4 mm).