General
Rated current	2400 A AC
Measurement range	1…3600 A AC
Enclosure dimensions	64 x 150 mm

The D30N current transformer from Chauvin Arnoux is a measuring instrument for the accurate detection of alternating currents in industrial and technical installations. It is specifically designed for measuring medium and high currents on thick cables and busbars. The rectangular shape of the jaw allows for secure encirclement of conductors with cross-sections that would not fit into a round jaw. The device is designed for use in electrical installations with a voltage category of CAT III 600 V, enabling applications in industrial electrical engineering and maintenance of distribution networks.

Applications

The D30N current transformer is used in electrical engineering where non-invasive current measurement on existing conductors is required. Typical applications include monitoring power consumption in production facilities, diagnosing load distribution in distribution enclosures, or testing switchgear. The rectangular shape of the jaw enables measurement on busbars and cable bundles, which are common in industrial environments. Measurement is performed without interrupting the power supply, increasing the safety and efficiency of inspections.

Functions and Equipment in Detail

The current transformer has a measurement range of 1 A to 3600 A alternating current. The turns ratio is 3000/1, meaning that a current of 3000 A at the input produces an output signal of 1 A. Typical accuracy is ≤ 0.5 %, ensuring high measurement accuracy for industrial applications. The output signal is an alternating current delivered via insulated sockets with a diameter of 4 mm. These sockets are equipped with overvoltage protection to safeguard connected measuring instruments from transient voltage spikes.

Technology Explained Simply

The current transformer operates on the principle of a current transformer. When a conductor carrying current is passed through the jaw, the flowing current generates a magnetic field that is induced in the magnetic circuit of the jaw. This field is converted into a proportional output signal via windings inside the jaw. The distributed windings and the quality of the magnetic circuits ensure low phase shift, making the jaw suitable for power measurements as well. The encirclement dimensions of 64 mm x 150 mm allow measurement on conductors with corresponding cross-sections.

Compatibility and Accessories

The D30N current transformer is designed for use with measuring instruments that have an alternating current input with 4 mm socket connectors. Compatible accessories available in the range include a set of two adapters: BNC socket / 4 mm plug. These adapters enable connection to measuring instruments equipped with BNC connectors. Using adapters extends the compatibility of the current transformer with various measuring systems.

Mounting and Installation

Installation is performed by simply opening the jaw, encircling the conductor to be measured, and closing the jaw. No additional mounting or fastening is required. The jaw is placed directly on the conductor, with the rectangular shape ensuring secure encirclement of busbars and thick cables. Measurement is carried out without interrupting the current flow, making installation quick and safe.

Advantages in Operation

The D30N current transformer offers high measurement accuracy and reliability for capturing alternating currents. The low phase shift makes it suitable for power measurements as well. The integrated overvoltage protection at the output safeguards connected measuring instruments. The rectangular shape of the jaw enables measurement on non-circular conductors, expanding the range of applications. The CAT III 600 V classification ensures safe use in electrical installations with the corresponding voltage category.

Protection Rating and Environmental Conditions

The device is designed for use in industrial environments. The CAT III 600 V rating refers to the voltage category, indicating the maximum permissible voltage for operation.