The laboratory shunt from Chauvin Arnoux is a measuring accessory specifically developed for precise measurement of high direct currents (DC), used in conjunction with a voltmeter. The device functions as a measurement shunt and enables current measurement by converting the current flow into a measurable voltage, which is read on the voltmeter. It is designed for use in laboratory and industrial applications where high safety and accuracy requirements apply. The construction complies with IEC 61010, with safety category CAT III 600 V ensuring safe operation at high voltages.

Applications
This shunt is particularly suitable for applications requiring precise and safe measurement of high direct currents. These include laboratory environments, electrical engineering training, and industrial testing and maintenance work. The double insulation and safety sockets ensure safe operation, even with inexperienced users. Its use in educational series demonstrates that the device is also suitable for pedagogical purposes, where clear and safe handling is required.

Functions and Features in Detail
The device features an accuracy class 0.5, meaning the measured values lie within a tolerance range of ±0.5 % of the nominal value. This ensures reliable and reproducible results. The temperature coefficient is very low, ensuring measurement accuracy remains stable even with varying ambient temperatures. Connections are made via safety sockets with a diameter of 4 mm, enabling secure and easy connection with test leads. The sockets are designed to ensure a secure contact and minimize the risk of short circuits.

Technology Explained Simply
A shunt, also known as a shunt, operates according to Ohm’s Law: the current flowing through the resistor generates a voltage proportional to the current. This voltage is measured with a voltmeter, and the current can be calculated from the value. The accuracy of the shunt depends on resistance constancy and temperature stability. The low temperature coefficient ensures that the resistance value changes only minimally even with temperature fluctuations, which is crucial for precise measurements.

Compatibility and Accessories
The shunt is designed for use with a voltmeter capable of accurately reading the generated voltage (e.g. 100 mV at 30 A). The safety sockets with 4 mm diameter are universally applicable and compatible with standard test leads. The double insulation and safety category CAT III 600 V make the device suitable for use in electrically demanding environments. It is part of a series that also includes other nominal currents such as 1 A, 5 A, 10 A, 20 A, and 30 A, allowing the appropriate model to be selected according to requirements.

Mounting and Installation
Installation is carried out by direct connection into the current circuit, with the shunt installed in series with the current path to be measured. The safety sockets facilitate installation and ensure a secure connection. It is important that the shunt is fully integrated into the current circuit to ensure accurate measurement. The robust, shock-resistant, and self-extinguishing housing construction protects the device from mechanical impacts and increases its service life.

Operational Advantages
The laboratory shunt offers high safety due to double insulation and safety sockets. The accuracy class 0.5 and low temperature coefficient ensure reliable measurement results. The robust housing makes the device suitable for demanding operating conditions. The simple handling and universal compatibility with standard test leads facilitate daily use in laboratories and industry. The device is delivered with an operating manual explaining correct usage.