General
Enclosure diameter	70 mm

The MiniFlex MA194-250 from Chauvin Arnoux is a flexible AC current transformer designed for non-invasive measurement of alternating currents in electrical conductors. It enables current measurement without interrupting the circuit and protects the user from hazardous voltages in the wiring system. The current transformer is specifically designed for use with Qualistar and PEL power loggers, which are used for energy consumption analysis and monitoring in industrial and commercial facilities. With an encircling diameter of 70 mm, it fits cables up to this size and is therefore suitable for many standard applications in electrical engineering.

Applications

The MiniFlex MA194-250 is used in energy efficiency analysis, for monitoring current consumption in production facilities, buildings, or machines. It is ideal for technical inspections, maintenance work, and diagnosing current consumption anomalies. It is used in environments where quick and safe current measurement without physical modification of the wiring is required, for example, during installation of energy monitoring systems or testing of electrical installations.

Features and Equipment in Detail

The current transformer measures alternating currents in the range of 100 mA to 10,000 A. This measurement range covers a wide variety of applications, from small consumers to large industrial loads. The flexible design allows for easy clamping around the cable to be measured, with the jaw having a diameter of 70 mm. The device dimensions are approximately 130 mm (length) × 80 mm (width) × 18 mm (height), ensuring compact handling. The connection cable is 3 m long and allows flexible positioning of the current transformer relative to the connected measuring device. The weight is approximately 110 g, supporting lightweight and mobile use.

Technology Explained Simply

The MiniFlex MA194-250 operates on the principle of a clamp current transformer. It uses magnetic induction generated by the current flowing in the cable to induce a proportional current in a secondary winding. This induced current is transmitted via the connection cable to the measuring device (e.g., a power logger), where it is converted into current values. The flexible construction of the transformer allows for easy and safe installation around the cable without interrupting the circuit. Measurement is thus contactless and without direct electrical connection to the wiring system.

Compatibility and Accessories

The current transformer is specifically developed for use with Qualistar and PEL power loggers. These devices are used for continuous recording and analysis of energy consumption. As accessories, a set of colored identification parts is offered, which can help with better identification and assignment of individual current transformers to different conductors.

Installation and Mounting

Installation is performed by simply clamping the cable to be measured with the flexible jaw. It is important to ensure that the cable is fully and centrally positioned inside the jaw to ensure accurate measurement. The connection cable is connected to the corresponding measuring device. The connection is made via the designated terminals or sockets on the logger. Installation requires no special tools and can be carried out by qualified personnel.

Operational Advantages

The MiniFlex MA194-250 offers a safe and efficient method for current measurement, as no direct electrical connection to the wiring system is required. The flexible jaw enables quick and easy installation, even in confined spaces. The high measurement accuracy in the range of 100 mA to 10,000 A makes it suitable for a wide range of applications. Combined with Qualistar and PEL power loggers, it enables detailed analysis of energy consumption, which is important for optimizing energy efficiency and identifying sources of loss.