General
Number of measurement loops	3
Enclosure diameter	7 cm

The Chauvin Arnoux MiniFlex MA130 is a flexible current sensor for three-phase current measurements. It is suitable for direct connection to power analysers, recorders or other AC measuring instruments to measure currents in three-phase networks or up to three independent current measurements. The sensor is based on the Rogowski coil principle, making it flexible, lightweight and without a magnetic circuit. This prevents saturation effects and overheating, enabling constant linearity and low phase shift – essential for precise power measurements.

Applications
The MiniFlex MA130 is used in various industries, including industrial maintenance and repair services, energy generation and distribution, transport sectors such as rail, and in research and testing laboratories. The flexible measuring loop allows measurement at hard-to-reach locations, for example in switchgear cabinets or distribution enclosures, and is suitable for single-phase and three-phase networks. Applications range from residential buildings and service companies to industrial facilities.

Functions and equipment in detail
The sensor features three measuring loops with a length of 25 cm and an encirclement diameter of 7 cm. The outputs consist of three coaxial cables, each terminated with an insulated BNC safety connector. Power supply is either via two 1.5 V AA batteries or via an external power supply with a µUSB Type-B connector. The operating time is 500 hours when powered by batteries. The devices feature three LED indicators on the housing: a green LED for power supply, a yellow LED for the auto-shutdown function (on/off), and a red LED for exceeding the measurement range. The auto-shutdown function can be disabled to enable longer measurement campaigns.

Technology explained simply
The Rogowski coil operates without a magnetic circuit, making the sensor flexible and lightweight. The measurement principle is based on inductive voltage generation through changes in magnetic flux, with the output signal being an alternating voltage. The low phase shift and high linearity ensure reliable measurement results, especially for power measurements. The bandwidth is suitable for industrial frequencies and harmonic analysis. The IP67 protection rating for the sensors and IP54 for the housing ensures suitability for outdoor use and protection against dust and water.

Compatibility and accessories
The MiniFlex MA130 is designed for connection to AC voltage inputs (mV AC / V AC) of power analysers, recorders or other AC measuring instruments. Suitable accessories include a set of coloured identification parts, a set of two adapters BNC socket/4mm plug, Velcro straps (5 pieces), and a USB power adapter. These components support installation and identification of the sensors in use.

Mounting and installation
The flexible measuring loop can be easily wrapped around conductors, cable bundles or busbars. The new plug system allows opening and closing the loop even with safety gloves. Installation is direct to the measuring device via the BNC connectors. The sensors are designed for use in switchgear cabinets and distribution enclosures, with the flexible shape enabling access to tight spaces.

Advantages in operation
The MiniFlex MA130 offers a wide measurement range from 0.5 A to 3 kA, covering a wide range of applications. The absence of saturation and low phase shift ensure stable and precise measurement results. The long operating time of 500 hours on battery power reduces maintenance effort. The IP67 protection rating for the sensors and IP54 for the housing enables use in harsh environments. The flexible construction and compact design facilitate handling and installation in confined spaces.

Note: Batteries are not included in the delivery scope.