General
Enclosure diameter	45 mm

The flexible current transformer of the MA200 series by Chauvin Arnoux is an isolated measuring instrument for precise detection of alternating currents with high frequencies and dynamic waveforms. It is specifically designed for use with oscilloscopes and enables the visualization of complex current signals, such as those occurring in electronic power supplies, welding systems, or transient measurements. The device features high bandwidth and low self-inductance, making it particularly suitable for analyzing rapidly changing currents.

Applications

The MA200 current transformer is used in electrical and electronic engineering where accurate representation of dynamic alternating currents is required. It is especially useful for investigating current transients, developing and maintaining power supplies, in manufacturing technology, and for testing switching operations in electrical installations. The high bandwidth of 5 Hz to 1 MHz allows capture of signals with very rapid changes, which is a critical requirement for precise analysis in modern measurement technology.

Functions and Equipment in Detail

The transformer offers two selectable measurement ranges: 0.5 A to 45 A peak and 0.5 A to 450 A peak. The turns ratio is 100 mV/A or 10 mV/A, depending on the selected range, transmitting the output signal as alternating voltage. The typical accuracy is ≤ 1% + 0.3 A, ensuring high measurement reliability. The enclosure has a diameter of 45 mm, corresponding to a circumference of 17 cm. This allows measurement on conductors or cables with corresponding cross-sections without requiring mechanical damage or switching.

Technology Explained Simply

The current transformer operates on the principle of a transformer-type current transformer. It induces an electrical signal proportional to the flowing current and outputs it as alternating voltage via a BNC coaxial connector. The isolated design protects the user and the measuring device from dangerous voltages. The bandwidth of 1 MHz means that even very fast current changes, such as those occurring during switching operations or in high-frequency applications, can be captured. The safety categories 600 V CAT IV and 1000 V CAT III ensure safe use in electrical installations with corresponding voltage classes.

Compatibility and Accessories

The current transformer is specifically designed for use with oscilloscopes. Compatible accessories include the MiniFlex MA200 30-300A/3V 070 (1 MHz) BNC, a power adapter for MiniFLEX MA200, a set of 2 adapters BNC female/4mm male, and opening clamps for MiniFLEX (yellow) – 5 pieces. These components allow flexible adaptation to various measurement environments and instruments.

Mounting and Installation

Installation is performed by simply looping the conductor to be measured around the flexible sensor. The design allows for quick and secure installation without tools. The BNC connection enables direct connection to oscilloscopes or other measuring devices with corresponding inputs. The sensor’s insulation protects against electrical hazards and allows use in energized systems.

Operational Advantages

The flexible design of the current transformer allows easy and quick installation on cables and conductors of various cross-sections. High bandwidth and precise accuracy ensure reliable measurement results, even with complex and rapidly changing signals. The isolated construction and high safety categories make the device suitable for use in industrial and professional environments. The two selectable measurement ranges expand application versatility and allow optimal adaptation to specific measurement tasks.

Scope of Delivery

The scope of delivery includes the current transformer model MA200, the user manual, and accessories for connection to oscilloscopes. These components are intended for immediate commissioning and safe operation of the device.