Eigenschaften
Clamp diameter Ø / sensor length	MA400D-170 : Ø 45 mm / 170 mm MA400D-250 : Ø 70 mm / 250 mm MA400D-1000 : Ø 318 mm / 1000 mm
Dimensions of housing	100 x 60 x 20 mm
Length of connected link cable	0,8 m

The Chauvin Arnoux DigiFLEX MA400D is a digital TRMS ammeter with a flexible current transformer, specifically designed for measuring alternating current in enclosures and distribution cabinets. The device features a compact housing and a flexible sensor with a diameter of 70 mm and a length of 250 mm, which can be easily wrapped around conductors. Measurement is performed in the range of 0.020 A to 399.9 A AC, with display in three ranges: 0.020 A to 3.999 A, 4.00 A to 39.99 A, and 40.0 A to 399.9 A. Resolution is 1 mA, 10 mA, and 100 mA depending on the measurement range, enabling precise reading. Accuracy is ± (2% + 10 pts) in the lower range and ± (1.5% + 2 pts) in the higher ranges. The device's bandwidth ranges from 10 Hz to 3 kHz, sufficient for measuring alternating currents in modern electrical installations.

Applications

The device is designed for use in electrical installations with safety category CAT IV 600 V, making it suitable for measurements in distribution boards, enclosures, and other primary power supply systems. The battery-operated operation using two 1.5 V AAA batteries enables mobile and flexible use without external power supply. The operating temperature ranges from 0 °C to +50 °C, allowing use in various environments, including industrial or outdoor applications.

Functions and Equipment in Detail

Display is via a 4,000-point digital display, which clearly shows the measured current value. The device features a HOLD function to fix the current measurement value, as well as maximum value memory to store the highest measured value during measurement. These functions are useful for monitoring load peaks or documenting measurement results. The exclusive closing system of the flexible sensor facilitates handling and ensures secure positioning of the sensor around the conductor to be measured.

Technology Explained Simply

TRMS (True Root Mean Square) means the device measures the actual RMS value of alternating current, regardless of the waveform shape. This is particularly important for non-sinusoidal loads, such as those found in modern electronic devices or frequency converters. The flexible measuring loop allows measurement even in tight or hard-to-reach areas within the enclosure without interrupting the conductor. Power supply is via two AAA batteries inserted directly into the device. The connected cable length is 0.8 m, sufficient to position the device outside the enclosure.

Compatibility and Accessories

The DigiFLEX MA400D is compatible with the magnetic Multifix holder, enabling secure mounting in the enclosure. Additionally, a strap for storing the device is included. These accessories support handling and storage, especially for frequent use.

Installation and Mounting

Installation is performed by wrapping the flexible measuring loop around the conductor to be measured. The closing system ensures secure locking. The magnetic Multifix holder allows firm mounting in the enclosure, keeping the device securely positioned during measurement. Operation is via buttons on the housing, with HOLD and maximum value memory functions activated directly through the buttons.

Operational Advantages

The device is characterised by its compactness, mobility, and easy operation. Direct display of current value and integrated memory functions simplify daily work in electrical trades. The safety category CAT IV 600 V ensures safe use in primary power supply systems. The flexible measuring loop enables quick and precise measurement without interrupting the conductor, reducing working time and increasing safety.

Scope of Delivery

The device is delivered with the magnetic Multifix holder, a strap for storage, and the user manual.

Dimensions and Weight

The housing has dimensions of 100 x 60 x 20 mm and the device weighs approximately 130 g, enabling a compact and portable design.

Accessories

Compatible accessories include opening clamps for MiniFLEX, hook-and-loop straps, and a transport bag with dimensions 120 x 200 x 60 mm. These items support handling and storage of the device.

Accessories

Compatible accessories include opening clamps for MiniFLEX, hook-and-loop straps, and a transport bag with dimensions 120 x 200 x 60 mm. These items support handling and storage of the device.