Digital current value indicator DMA-3, three-phase, Imax= 20A, 3 modules

Digital Current Meter – Precise Measurement in a Three-Phase Network

This three-phase digital current meter DMA-3 is a reliable tool for monitoring loads in electrical installations. The device is designed for both professional and demanding home users where energy consumption control and safety are key. The meter offers an accurate measurement of the effective current value (True RMS) and is designed for DIN rail mounting, making it easy to integrate with existing systems.

Functionality and application

The DMA-3 meter is used to continuously read the current intensity in the electrical circuits of a three-phase network. It can operate in two modes: direct measurement (up to 20A) and indirect measurement using current transformers (up to 1000A/5A). The LED display provides a clear reading of the value for each phase, and the ability to program the transformers allows the device to be adapted to specific measurement needs. This allows for precise load monitoring and energy consumption optimization.

Construction features and parameters

The meter is characterized by a compact design, occupying 3 modules on the DIN rail (52.5 mm wide). The power supply is from AC voltage (100-265V), which ensures a wide range of compatibility. The measurement circuit is galvanically isolated from the power circuit, which increases safety. The device has a protection class of IP20, which means protection against touching with a finger and solid bodies larger than 12.5 mm. The accuracy class is 1%, guaranteeing precise measurement results. The meter's power consumption is 4W.

Key features:

• True RMS Measurement: Ensures accurate readings even with non-linear waveforms.
• Two measurement modes: Direct (up to 20A) and indirect with transformers (up to 1000A/5A).
• Clear LED display: Allows easy reading of values for each phase.
• DIN rail mounting: Quick and easy installation in the switchgear cabinet.
• Galvanic isolation of circuits: Increased safety.
• Transformer programming: Adaptation to different measurement configurations.
• Compact dimensions: Occupies only 3 modules on the DIN rail.