Why Choose the Lovato DMK71R1 Three-Phase Digital Ammeter?
The Lovato DMK71R1 is a compact three-phase digital ammeter designed for continuous AC current monitoring, control and protection in industrial switchboards, motor control centres and electrical distribution systems. It displays the current measured on each phase, enabling operators and maintenance engineers to compare loading across a three-phase installation from one DIN rail-mounted instrument.
The meter uses True RMS measurement to provide dependable current readings, including in systems affected by harmonics or waveform distortion from variable speed drives, electronic power supplies and other non-linear loads. It is designed for indirect measurement through external current transformers with a 5 A secondary output and can display primary currents up to 10,000 A when the appropriate CT ratio is programmed.
The DMK71R1 stores the minimum and maximum current measured on each phase and incorporates a programmable changeover relay output for alarm, control and protection functions. Its compact three-module DIN rail format makes it suitable for panel installations where space is limited while still providing detailed three-phase current supervision.
Key Advantages
- Accurate three-phase AC current monitoring.
- Displays individual current values for all three phases.
- True RMS measurement for reliable readings on distorted waveforms.
- Stores minimum and maximum current values for each phase.
- Includes a programmable relay output for alarm, control and protection.
- Supports indirect primary current measurement up to 10,000 A.
- Compact three-module DIN rail-mounted design.
Key Features
- Lovato DMK digital metering instrument series.
- Three-phase digital AC ammeter.
- Three individual phase-current readings.
- Three stored maximum phase-current values.
- Three stored minimum phase-current values.
- 5 A current transformer input.
- 0.05 to 5.75 A direct input measurement range.
- Programmable CT ratio for readings up to 10,000 A.
- One programmable changeover relay output.
- 220 to 240 V AC auxiliary supply.
- LED display with DIN rail installation.
Reliable Three-Phase Current Monitoring and Protection
Monitoring the current on each phase helps engineers identify overloads, underloading, phase imbalance and abnormal equipment operation. By presenting the three phase-current values individually, the Lovato DMK71R1 makes it easier to compare loading and detect conditions that could reduce efficiency or damage connected electrical equipment.
The programmable relay output allows the meter to activate an external alarm, switch a contactor or interface with a control system when a configured current condition occurs. This makes the DMK71R1 suitable for automated overload supervision, undercurrent detection and preventative maintenance applications.
Typical Applications
- Industrial switchboards and electrical distribution panels.
- Motor control centres and machinery cabinets.
- Three-phase motor load monitoring.
- Pump, fan and compressor systems.
- Generator and power supply supervision.
- Overcurrent and undercurrent alarm circuits.
- Manufacturing and process equipment.
- Current monitoring through external 5 A current transformers.
