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DMK71R1 – 3PH D/AMMETER 220-240VAC C/W P/R OUT
Lovato DMK71R1 three-phase True RMS digital ammeter with three phase-current readings, minimum and maximum value storage, 5 A current transformer inputs, DIN rail mounting and a programmable relay output.
£152.68
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.
Technical Specifications
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| MID Approval | No | |
|---|---|---|
| Current Input Rating (A) | 5.75 A | |
| Device Type | Energy meter | |
| Voltage | 240 V | |
| Manufacturer | Lovato Electric | |
| Series | DMK | |
| Model | DMK71R1 | |
| Product type | Three-phase digital ammeter | |
| Measurement | Three-phase AC current | |
| Displayed values | Three individual phase-current values | |
| Stored values | Minimum and maximum current for each phase | |
| Measurement method | True RMS | |
| Rated current input | 5 A | |
| Current input range | 0.05 to 5.75 A | |
| Primary measurement range | Up to 10,000 A with a suitable CT | |
| Current connection | External current transformers with 5 A secondary | |
| Measurement accuracy | ±0.5% full scale ±1 digit | |
| Operating frequency | 45 to 65 Hz | |
| Auxiliary supply voltage | 220 to 240 V AC | |
| Auxiliary supply frequency | 50 / 60 Hz | |
| Power loss | approximately 1.8 W | |
| Relay output | 1 programmable changeover contact | |
| Relay function | Control, alarm and protection | |
| Reset selection | Automatic or manual | |
| Display type | LED | |
| Installation type | 35 mm DIN rail mounting | |
| Module width | 3 DIN modules | |
| Dimensions (W × H × D) | approximately 53.5 × 105.4 × 63.1 mm | |
| Front protection rating | IP40 | |
| Terminal protection rating | IP20 | |
| Operating temperature | -20 to +60 °C | |
| Weight | approximately 276 g | |
| Package dimensions | 95 × 55 × 75 mm | |
| EAN | 8013975152232 | |
| Certification | EAC | |
| Conformity | IEC/EN 61010-1, IEC/EN 61000-6-2 and IEC/EN 61000-6-3 | |
| HS Code | 90303100 |
Frequently Asked Questions
What does the Lovato DMK71R1 measure?
The DMK71R1 measures and displays the AC current flowing through each phase of a three-phase electrical system.
Does the DMK71R1 require current transformers?
Yes. It is designed for indirect measurement through external current transformers with a 5 A secondary output.
What is the direct current input range?
The meter has a direct input measurement range of approximately 0.05 to 5.75 A.
What maximum primary current can the DMK71R1 display?
With a suitable current transformer and the correct programmed CT ratio, it can display primary current values up to approximately 10,000 A.
What is the programmable relay output used for?
The relay can activate an alarm, contactor or external control circuit when the measured current reaches a configured control or protection threshold.
How is the Lovato DMK71R1 installed?
The DMK71R1 mounts on a standard 35 mm DIN rail and occupies three DIN modules.
Trusted by Panel Builders and Electrical Engineers
Lovato Electric digital metering instruments are used by panel builders, automation engineers and maintenance professionals to provide dependable three-phase current monitoring, alarm signalling and equipment protection across industrial electrical installations.
