Why Choose the Lovato DM3TA1250 Split-Core Current Transformer?
The Lovato DM3TA1250 is a heavy-duty split-core current transformer designed for accurate current measurement in industrial switchboards, electrical distribution panels and energy-monitoring systems. Featuring a 1250/5 A transformation ratio, it converts a primary current of up to 1250 A into a standard 5 A secondary output for connection to compatible energy meters, ammeters, multifunction measuring instruments and power analysers.
Its split-core construction allows the transformer to be opened and installed around an existing cable or busbar without removing or rerouting the primary conductor. This makes the DM3TA1250 particularly suitable for retrofit metering projects, electrical upgrades and existing installations where downtime and installation work must be kept to a minimum.
With a large 80 × 120 mm internal opening, the DM3TA1250 accommodates substantial cables and busbars commonly found in high-current industrial power-distribution systems. Operating at 50-60 Hz, it provides a burden of 7.5 VA at accuracy class 0.5 and 15 VA at accuracy class 1, ensuring dependable performance in demanding applications.
Key Advantages
- Split-core construction enables installation around existing conductors.
- 1250/5 A transformation ratio for standard industrial metering equipment.
- Large 80 × 120 mm internal opening for high-current cables and busbars.
- Accuracy class 0.5 and class 1 options for reliable monitoring.
- Ideal for retrofit energy monitoring and sub-metering projects.
- Robust industrial construction for long service life.
Key Features
- Lovato DM3TA series split-core current transformer.
- 1250 A rated primary current.
- 5 A rated secondary current.
- 80 × 120 mm internal opening.
- 7.5 VA burden at accuracy class 0.5.
- 15 VA burden at accuracy class 1.
- 50-60 Hz operating frequency.
- 120% continuous overload withstand.
- 720 V rated insulation voltage.
- Screw terminals with screw fixing.
Reliable Current Measurement for Existing Installations
Current transformers safely convert high primary currents into proportional low-current outputs suitable for electrical measuring instruments. The Lovato DM3TA1250 converts currents up to 1250 A into a standard 5 A secondary output, allowing accurate monitoring without connecting measuring equipment directly to the power circuit.
The split-core construction is especially beneficial for retrofit installations. After safely isolating the electrical circuit, the transformer can be opened and installed around an existing conductor, significantly reducing installation time compared with conventional solid-core current transformers.
Typical Applications
- Industrial switchboards and power-distribution panels.
- Energy meters and multifunction measuring instruments.
- Power analysers and electrical monitoring systems.
- Building energy-management systems.
- Industrial automation and machinery panels.
- Commercial electrical distribution installations.
- Power quality monitoring.
- Retrofit metering and energy-efficiency projects.
