Why Choose the Lovato DM4TA4000 Split-Core Current Transformer?
The Lovato DM4TA4000 is a high-capacity split-core current transformer designed for accurate current measurement in industrial switchboards, electrical distribution systems and energy monitoring installations. With a rated primary current of 4000 A and a standard 5 A secondary output, it converts high line currents into a safe and proportional signal for compatible energy meters, network analysers, ammeters and protection equipment.
Unlike a conventional solid-core transformer, the DM4TA4000 can be opened and installed around an existing conductor or busbar without disconnecting the primary circuit. This split-core construction makes it particularly suitable for retrofit projects, energy-management upgrades and maintenance work where minimising downtime and installation disruption is essential.
The transformer features a substantial 80 × 160 mm internal opening for large conductors and busbar assemblies. It provides a rated burden of 20 VA at accuracy class 0.5 and 25 VA at accuracy class 1, delivering reliable measurement performance for demanding high-current power distribution applications.
Key Advantages
- High-capacity 4000/5 A current transformation ratio.
- Split-core construction enables installation around existing conductors.
- Large 80 × 160 mm internal opening for substantial busbar systems.
- Helps reduce installation time by avoiding primary circuit disconnection.
- Class 0.5 and class 1 accuracy performance for metering and monitoring.
- Suitable for energy meters, network analysers, ammeters and protection relays.
Key Features
- Lovato Electric DM series current transformer.
- Split-core design for convenient retrofit installation.
- 4000 A rated primary current.
- 5 A rated secondary current.
- 50/60 Hz operating frequency.
- 20 VA burden at accuracy class 0.5.
- 25 VA burden at accuracy class 1.
- 120% rated primary-current overload withstand.
- 80 × 160 mm conductor opening.
- Secure screw-terminal secondary connections.
Flexible High-Current Measurement for Existing Installations
Current transformers reduce high primary currents to a standard secondary value that can be safely measured by compatible electrical instruments. The Lovato DM4TA4000 converts a primary current of up to 4000 A into a proportional 5 A signal, allowing connected equipment to monitor electrical loads without carrying the full line current.
Its split-core construction allows the transformer to be opened and positioned around an installed conductor or busbar. This provides a practical solution for adding energy monitoring, upgrading an existing metering system or replacing a current transformer where dismantling the primary circuit would be difficult, costly or disruptive.
Typical Applications
- Retrofit energy-metering installations.
- High-current industrial switchboards.
- Electrical distribution and busbar systems.
- Power quality and energy monitoring equipment.
- Digital multimeters and network analysers.
- Current indication and monitoring systems.
- Protection relay installations.
- Commercial buildings, infrastructure and manufacturing facilities.
