Why Choose the Lovato DM33T1000 Current Transformer?
The Lovato DM33T1000 is a solid-core current transformer designed to convert a primary current of 1000 A into a standard 5 A secondary output for compatible electrical meters, power analysers and energy-monitoring equipment. Its large through-hole construction accommodates cables up to Ø44 mm and is also suitable for specified rectangular busbars.
Designed for accurate AC current measurement, the DM33T1000 provides Class 0.5 accuracy at 5 VA and Class 1 accuracy at 15 VA. It operates across 50–60 Hz, withstands continuous current up to 120% of its rated primary value and has a rated insulation voltage of 720 V.
The DM33T1000 accommodates 51 × 41 mm and 61 × 31 mm busbars as well as suitable cables through its Ø44 mm opening. Screw secondary terminals and support for DIN rail or screw fixing make it a practical choice for industrial switchboards, distribution panels and high-current energy-monitoring installations.
Key Advantages
- 1000/5 A transformation ratio for standard 5 A measuring inputs.
- Class 0.5 accuracy at 5 VA for accurate electrical measurement.
- Class 1 accuracy at 15 VA provides increased burden capability.
- Large Ø44 mm cable aperture for high-current conductors.
- Suitable for 51 × 41 mm and 61 × 31 mm busbars.
- Supports continuous overload up to 120% of rated primary current.
- 720 V rated insulation voltage.
- Flexible DIN rail or screw fixing.
- Complies with IEC/EN/BS 61869-1 and IEC/EN/BS 61869-2.
Key Features
- Lovato DM33T series current transformer.
- Solid-core through-hole construction.
- 1000 A primary rated current.
- 5 A secondary output current.
- Ø44 mm circular cable aperture.
- Suitable for 51 × 41 mm and 61 × 31 mm busbars.
- 50–60 Hz operational frequency.
- 5 VA burden at Class 0.5.
- 15 VA burden at Class 1.
- Class E dry insulation.
- Screw secondary terminals.
- DIN rail or screw fixing.
- IP30 protection rating.
High-Current 1000/5 A Measurement for Energy Monitoring
A current transformer reduces a high primary current to a proportional secondary current that can be measured by compatible instrumentation. The Lovato DM33T1000 converts a nominal 1000 A primary current into a standard 5 A secondary signal, allowing suitable ammeters, multifunction meters, energy meters and power analysers to monitor high-current electrical circuits without carrying the full primary current through the measuring instrument.
The large Ø44 mm cable opening and compatibility with 51 × 41 mm and 61 × 31 mm busbars make the DM33T1000 well suited to substantial electrical distribution systems. When installed around a busbar, the busbar should be positioned centrally within the transformer opening to support correct installation and measurement performance.
Typical Applications
- High-current electrical switchboards.
- Industrial power distribution systems.
- Three-phase energy-metering installations.
- Multifunction electrical meters.
- Power and network analysers.
- Building energy-management systems.
- Industrial energy and consumption monitoring.
- Busbar-based electrical distribution panels.
- Plant and production power monitoring.
- Commercial and industrial load analysis.
