Why Choose the Lovato DM2TMA0300 Split-Core Current Transformer?
The Lovato DM2TMA0300 is a compact, pre-wired split-core current transformer designed for accurate current measurement in electrical distribution, energy monitoring and industrial metering systems. As part of the Lovato DM2TMA current transformer series, it provides a 300/5 A transformation ratio, converting a primary current of 300 A into a standard 5 A secondary signal for compatible measuring instruments.
Its split-core construction enables the transformer to be opened and installed around an existing conductor without disconnecting the primary cable or busbar. The 36 × 36 mm aperture provides generous conductor clearance, making the DM2TMA0300 particularly suitable for retrofit energy monitoring, switchboard upgrades and industrial electrical installations.
The transformer operates across 50–60 Hz and offers measurement performance of 0.5 VA at class 0.5 and 1.5 VA at class 1. A 2 m pre-wired secondary connection, 720 V rated insulation voltage and robust compact housing simplify integration with compatible energy meters, ammeters and power analysers.
Key Advantages
- Compact split-core current transformer for retrofit installations.
- 300/5 A transformation ratio for industrial current measurement.
- 36 × 36 mm conductor aperture accommodates suitable cables and busbars.
- Split-core construction allows installation without removing the primary conductor.
- 2 m pre-wired secondary connection simplifies panel installation.
- Accuracy performance of class 0.5 at 0.5 VA and class 1 at 1.5 VA.
- 120% continuous overload withstand relative to rated primary current.
Key Features
- Lovato DM2TMA current transformer series.
- 300 A rated primary current.
- 5 A rated secondary output current.
- 300/5 A current transformation ratio.
- 36 × 36 mm split-core aperture.
- 50–60 Hz operational frequency.
- 0.5 VA burden at class 0.5.
- 1.5 VA burden at class 1.
- 720 V rated insulation voltage.
- 2 m pre-wired connection.
- Class E dry-type insulation.
- Compliant with IEC/EN/BS 61869-1 and IEC/EN/BS 61869-2.
Reliable Current Measurement for Electrical Monitoring
Current transformers reduce high primary currents to a proportional secondary current that can be measured safely by compatible electrical instrumentation. The Lovato DM2TMA0300 converts a 300 A primary current into a standard 5 A secondary signal, enabling integration with energy meters, ammeters, multifunction meters and power-monitoring equipment.
The split-core design is particularly advantageous when adding measurement equipment to an existing electrical installation. The transformer can be opened and positioned around a suitable conductor without dismantling the primary circuit, while its 36 × 36 mm aperture and pre-wired secondary connection help reduce installation time in switchboards, distribution panels and energy-management systems.
Typical Applications
- Electrical energy metering systems.
- Industrial current and power monitoring.
- Retrofit energy-management installations.
- Electrical distribution boards and switchboards.
- Commercial and industrial power distribution systems.
- Power analysers and multifunction electrical meters.
- Building energy monitoring and sub-metering systems.
