DDG Large Current Generator: Technical Overview and Design Features

The DDG Large Current Generator is a robust primary current injection test set designed for high-precision, high-current applications in electrical testing and validation. It serves as an essential instrument for testing protective devices, secondary circuits, current transformers, circuit breakers, and other equipment under realistic current-loaded or temperature-rise conditions. Widely adopted in power plants, substations, electrical manufacturing facilities, research institutes, and laboratories, the DDG series ensures reliable performance and safety compliance in demanding electrical environments.

Key Design Features:

1.Dual Ammeter Monitoring – Equipped with two ammeters for accurate current measurement across both high and low ranges, enabling precise monitoring and control during testing.

2.Freely Adjustable Auto-Transformer – Allows smooth and continuous current output adjustment, providing flexibility in test setup and operation.

3.User-Friendly Operation – Available in either pointer-type or digital LED display configurations. Features rotary knob control for intuitive and straightforward operation.

4.Modular Structure – Offered in both integrated and separated designs. Integrated units are compact and portable, while separated models facilitate easier transportation and installation for higher-current applications.

Technical Specifications Overview:

The DDG series covers a wide range of current capacities, from 500 A to 20,000 A, with corresponding power ratings from 3 kVA to 60 kVA. Below is a summary of key models:

1.500A Model: 3 kVA, integrated design, lightweight (48 kg), suitable for field testing.

2.1000A Model: 6 kVA, integrated, offers a balance of capacity and portability.

3.2000A–6000A Models: Transition to separated structures for improved heat dissipation and handling at higher currents. Power ratings range from 12 kVA to 36 kVA.

4.8000A–20000A Models: High-power units (48–60 kVA) designed with separated structures for stable, high-current output in fixed installations.

All models operate with a secondary output voltage of 6 V, ensuring safe and efficient current injection into low-impedance test circuits.

Application Notes:

1.Integrated units are ideal for on-site testing and applications requiring mobility.

2.Separated units are recommended for high-current, continuous-duty applications such as temperature-rise tests or circuit breaker calibration.

3.The choice between pointer and digital display depends on user preference for readability and data logging needs.

Conclusion:

The DDG Large Current Generator combines flexible design, precise control, and a scalable power range to meet diverse electrical testing requirements. Its robust construction and adaptable operation make it a reliable choice for technicians and engineers engaged in maintenance, commissioning, and validation of electrical systems.

GDZX is a manufacturer of power detection equipment, offering a diverse range of products with comprehensive models and providing professional technical support. Contact us at +86-27-6552607 or +86-17396104357.Website: http://en.gdzxdl.com/