Product Introduction

        The DDG series high current generator is specially designed and manufactured for power departments and industrial and mining enterprises in electrical equipment tests such as current load tests and temperature rise tests for various switches, current transformers, and other electrical equipment. It is suitable for primary bus protection and calibration of current transformer ratios, and can also perform setting calibration for current relays and switches.

This series of products adopts a split/integrated structure depending on product volume and weight, featuring stepless adjustment of output current, balanced current rise, wide load variation range, reliable operation, simple operation, and safety. It is an ideal equipment for current boosting or temperature rise tests in industrial and mining enterprises.

Working Principle:

The instrument measurement circuit includes one current measurement loop and one current measurement loop. (Voltage testing can be added upon request) The volt-ampere characteristic function can be extended.

The current measurement loop includes a micro-current zero-impedance CT, a program-controlled amplifier circuit, and a sampling circuit.

The voltage measurement loop includes a PT isolation signal acquisition circuit, a program-controlled amplifier circuit, and a sampling circuit.

Using a 16-bit microcontroller and computer-based digital real-time acquisition methods, by measuring the amplitude of the voltage signal and based on the voltage proportional relationship, the high-voltage side voltage value can be calculated. By comparing the measured voltage signal amplitude with the set voltage value, automatic timing is achieved. Based on the current proportional relationship, the output current of the equipment can be calculated. By comparing the measured current/voltage signal amplitude with the set value, overcurrent protection is realized.

Performance Features:

1. This high current generator has two ammeters for monitoring large and small ranges.

2. The autotransformer adjusts smoothly.

3. Indicator lights and button operation make it simple to operate.

4. Integrated or split structure for easy movement.

Technical Specifications:

This model of high current generator is designed for a 5-minute short-time duty cycle. For intermittent operation, the energization time should be less than 2.5 minutes, and the duty cycle should be greater than 10 minutes. Its specifications and technical