【overview】Variable frequency series resonant withstand voltage test equipment is mainly used for AC withstand voltage test of cross-linked cable, hydraulic generator, main transformer, bus, GIS and so on. It is composed of variable frequency control power supply, excitation transformer, reactor, capacitor voltage divider and compensation capacitor. Because the voltage, waveform and frequency and the electric field state inside the insulation of the tested object are consistent with the actual operation, and the test voltage is higher than the actual operation voltage, therefore, the insulation strength is strict, direct and effective method.

Variable frequency series resonant withstand voltage test equipment is mainly used for AC withstand voltage test of cross-linked cable, hydraulic generator, main transformer, bus, GIS and so on. It is composed of variable frequency control power supply, excitation transformer, reactor, capacitor voltage divider and compensation capacitor. Because the voltage, waveform and frequency and the electric field state inside the insulation of the tested object are consistent with the actual operation, and the test voltage is higher than the actual operation voltage, therefore, the insulation strength is one of the strict, direct and effective methods, which is of decisive significance to judge whether the electrical equipment can be put into operation, and is also an important means to ensure the insulation level of electrical equipment and avoid insulation accidents. With a wide range of application, it is an ideal pressure-resistant equipment for high-voltage test departments at the ground, city and county levels and power installation and repair engineering units.

System functions:

1. Imported power components | transformation core

The system uses imported power components as the core of power conversion, and the voltage output and frequency output are stable. After many high-voltage direct short-circuit tests, the system remains intact, and the system also has a strong overload capacity.

2. Automatic manual | multiple combination test modes

The system supports "automatic tuning manual pressure regulation","automatic tuning automatic pressure regulation","manual tuning manual pressure regulation" and other test modes. It is recommended to use "automatic tuning manual pressure regulation" mode,

3. SPWM IPM | Professional Chip Module

A dedicated SPWM digital waveform generator chip is used; an orthogonal non-synchronous fixed carrier modulation method is used; and an advanced IPM module is used in the power part.

4. Perfect protection function | reliable performance

The protection function is perfect, with zero protection (when the voltage output control knob is not in zero position, the system is prohibited from starting), overvoltage protection, overcurrent protection, flashover protection and other functions to ensure the reliability of the system.

Article Link: Intelligent Manufacturing Network https://www.gkzhan.com/tech_news/detail/375441.html

None

Overview of Operation Test of Electrical High Voltage Test Equipment

None

Overview of Operation Test of Electrical High Voltage Test Equipment

2023-12-29

Talk about the principle and function of variable frequency series resonant voltage withstand test equipment

2024-01-26

Overview of Operation Test of Electrical High Voltage Test Equipment

In addition to the long-term operation under rated voltage, the power generation, supply and consumption equipment in the power system must have the insulation strength under overvoltage. Overvoltage refers to the voltage rise that exceeds the normal operating voltage, which is the damage of electrical equipment or protective equipment. In all kinds of power system accidents, a large part is caused by the insulation damage of equipment caused by overvoltage. When the insulation is defective, if it is not found and eliminated in time, it will eventually lead to equipment damage and power failure.

2024-01-13

Characteristics of gas-filled test transformer

The inflatable test transformer is a brand-new test equipment, which adopts the characteristics of GIS combination cabinet, with small quality, light volume and beautiful appearance. Its technical indicators have reached the standard requirements, high insulation strength, compressive strength for the same pressure of nitrogen 2.5 times, 2.5 times the breakdown voltage of air. It is equal to the breakdown voltage of oil at 0.25MPa and twice the breakdown voltage of oil at 0.45MPa.