The main circuit of the complete set of active power filter device is an IGBT power converter, which adopts the detection technology of instantaneous reactive power theory to automatically track the harmonic changes of the power grid, and has a high degree of controllability and rapid response. It overcomes the shortcomings of poor filtering effect of traditional passive filtering devices, prone to resonance, and can only compensate for fixed sub-harmonics, and can play a good filtering and compensation effect on various fast transient impact loads.

The Q series has a high level of standardization, serialization, and generalization. The three series have 28 basic specifications. Advanced design concept provides selection conditions with small size and large functions

The input (incoming) reactor is used at the input end of the frequency converter to protect the frequency converter from transient overvoltage effects; it also reduces surge and peak current, improves the true power factor, and improves the input current waveform. ; Inverter equipment will produce a large number of harmonics when it is working, and the input reactor can also prevent the harmonics generated by the inverter from affecting the power grid, so as to prevent the harmonics generated by the inverter from interfering with the normal operation of other electronic equipment .

After the shunt capacitor bank installed in the substation is out of operation, it must have a discharge device to release the internal charge. For the capacitor bank that implements automatic control switching, it is even more required to release its charge within a specified time. A safe voltage. The discharge resistance inside shunt capacitors often has certain quality problems, and its performance cannot meet the requirements of automatic switching. Therefore, the installation of special discharge coils is a necessary technical safety measure for shunt capacitors in substations.

JKW-17G high-voltage no-power automatic compensation controller is suitable for automatic adjustment of capacitor compensation devices in high-voltage distribution systems, so that the power factor can reach the user's predetermined state, improve the utilization efficiency of power transformers, reduce line losses, and improve the voltage quality of power supply.

VN1-12 series solid-sealed high-voltage vacuum circuit breakers are suitable for three-phase AC power systems with a rated voltage of 7.2-12kv and a frequency of 50Hz. They are widely used in power plants, substations, petrochemicals, metallurgy, manufacturing, airports and communities, etc. It is used for the protection and control of electrical facilities, especially suitable for places where frequent operation under rated current or multiple interruption of short-circuit current occurs. It can be installed in mobile or fixed air-insulated switchgear.

VN1-24 series solid-sealed high-voltage vacuum circuit breakers are suitable for three-phase AC power systems with a rated voltage of 24kv and a frequency of 50Hz. They are widely used in power plants, substations, petrochemicals, metallurgy, manufacturing, airports and communities, etc., as electrical facilities It is used for protection and control, especially suitable for places where frequent operation under rated current or multiple interruption of short-circuit current. It is completely interchangeable with VD4 and VEP circuit breakers, and can be installed in mobile or fixed air-insulated switch cabinets.

VN1-40.5 series solid-sealed handcart type high-voltage vacuum circuit breakers are suitable for three-phase AC power systems with a rated voltage of 40.5kv and a frequency of 50Hz. They are widely used in power plants, substations, petrochemicals, metallurgy, manufacturing, airports and communities, etc. As the protection and control of electrical facilities, it is especially suitable for places with frequent operation under rated current or multiple interruption of short-circuit current. It is completely interchangeable with VD4 and VEP circuit breakers, and can be installed in mobile or fixed air-insulated switch cabinets.

VS1(ZN63)-12 series indoor handcart type high voltage vacuum circuit breaker is a three-phase AC 50Hz, rated voltage of 12kv indoor switchgear, which can be used for the control and protection of industrial and mining enterprises, power plants, substations, and electrical facilities. , And suitable for frequently operated places. The operating mechanism is integrated with the circuit breaker body, and the design can be used as a fixed installation unit, or it can be equipped with a special propulsion mechanism to form a handcart unit.

VS1(ZN63)-12 series indoor fixed high-voltage vacuum circuit breaker is a three-phase AC 50Hz, rated voltage of 12kv indoor switchgear, which can be used for the control and protection of industrial and mining enterprises, power plants, substations, and electrical facilities. And it is suitable for places with frequent operations. The operating mechanism is integrated with the circuit breaker body, and the design can be used as a fixed installation unit, or it can be equipped with a special propulsion mechanism to form a handcart unit.

VS1(ZN63)-12 series indoor-mounted high-voltage vacuum circuit breaker is an indoor high-voltage switchgear. It is suitable for three-phase power systems with a rated voltage of 12kv and a frequency of 50Hz. It is used as a protection and control electrical appliance. Superiority, especially suitable for places that require frequent operation under rated current or multiple interruption of short-circuit current. It can be used for the control and protection of industrial and mining enterprises, power plants, substations, and electrical facilities, and is suitable for places with frequent operations.

VS1(ZN63)-24 series indoor high-voltage vacuum circuit breaker is an indoor high-voltage switchgear with rated voltage of 24kv and three-phase AC 50Hz. It is suitable for the control and protection of power transmission and distribution systems such as power plants, substations, industrial and mining enterprises, etc. The switch is especially suitable for places where important loads are disconnected and frequently operated in high altitude areas.