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High-voltage filter capacitors include high-voltage AC filter capacitors and high-voltage DC filter capacitors. High-voltage AC filter capacitors include AC filter capacitors and shunt capacitors for high-voltage DC transmission systems, and high-voltage AC filter capacitors for general high-voltage power systems. This type of capacitors is primarily used in 50Hz/60Hz AC power systems to provide a low-impedance path for higher harmonic current in the grid, improve power factor.

The LTT-2 reactor is a core-type structure developed as an enhanced version of the first-generation LTT-1. It has been widely used in HVDC transmission converter valves.

The ETT-6250 series is designed for use in ±800kV/6250A HVDC transmission converter valves. Developed independently by Jiashan Sun.King Electrical Equipment & Technology Co., Ltd..

The ETT-3.7 Anode Saturable Reactors is specialized reactors developed by Jiashan Sun.King Electrical Equipment & Technology Co., Ltd. for LTT-type reactors on Siemens converter valves.

The ETT-1100 Reactor was developed by Jiashan Sun.King Electrical Equipment & Technology Co., Ltd. starting in 2015, specifically designed for reactors in converter valves operating at a voltage level of ±1100kV.