The high-voltage automatic reactive power compensation device, based on the grid and load conditions of the 10 kV supply busbar, uses a control system to automatically switch capacitor banks in response to changes in reactive power demand, thereby achieving automatic reactive power compensation. This device provides automatic reactive power compensation, continuously tracks variations in reactive load, switches capacitor banks as needed, improves the power factor, and enhances power quality; it also features harmonic suppression, with series reactors that can be configured according to site-specific harmonic conditions to form LC resonant circuits for harmonic filtering; furthermore, it offers comprehensive protection for the capacitor bank, including overvoltage protection, undervoltage protection, overcurrent protection, zero-sequence voltage protection, and protection against unbalanced voltages in individual capacitor branches.
The GCS-type low-voltage withdrawable switchgear is suitable for power distribution systems in industries such as power generation, petroleum, chemical engineering, metallurgy, textile manufacturing, and high-rise buildings. In applications with a high degree of automation—such as large power plants and petrochemical complexes—that require interface with computer systems, it serves as a low-voltage complete set of distribution equipment for power distribution, centralized motor control, and reactive power compensation in three-phase AC systems with a frequency of 50 Hz, a rated operating voltage of 0.4 kV, and a rated current of 2,500 A or less.
The YZ-type AC low-voltage distribution cabinet is a new-generation low-voltage switchgear designed in accordance with the principles of safety, economy, rationality, and reliability. It is widely used in AC power distribution systems with a frequency of 50 Hz, a rated operating voltage of AC 380 V, and a rated current of up to 2,000 A.
The GCK low-voltage withdrawable switchgear is widely used in power distribution centers (PC) and motor control centers (MCC) of power plants, substations, industrial and mining enterprises, and high-rise buildings, serving as a complete low-voltage distribution system for power distribution, centralized motor control, and reactive power compensation in AC systems with frequencies of 50–60 Hz, rated operating voltages of 660 V and below, and rated currents of 4,000 A and below. In three-phase three-wire or three-phase four-wire systems, it is specifically employed for substation switching, feeder distribution, and dedicated motor applications within low-voltage distribution networks. While maintaining electrical performance that exceeds that of comparable products, the GCK low-voltage withdrawable switchgear features increased capacity and enhanced mechanical strength, along with an advanced structure, aesthetically pleasing appearance, high degree of protection, high safety and reliability, and convenient maintenance; it is thus well suited as a replacement and upgrade solution for conventional low-voltage switchgear assemblies.
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