Series Filter

Product Overview

The Series Filter is a passive filtering device consisting of high-voltage capacitors and inductors in an LC filter configuration. It is designed to be used in high-voltage power systems to effectively filter harmonics, particularly in 10~12kV three-phase circuits. The filter works by leveraging the impedance characteristics of different frequency currents to filter out high-frequency harmonic currents, reducing interference to electrical equipment. This product is known for its high reliability and durability, having been successfully deployed in various high-load power applications for years.

Features

• Efficient Harmonic Mitigation: The filter has low impedance for the fundamental current and high impedance for harmonic currents, effectively filtering harmonics across all frequencies.
• Simple Structure, Low Cost: The LC series filter design reduces costs, making it economically viable for various applications.
• High Voltage Adaptability: Suitable for high-voltage environments such as 12kV, 42kV, and 75kV, catering to a wide range of power load requirements.
• Extremely Low Insertion Loss: Provides ≥90dB insertion loss, improving power quality and system stability.
• Temperature Stability: Operates stably in a wide temperature range of -40°C to +70°C, ensuring long-term efficient performance.
• No Harmonic Amplification: Effectively suppresses harmonic currents generated by harmonic sources, preventing overheating and failures in equipment.
• Power Compensation: In addition to filtering harmonics, the filter compensates for reactive power, reducing equipment capacity requirements and power losses.

Applications

• Power Systems: Used in power lines to resolve harmonic issues in power systems, improving power quality and extending equipment lifespan.
• Electrical Equipment Protection: Prevents damage to electrical equipment such as capacitors and reduces relay protection malfunctions, ensuring the normal operation of equipment.
• Rail Electrification Systems: Used in three-phase circuits of electrified railways for harmonic mitigation and power compensation, ensuring voltage stability and improving operational efficiency.
• Communication Equipment Protection: Used outside the power system to reduce harmonic interference to communication and electronic equipment.
• Industrial Applications: Widely used in industrial power equipment that requires high voltage and current, ensuring system stability and efficiency.