BY71 0.45-30-3 Series Single Phase Cylinder Metallized Polypropylene Film Self-Healing Shunt Capacitor 450V Cylinder Capacitor

Model meaning

Product Datas of BY71 0.45-30-3  Cylindrical Capacitor

Overview of BY71 0.45-30-3  Series Cylindrical Capacitor 

The BY71 Series is a cutting-edge single-phase power capacitor engineered to enhance power quality and optimize energy efficiency in low-voltage capacitor systems (450V AC). Utilizing metallized polypropylene film and high-reliability self-healing technology, this shunt capacitor automatically repairs minor dielectric faults, ensuring uninterrupted performance and long service life in harsh industrial and commercial environments. Designed as a compact cylindrical capacitor, it minimizes spatial footprint while delivering robust shunt capacitor compensation to neutralize inductive loads, correct power factor, and reduce capacitor power loss. Its self-healing shunt capacitor design significantly lowers capacitor power consumption, making it ideal for power system capacitors in HVAC units, solar inverters, and motor-driven machinery. The 450V AC shunt capacitor excels in capacitor compensation applications, stabilizing voltage fluctuations and improving electrical power quality by mitigating reactive power imbalances. With a focus on durability, the BY71’s advanced dielectric structure resists overheating and oxidative degradation, ensuring consistent electric capacitor performance even under cyclic loading. Compliant with IEC and UL standards, this one capacitor solution serves as a cornerstone for power quality devices, offering seamless integration into single-phase grids to enhance power low voltage reliability and operational cost savings.

Tailored for electrical equipment modernization, the BY71 Series combines low-power voltageadaptability with precision engineering to address diverse power quality challenges. As an AC power capacitor, it performs the critical function of AC capacitor by storing and releasing reactive energy, thereby stabilizing capacitor power flow and reducing grid stress. Its cylindrical design capacitor not only enhances heat dissipation but also simplifies installation in space-constrained panels or renewable energy setups. The single-phase capacitor supports shunt capacitor compensation in residential, commercial, and industrial settings, effectively managing capacitor power consumption while extending the lifespan of connected power quality equipment like transformers and switchgear. The metallized film capacitor’s self-healing capability ensures minimal downtime, as micro-damage from voltage surges is autonomously repaired without manual intervention. For solar farms and wind turbines, the BY71 stabilizes low-voltage capacitor networks, mitigating harmonic distortions and aligning with global power energy efficiency standards. With a 100,000-hour operational lifespan and RoHS-compliant materials, this phase capacitor sets a benchmark for power quality products, offering unmatched reliability in power on capacitor applications. Whether deployed in standalone systems or integrated with smart grids, the BY71 Series elevates electrical power quality while driving sustainable energy utilization worldwide.

Working Principle of BY71 0.45 - 30 - 3 Series Cylindrical Capacitor

Self-healing technology and metallized polypropylene film structure
The BY71 series uses high-reliability self-healing technology in its metallized polypropylene film capacitor design to ensure its service life and stability. When a voltage surge or aging causes local dielectric breakdown, the metallization layer around the fault evaporates, isolating the damaged area and restoring insulation without interrupting operation. This self-healing parallel capacitor mechanism significantly reduces capacitor power loss and extends the service life of single-phase power capacitors. The ultra-thin polypropylene film minimizes internal resistance, enabling low power voltage operation (450V AC) while maintaining high capacitance retention. This innovative technology prevents catastrophic failures to ensure stable power quality, making it an ideal choice for power quality equipment under fluctuating grid conditions.
Compact cylindrical design and low loss performance
BY71 uses a compact cylindrical design capacitor to optimize the space efficiency of power system capacitor installation while enhancing heat dissipation. The cylindrical shape reduces electromagnetic interference and improves airflow, which is critical to minimizing capacitor power consumption in dense distribution panels. Its low-voltage capacitor structure (450V AC) uses a precision-wound metallized film layer to achieve low-loss reactive energy storage, which is critical for efficient parallel capacitor compensation. The design supports seamless integration into single-phase capacitor networks to stabilize low-voltage power systems by neutralizing inductive loads and correcting power factor. This capacitor solution is RoHS-compliant, ensuring environmentally friendly performance for electrical equipment in various industries.
Reactive power compensation and grid stability
BY71 is a dedicated shunt capacitor that performs capacitor compensation by injecting reactive power into the single-phase grid, offsetting inductive loads from motors, transformers, and HVAC systems. Its AC capacitor capabilities include storing and releasing energy in sync with the voltage cycle, reducing phase differences and improving power quality. This 450V AC shunt capacitor dynamically adjusts to load changes, mitigating voltage drops and harmonic distortion that degrade power quality products. By optimizing capacitor power flow, it minimizes grid stress and energy waste, meeting global power efficiency standards. Designed to improve the resiliency of power quality equipment, BY71 ensures stable operation of renewable energy systems and industrial machinery, and provides decades of reliable AC power capacitor performance.

Main Applications of BY71 0.45-30-3 Series Cylindrical Capacitor 

Industrial Manufacturing Facilities
BY71 single-phase power capacitors are ideal for plants using heavy machinery such as motors and frequency converters, where shunt capacitor compensation is essential to correct power factor and reduce capacitor power losses. Its metallized polypropylene film structure, combined with self-healing technology, ensures reliable operation in high-vibration environments and automatically repairs dielectric faults to maintain power quality. As a 450V AC shunt capacitor, it neutralizes inductive loads, stabilizes low-voltage capacitor networks, and minimizes capacitor power consumption in CNC machine tools or assembly lines. The compact cylindrical design saves space in crowded switchboards, while its long service life reduces maintenance costs for power quality equipment.
Smart buildings and data centers
In smart buildings and data centers, BY71 AC power capacitors handle reactive loads in HVAC systems and server farms, improving electrical equipment efficiency. Its low-power voltage design (450V AC) supports shunt capacitor compensation to stabilize low-voltage grids, preventing energy waste and voltage drops. This self-healing shunt capacitor can withstand frequent surges common in IT infrastructure, while the compact form factor of the cylindrical capacitor can be seamlessly integrated into modular power distribution units. By improving the performance of power quality equipment, it ensures uninterrupted power supply to the capacitor, which is critical to achieving LEED certification and reducing operating costs of energy-intensive facilities.
Renewable energy systems (solar/wind farms)
BY71 excels in solar and wind farms, where the functionality of AC capacitors is critical to managing reactive power and fluctuating generation in inverters. As a single-phase capacitor, it stabilizes 450V AC shunt capacitor networks, mitigating harmonic distortion and voltage fluctuations caused by intermittent renewable energy input. High-reliability self-healing technology ensures excellent durability in harsh outdoor conditions, while low-loss performance optimizes capacitor compensation efficiency. It is integrated into power system capacitors to improve power quality, ensure compliance and maximize the return on investment of sustainable projects by enabling grid-connected energy output to meet global power energy standards.

Product Dimensions