BY71 0.45-40-3 Series Cylindrical Capacitor High-Efficiency Suppression Quick Response Low Voltage Cylindrical Shunt Self-Healing Power Capacitor

Model meaning

Product Datas of BY71 0.45-30-3  Cylindrical Capacitor

Overview of BY71 0.45-40-3  Series Cylindrical Capacitor 

Working Steps of BY71 0.45 - 40 - 3 Series Cylindrical Capacitor

The BY71 0.45-40-3 Series Cylindrical Shunt Self-Healing Power Capacitor is a cutting-edge solution designed to optimize electrical systems by addressing harmonic distortion, reactive power compensation, and voltage stability in low-voltage networks (380V systems). Engineered for industrial, commercial, and renewable energy applications, this smart cylindrical capacitor integrates advanced self-healing technology, rapid response capabilities, and intelligent control features to ensure reliable performance in demanding environments. Below is a detailed overview of its operational workflow and technical advantages:

1. Installation & Configuration

The BY71 capacitor is installed in parallel with the load to dynamically compensate for reactive power and suppress harmonics. Its cylindrical design (rated 0.45kV, 40kvar) ensures compact integration into low-voltage switchgear or dedicated compensation cabinets. Key steps include:

• Voltage Matching: Compatible with 380V grids, the capacitor employs a 450V-rated design to accommodate voltage fluctuations and future upgrades, such as adding reactors for harmonic filtering.

• Environmental Adaptation: Operates within a temperature range of -25°C to +50°C (expandable to -40°C/+70°C) and altitudes up to 5,000 meters, making it suitable for harsh industrial environments.

• Reactor Pairing: For harmonic-rich systems (THD >8%), a 6%-14% detuned reactor is recommended to prevent resonance and enhance harmonic suppression (e.g., 5th/7th harmonics).

2. Intelligent Reactive Power Compensation

The capacitor utilizes three-phase common compensation to balance reactive power demand dynamically:

• Real-Time Monitoring: Embedded sensors and an MCU continuously track grid parameters (voltage, current, power factor) to calculate the required compensation capacity.

• Adaptive Switching: Integrated thyristor-based composite switches enable zero-crossing switching (<10ms response), reducing inrush currents to 1.5× rated levels and minimizing harmonic amplification risks.

• Self-Healing Mechanism: Metalized polypropylene film automatically isolates localized dielectric breakdowns, maintaining >90% capacity post-fault and extending service life by 80% compared to conventional designs.

3. Harmonic Suppression & Grid Stability

In systems with nonlinear loads (e.g., VFDs, rectifiers), the BY71 series mitigates harmonic pollution through:

• Passive Filtering: Combined with reactors, it forms an LC circuit tuned to absorb dominant harmonics (e.g., 5th/7th).

• Overvoltage Protection: Withstands 2.15× rated voltage for 5 seconds and discharges to <50V within 3 minutes post-shutdown, ensuring compliance with standards.

• Thermal Management: Temperature sensors trigger alarms or shutdowns if core temperatures exceed 80°C, preventing overheating in poorly ventilated areas.

4. Smart Grid Integration & Maintenance

• IoT Connectivity: Supports Modbus TCP/RS485 communication for real-time data transmission to cloud platforms, enabling predictive maintenance and coordination with APF/SVG systems in hybrid compensation networks.

• Modular Design: Hot-swappable modules simplify replacements, reducing downtime in critical applications like data centers or solar farms.

• Energy Efficiency: Achieves a power factor of ≥0.95, cutting line losses by up to 30% and avoiding utility penalties for low power factor.

Product Functions of BY71 0.45 - 40 - 3 Series Cylindrical Capacitor

1. Intelligent Three-Phase Co-Compensation
   Enables dynamic three-phase reactive power compensation to balance loads and stabilize grid voltage, ideal for low-voltage (0.4kV) industrial systems with fluctuating nonlinear loads. Reduces line losses by up to 30% and optimizes power factor to ≥0.95357.

2. High-Efficiency Harmonic Mitigation
   Integrates non-tuning filtering reactors (6% or 12% detuned) to suppress 3rd, 5th, and 7th harmonics, preventing resonance risks in systems with >15% nonlinear loads (e.g., VFDs, rectifiers). Reduces THD by 40-60% and avoids harmonic amplification.

3. Ultra-Fast Response & Zero-Crossing Switching
   Utilizes thyristor-controlled dynamic switching (≤10ms response time) to eliminate inrush currents (<1.5× rated current), extending capacitor lifespan by 50% compared to traditional contactors.

4. Self-Healing Cylindrical Design
   Features metallized polypropylene film with auto-repair functionality: localized dielectric breakdowns self-isolate within 1ms, maintaining >90% capacitance integrity. Certified for 60,000-hour operational reliability under -25°C to +50°C conditions.

5. Compact Low-Voltage Power Capacitor
   Space-saving cylindrical structure with integrated temperature sensors and overvoltage protection. Rated for 450V systems, supporting 40kvar capacity per unit for easy scalability in tight panel layouts.

6. Energy-Quality Adaptive Control
   Embedded smart algorithms detect real-time grid imbalances and prioritize compensation for reactive power, negative-sequence currents, or harmonics. Compatible with IoT-enabled energy management platforms for remote monitoring.

7. Eco-Friendly Grid Resilience
   Reduces CO2 emissions by optimizing reactive power flow, aligning with global green energy initiatives. Ideal for solar/wind farms, EV charging stations, and smart grids requiring harmonic filtering and voltage flicker mitigation

Product Dimensions of  BY71 0.45 - 40 - 3 Series Cylindrical Capacitor