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Power Capacitors
- BY71 Series Cylindrical Capacitor
- BSMJ Series Self-healing Low Voltage Shunt Capacitors
- BY86 Series Controlled Intelligent Capacitor
- BYKXG/F Series Anti-harmonic Intelligent Capacitor
- BY81 Series Intelligent Capacitor
- BY82J Series Anti-harmonic Intelligent Capacitor
- BY89 Series Intelligent Capacitor
- Intelligent Controller Series
- Reactor
- Intelligent Switch Series
- Alternating Current Contactor
- Multifunctional power instruments
- Circuit Breaker
- APF/SVG/SPC Cabinet & Module Series
BY86DS/450-20 Series Controlled Intelligent Capacitors 20 Kvar Power Bank Intelligent Power Factor Compensation Smart Capacitor with Over Voltage Protection
Model Meaning of BY86DS/450-20 Series Controlled Intelligent Capacitors
Main Product Datas of BY86DS/450-20 Series Controlled Intelligent Capacitors
| Model | BY86DS/450-20 Series Controlled Intelligent Capacitors |
| Rated voltage | 450V AC |
| Frequency | 50Hz |
| Capacity (Kvar) | 20 |
| Working temperature | -25℃~+50℃ |
| Relative moisture | ≤90% |
| Altitude | ≤2000m |
| Capacitance tolerance | -5+10% |
| Maximum Permissible Overpressure | 110% rated voltage |
| Compensation method | 3 phases simultaneous compensation |
| Height | 240mm |
Introduction of BY86DS/450-20 Series Controlled Intelligent Capacitors
BaoYu Holdings Co., Ltd. introduces the BY86DS/450-20 Series Controlled Intelligent Capacitors, a high-performance solution engineered to optimize Power Quality and energy efficiency in industrial and commercial power systems. Combining Thyristor Controlled Series Capacitor (TCSC) technology with Reactive Power Compensation capabilities, this High Power Capacitor dynamically stabilizes 3 Phase Power Voltage, mitigates Power Quality Harmonics, and addresses Three Phase Unbalance. Its intelligent design integrates a Capacitor Equivalent Circuit for rapid response, ensuring precise harmonic suppression (up to 25th order) and seamless adaptation to fluctuating loads, while Shunt Capacitor and Reactor configurations enhance system stability and compliance with standards.
Built for durability and versatility, the series features a Universal Capacitor structure compatible with Low Voltage Power Capacitor networks (450V) and medium-voltage grids. Robust components like Capacitor Duty Contactors and Over Voltage Protection mechanisms ensure extended Life of Capacitor and safety in harsh environments. The modular Capacitor Connected In Series architecture allows scalable configurations, from standalone Generator Capacitor synchronization to multi-Mvar grid-tied systems, supported by Dynamic Capacitor adjustments for real-time Reactive Power optimization.Ideal for industrial plants, renewable energy integration, and commercial facilities, the BY86DS series reduces energy waste, stabilizes Low Voltage Current in solar/wind farms, and improves Power Quality and Distribution in HVAC and data centers. With certifications including IEC 60831 and UL 810, BaoYu’s 20 Kvar modules deliver reliability, compliance, and tailored solutions for global clients seeking advanced Controlled Intelligent Capacitors and harmonic mitigation technologies.
Product Features of BY86DS/450 - 20 Series Controlled Intelligent Capacitor
1.Advanced intelligent control module
Equipped with a microprocessor drive system, it can monitor voltage, current and power factor in real time and automatically adjust reactive power compensation to maintain optimal grid efficiency. It integrates IoT communication protocols and can be seamlessly integrated into smart grid systems.
2. Harmonic suppression and mitigation
Harmonic filtering technology is used to suppress 3rd to 13th harmonics, reduce harmonic distortion (THDi) to less than 5%, and protect downstream equipment from resonance damage. It is very suitable for non-linear load environments such as variable frequency drives (VFDs) and LED lighting.
3. Dynamic reactive power compensation
Adopting thyristor switched capacitor (TSC) technology, it achieves sub-cycle response time (<20 ms) and ensures fast correction of lagging/leading power factor (target PF ≥0.98) in low voltage distribution network. Supports three-phase balanced and unbalanced compensation modes.
4. Overvoltage and overcurrent protection
Integrated self-healing metallized film capacitors with a voltage threshold up to 480V AC and surge protection (compliant with IEC 61000-4-5). Automatically disconnects when grid abnormalities occur to prevent capacitor bank failure.
5. Modular and scalable design
Modular 20 kVar power packs offer flexible capacity expansion through parallel configuration. Hot-swappable units minimize downtime for industrial and commercial applications that require 24/7 operation.
6. Energy efficiency optimization
Through reactive power compensation, line losses can be reduced by up to 30%, in compliance . Compatible with solar photovoltaic and electric vehicle charging systems, improving the utilization of renewable energy.
7. Three-phase public compensation
Advanced phase balancing algorithms are used to correct asymmetrical loads in low-voltage networks, stabilize voltage fluctuations and extend transformer life in facilities such as data centers and manufacturing plants.
8. Self-diagnosis and predictive maintenance
Built-in sensors track capacitor health indicators (temperature, ESR and capacitance drift) and generate alerts through the HMI or SCADA system. Lifespan can be extended to over 100,000 hours per endurance testing.
9. Compact and sturdy structure
Space-saving design with IP54-rated enclosure for harsh environments. Reliable operation in temperatures from -25°C to +55°C makes it suitable for global deployment in mining, oil/gas and tropical regions.
Working Principle of BY86DS/450 - 20 Series Controlled Intelligent Capacitor
BY86DS/450-20 series is an advanced intelligent capacitor designed for low voltage power system, which can realize intelligent power factor correction, harmonic suppression and three-phase unbalanced load compensation. Its operation integrates advanced controlled capacitor switching and reactive power compensation technology to ensure the best power quality improvement and energy efficiency.
Dynamic reactive power compensation
The capacitor uses thyristor switched capacitor (TSC) technology to dynamically adjust reactive power in real time. By continuously monitoring grid parameters (voltage, current and power factor), the embedded microprocessor control module calculates the required compensation capacity and switches the capacitor bank within 20 milliseconds to maintain the target power factor ≥ 0.9818. This minimizes reactive power loss and complies with IEC 60831 energy efficiency standards.
Harmonic suppression by series reactor
To address harmonic distortion issues in nonlinear load environments (e.g., inverters, LED lighting), capacitors integrate tuned series reactors (7% or 14% impedance) into the compensation circuit. This configuration shifts the system's resonant frequency away from the main harmonic orders (3rd, 5th, 7th, etc.), preventing LC resonance and suppressing harmonic amplification 1710. The reactor-capacitor combination also absorbs some of the harmonics, reducing the total harmonic distortion (THDi) to less than 5%, protecting downstream equipment from overheating and insulation damage.
Three-phase compensation
The capacitor uses a three-phase balanced compensation algorithm to correct asymmetrical loads in low-voltage networks. It automatically detects phase imbalance and redistributes reactive power to stabilize voltage fluctuations, thereby extending the service life of the transformer and complying with harmonic guidelines.
Overvoltage protection using ZnO surge absorbers
The system uses a ZnO-based overvoltage protection module to prevent switching transients. During capacitor bank switching, the ZnO valve array (with nonlinear voltage-current characteristics) quickly clamps overvoltage spikes to safe levels (<480V AC) by switching from a high-impedance state to a low-impedance state. The design has been verified to the IEC 61000-4-5 standard to prevent dielectric breakdown and extend capacitor service life39.
Intelligent self-diagnosis and communication
The capacitor is equipped with IoT-enabled RS-485/Modbus protocol for real-time data exchange with SCADA systems. Its self-diagnostic function monitors key indicators (temperature, capacitance drift, ESR) and triggers predictive maintenance alarms, achieving an operational reliability of more than 100,000 hours.
Wiring Method of BY86DS/450 - 20 Series Controlled Intelligent Capacitor
Product Size Information of BY86DS/450 - 20 Series Controlled Intelligent Capacitor
Applications of BY86DS/450-20 Series Controlled Intelligent Capacitors
Renewable energy grid connection and grid stability
In solar and wind farms, the BY86DS/450-20 series mitigates the intermittency of renewable energy by providing dynamic reactive power support. For example, during cloudy days for solar arrays, the system dynamically increases compensation to stabilize the voltage at the point of common coupling (PCC) to prevent grid instability. AI-driven harmonic analysis identifies inverter harmonics and calculates the best mitigation strategy to ensure compliance with grid regulations for distributed energy resources (DER).In wind farms, the three-phase combined compensation system balances the reactive power of fluctuating loads, reducing voltage flicker caused by turbine startup. The system's plug-and-play scalability allows capacity expansion from 20 kvar to 300 kvar without rewiring, making it ideal for remote wind facilities with limited maintenance access. By integrating with SCADA systems, operators can remotely configure compensation modes (e.g., voltage stabilization or reactive power regulation) to adapt to changing weather conditions.
Commercial buildings and data centers
In shopping malls, office buildings and data centers, the BY86DS/450-20 series effectively addresses the power quality challenges posed by LED lighting, HVAC systems and UPS. These facilities often have problems with voltage fluctuations and low power factor (PF < 0.9), resulting in increased energy costs and fines from power companies. The APFC panel automatically adjusts the capacitor bank to maintain PF ≥ 0.95, thereby optimizing energy efficiency and reducing monthly electricity bills by 15-20%.The system’s self-diagnostic protection function monitors capacitor temperature (threshold: 60°C) and triggers disconnection to prevent thermal runaway, a common risk in dense server rooms. For data centers with 48V DC systems, the modular design (30% smaller than traditional APFC panels) simplifies the retrofit of existing switchgear, while remote monitoring via RS485 allows real-time adjustment of compensation strategies during peak loads. This ensures a stable power supply for critical IT infrastructure and minimizes the risk of downtime.
Industrial manufacturing and heavy machinery operations
The BY86DS/450-20 series excels in harmonic suppression and reactive power compensation and is suitable for industrial facilities with many nonlinear loads, such as steel mills, chemical plants, and automotive assembly lines. In these environments, variable frequency drives (VFDs), arc furnaces, and robotic systems can generate significant harmonic distortion (e.g., 5th, 7th, 11th), which can degrade power quality and damage equipment. The controlled smart capacitor dynamically deploys 7% dry-type reactors to suppress harmonic resonance while filtering out more than 50% of the main harmonics to ensure compliance with the IEEE 519-2014 standard.For three-phase combination compensation, the system balances the reactive power of unbalanced loads (e.g., 30% phase imbalance in a 400V system) by adjusting the capacitor bank in real time, reducing neutral current by up to 80% and improving transformer efficiency. Zero-surge switching technology (less than 1.2 times rated current) eliminates voltage spikes during capacitor energization, extending component life by 30% compared to traditional contactor-based systems. This is critical for mechanical equipment such as CNC machines and conveyor belts, where voltage instability can cause production delays.
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Baoyu Holding Co., Ltd
Baoyu Holding Co., Ltd. was founded in 2015 and is located in Wenzhou City, Zhejiang Province. The location is excellent and the transportation is convenient. We have very rich industry experience and is a trusted supplier. The company has advanced production equipment and skilled front-line employees. Our company is mainly engaged in the production and sales of power quality products，such as active power filters, static var generators, intelligent capacitors, power capacitors, reactive power compensators, composite switches, capacitor contactors, thyristor switches, reactors. Our company knows that the development of the company depends on the innovation and quality of the products. Therefore, our products have strict quality control from the procurement of raw materials to the sale of finished products. The company has established a quality management system that meets the requirements of the international quality management system. The company continuously releases the original innovations according to the market and customer needs, and always maintains the novelty and innovation of the products. The company wants the customer's thoughts and urgency. Solving problems for customers and meeting customer needs is our eternal pursuit! Our company's products are sold worldwide. The company has won the unanimous recognition of consumers with satisfactory product quality and perfect after-sales service. We have a professional R & D team. We can accept O E M and O D M.We sincerely welcome friends from all over the world to visit our company and cooperate with us on the basis of long-term mutual benefits. We are looking forward to receiving your enquiry soon.
VOur storage facility utilizes precision climate control, automated 3D warehousing (which increases capacity by 200%), and integrated safety systems (including fire suppression, anti-static protocols, and monthly audits) to maintain zero oxidation and ensure product integrity. In addition, our cleanroom manufacturing facility features a combination of natural and LED lighting, optimized workflows, and cross-trained technicians to enhance efficiency. Automated quality control systems and ISO-certified processes ensure compliance with dimensional and electrical standards, while AI-driven analytics and stringent protocols help achieve near-zero defects. By integrating advanced automation, tailored solutions, and steadfast reliability, Baoyu provides durable, mission-critical power systems, reinforcing our status as the preferred global partner for industries that require precision and innovation.
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