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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/450-15 Series Controlled Intelligent Capacitors Low Voltage Automatic Power Factor Correction APFC Panel Intelligent Capacitor Reactive Power Compensation
Model Meaning of BY86DS/450-15 Series Series Controlled Intelligent Capacitors

Main Product Datas of BY86DS/450-15 Series Series Controlled Intelligent Capacitors
| Model | BY86DS/450-15 Series Controlled Intelligent Capacitors |
| Rated voltage | 450V AC |
| Frequency | 50Hz |
| Capacity (Kvar) | 15 |
| 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/450-15 Series Controlled Intelligent Capacitors
Boost energy efficiency and stabilize your electrical systems with the BY86DS/450-15 Series Controlled Intelligent Capacitors from BaoYu Holdings. Designed for reactive power compensation, these high-power capacitors deliver precision 3-phase power voltage regulation, harmonic mitigation, and dynamic capacitor control to enhance power quality in low-voltage networks. Equipped with thyristor-controlled series capacitor (TCSC) technology and a capacitor equivalent circuit optimized for shunt capacitor and reactor integration, this series ensures reliable reactive power in capacitor systems for three-phase power distribution networks.
Ideal for industrial, commercial, and utility applications, these universal capacitors support 3-phase capacitor compensation with capacitor duty contactors and capacitor connected in series configurations to tackle power quality harmonics, unbalanced loads, and low-voltage current fluctuations. Engineered for durability, the low-voltage power capacitor features controlled intelligent capacitors with real-time monitoring, extending the life of capacitor performance while reducing energy losses.
Key features include harmonic filter capacitor integration for harmonic system resilience, generator capacitor compatibility, and adaptive capacitance and capacitor tuning to stabilize 3-phase voltage under varying loads. Whether addressing reactive power deficits, harmonic distortion, or low-voltage device protection, this large capacitor solution ensures seamless power quality and distribution optimization.Trust BaoYu’s expertise in power capacitor 3-phase technology to safeguard your infrastructure with AC capacitor reliability and dynamic capacitor responsiveness—perfect for power quality and harmonics management in demanding environments.

Functions of BY86DS/450 - 15 Series Controllable Intelligent Capacitor
Accurate harmonic suppression using filtering techniques
These controlled smart capacitors are equipped with built-in reactors and advanced filtering algorithms to effectively suppress harmonic distortion (3rd, 5th, 7th and higher harmonics) in low voltage power systems. This ensures compliance with IEEE 519 standards while protecting sensitive equipment from harmonic-related damage.
Three-phase combined compensation to achieve grid balance
Supports three-phase synchronous reactive power correction to solve the common phase imbalance problem in industrial and commercial loads. The system dynamically adjusts the compensation level to maintain the voltage and current balance of each phase, thereby reducing the neutral line current and improving the transformer efficiency.
Automatic Power Factor Correction (APFC) with dynamic regulation
Real-time reactive power monitoring is used to achieve automatic power factor correction, maintaining PF ≥ 0.95 under different loads. The intelligent controller can adapt to sudden load changes, ensure optimal energy efficiency, and avoid fines from power companies due to low power factor.
Zero surge switching ensures reliable operation
Microprocessor-controlled thyristor switches enable zero voltage/zero current switching, eliminating inrush current and overvoltage spikes during capacitor energization. This significantly extends the life of the capacitors and reduces mechanical stress on the switching equipment.
Self-diagnosis and remote monitoring capabilities
Built-in sensors monitor capacitor temperature, voltage, current and harmonic levels and provide real-time alarms for faults such as overvoltage, overheating or phase loss. RS485 communication can be integrated with SCADA systems for remote configuration and predictive maintenance.
Modular design for scalable low voltage applications
Compact plug-and-play modules simplify the installation of APFC switchboards, reducing wiring complexity by 80% compared to traditional systems. The design allows for easy expansion and is ideal for retrofitting existing distribution networks.
Temperature protection energy efficiency
If the internal temperature exceeds a safe threshold, the integrated thermal management system automatically disconnects the capacitor, preventing dielectric breakdown and ensuring long-term reliability. This feature is critical in high-harmonic environments where traditional capacitors are prone to premature failure.
Multi-mode operation for multi-functional grid optimization
Provides selectable control modes (power factor, reactive power or voltage-based) to adapt to different grid conditions. It switches seamlessly between full three-phase compensation and single-phase correction to optimize performance for balanced and unbalanced loads.

Working Steps of BY86DS/450 - 15 Series Controllable Intelligent Capacitor
Real-time grid parameter monitoring
The intelligent controller continuously measures key electrical parameters including low voltage (400V/660V), three-phase current/voltage unbalance, harmonic distortion (3rd-25th harmonics), and reactive power demand. Built-in sensors detect deviations from standards to ensure compliance with grid quality regulations.
Intelligent-driven harmonic analysis and mitigation
The system uses advanced FFT algorithms to identify harmonic sources (such as inverters, rectifiers) and calculate the best suppression strategy. The controlled smart capacitors dynamically deploy series reactors to suppress harmonic resonance while filtering out more than 50% of the dominant harmonics (such as 5th, 7th, 11th order).
Dynamic three-phase reactive power compensation
For three-phase combined compensation, the system balances the reactive power of all phases by deploying modular capacitor banks. It solves phase imbalance problems by adjusting the compensation level in real time, reduces neutral line current by up to 80%, and improves transformer efficiency.
Zero surge switching execution
Microprocessor-controlled thyristor switches ensure zero voltage/zero current switching, eliminating inrush current during capacitor energization (less than 1.2 times rated current). This prevents voltage spikes and extends capacitor life by 30% compared to conventional contactor-based systems.
Adaptive Power Factor Correction (APFC)
The APFC panel automatically adjusts the capacitor bank to ensure a power factor ≥ 0.95 under varying loads. It seamlessly switches between full three-phase compensation and single-phase correction to cope with unbalanced loads, thereby optimizing energy efficiency and avoiding power company fines.
Self-diagnosis protection mechanism
Built-in thermal sensor monitors capacitor temperature (threshold: 60°C) and triggers automatic disconnection to prevent dielectric breakdown. Overvoltage/undervoltage protection and phase loss detection functions ensure safe operation in high harmonic environments.
Remote monitoring and SCADA integration
RS485 communication enables real-time data transmission to a cloud platform or SCADA system. Users can remotely configure parameters (e.g. harmonic filter frequency band, compensation mode) and receive predictive maintenance alerts for faults such as capacitor aging or thyristor failure.
Modular scalability and easy retrofitting
Plug-and-play modules allow capacity expansion from 15 kvar to 300 kvar without rewiring. The compact design (30% smaller than conventional APFC panels) simplifies installation in existing switchgear, reducing retrofit time by 50%.

Wiring Method of BY86DS/450 - 15 Series Controllable Intelligent Capacitor

Relevant Size Information of BY86DS/450 - 15 Series Controllable Intelligent Capacitor


Modular plug-and-play architecture for scalable grid optimization
The BY86DS/450-15 series uses a patented modular design to redefine the scalability of low-voltage APFC systems. Each 15 kvar module integrates capacitor banks, thyristor switches and intelligent controllers into a compact 1U chassis that can be quickly deployed in new and retrofit projects. Compared with traditional contactor-based systems, this design reduces the wiring complexity of the switchboard by 80%, and its plug-and-play connector enables field upgrades from 15 kvar to 300 kvar without downtime.The modular approach also supports three-phase combined compensation and single-phase correction, which can dynamically balance reactive power between unbalanced loads (such as data centers, commercial complexes). For example, in a 400V system with a phase imbalance of 30%, the system automatically allocates 60% of the compensation to the poorly performing phase while keeping the neutral current ≤5%. The IP54-rated housing of these modules is dust and moisture-proof, suitable for harsh industrial environments, while its footprint is 30% smaller than traditional APFC panels, optimizing switchgear space.

Microprocessor control with zero-inrush switching
At the heart of the BY86DS/450-15 series is a dual-core microprocessor that integrates FFT harmonic analysis and fuzzy logic control to achieve sub-millisecond response times. The controller continuously monitors 128 parameters, including harmonic distortion (3rd to 25th harmonics), phase angle, and reactive power demand, dynamically adjusting the compensation strategy. For example, in a textile mill where motors are frequently started, the system reduces inrush current to less than 1.2 times the rated value through zero voltage/current switching, eliminating voltage sags and extending capacitor life by 50%.The intelligent control system also supports multi-mode operation, allowing users to select power factor correction (PF ≥ 0.95), reactive power regulation (accuracy ± 5 kvar) or voltage stabilization (tolerance ± 2%). This flexibility is critical for industries such as mining where fluctuating loads require adaptive compensation. In addition, the RS485 Modbus RTU interface can be seamlessly integrated with SCADA systems, providing real-time health diagnostics (e.g. capacitor aging, thyristor wear) and predictive maintenance alerts.
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Workshop Vedio
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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