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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/450-30 Series Controlled Intelligent Capacitors Power Factor Improver PFI Device APFC Power Capacitor
Model Meaning of BY86DS/450-30 Series Controlled Intelligent Capacitors
Main Product Datas of BY86DS/450-30 Series Controlled Intelligent Capacitors
| Model | BY86DS/450-30 Series Controlled Intelligent Capacitors |
| Rated voltage | 450V AC |
| Frequency | 50Hz |
| Capacity (Kvar) | 30 |
| 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 |
Overview of BY86DS/450-30 Series Controlled Intelligent Capacitors
Product Functions of BY86DS/450 - 30 Series Controlled Intelligent Capacitor
1. Advanced harmonic suppression and reactive power compensation
The smart capacitor has built-in anti-harmonic reactors and uses an adaptive algorithm to dynamically compensate for reactive power while suppressing the 3rd, 5th, 7th and 11th harmonics to ensure compliance with GB/T 14549 standards. It is ideal for non-linear loads such as industrial inverters and rectifiers.
2. Three-phase balanced compensation (three-phase total compensation)
Supports three-phase co-compensation and split-phase compensation modes to solve voltage imbalance problems and optimize the power factor (PF) in low-voltage distribution systems to above 0.98. Line losses are reduced by up to 30% and fines from power companies are avoided.
3. Intelligent zero-crossing switch technology
The use of magnetic latching relays and thyristor-based zero-crossing switching technology eliminates inrush current (less than 2% of rated current) and achieves arc-free operation. It ensures more than 200,000 switching cycles and harmonic distortion less than 0.2%, thereby extending the service life of the capacitor by .
4. Self-diagnosis and real-time monitoring
Integrated IoT sensors monitor parameters such as temperature, voltage total harmonic distortion (THD), current unbalance and capacitor health. Overvoltage (>110% Un), undervoltage (<80% Un) and overtemperature (>85°C) alarms ensure fail-safe operation.
5. Modular design for scalable solutions
The modular structure allows units to be stacked in parallel (up to 15 kVAR per module), enabling flexible capacity expansion. The hot-swappable design simplifies maintenance without shutting down the system.
6. Active Power Factor Correction (APFC) Integration
The boost PFC topology combined with the TDA16888 control IC achieves PF >0.99 over a wide input voltage range (90–270 V), reduces grid harmonic pollution by 95%, and improves energy efficiency by 15%.
7. High temperature elasticity and anti-resonance protection
It uses F-class insulation, self-healing metallized film capacitors and 5%-7% detuned reactors to effectively prevent resonant amplification. The operating temperature range is -25°C to +55°C, and the protection level reaches IP233.
8. Dynamic load adaptability
Automatically synchronizes with the DSP-based controller to adjust compensation within 20 milliseconds, ideal for rapidly changing loads such as arc furnaces and CNC machines. Voltage stability is maintained within ±1%.
9. Energy efficiency optimization
Advanced dielectric materials and low ESR (equivalent series resistance) design reduce active power loss by 40%. Complies with ISO 50001 energy management standards.
10. Plug and Play installation and remote management
Pre-configured terminal blocks and DIN rail mounting for quick deployment. Supports Modbus RTU/RS485 communication and can be integrated into SCADA or smart grid systems for remote parameter configuration and data logging.
Working Principle of BY86DS/450 - 30 Series Controlled Intelligent Capacitor
BY86DS/450-30 series controlled smart capacitors are advanced power factor correction (APFC) devices designed to optimize power quality by dynamically managing reactive power compensation and improving the power factor (PF) of low voltage (0.4kV) distribution systems. Its working principle is as follows:
Real-time monitoring and dynamic adjustment
The device is equipped with built-in sensors and a microprocessor-based control unit that continuously monitors grid parameters such as voltage, current, and power factor26. Based on real-time load fluctuations, it automatically adjusts the capacitor value to inject or absorb reactive power (kVAR), ensuring that the power factor remains within the optimal range (typically 0.95–0.98).
Zero-crossing switching technology
Utilizing thyristor-based zero-crossing switching, capacitors are activated or deactivated at the voltage/current zero point. This minimizes inrush current and voltage spikes, reduces grid stress, and extends component life.
Three-phase compensation mode
The device supports three-phase balanced compensation (suitable for uniform load) and split-phase compensation (suitable for unbalanced load), ensuring accurate distribution of reactive power in all phases. This flexibility solves the three-phase imbalance problem and improves system stability.
Harmonic suppression and protection
Integrated harmonic filters and protection circuits mitigate harmonic distortion (up to 50th order) caused by nonlinear loads (e.g., inverters, LED lighting). Overvoltage, undervoltage, overcurrent, and temperature protection functions prevent grid anomalies, ensuring reliable operation even in harsh environments.
Modular and compact design
The BY86DS series integrates smart metering, capacitors and switch components into a modular unit, eliminating the need for complex wiring and external controllers. Compared with traditional capacitor banks, the installation space is reduced by 60%.
Wiring Method of BY86DS/450 - 30 Series Controlled Intelligent Capacitor
Product Size Information of BY86DS/450 - 30 Series Controlled Intelligent Capacitor
Use high-quality materials to effectively suppress harmonics
The BY86DS/450-30 series is designed for harmonic control, with built-in harmonic filters and low ESR (equivalent series resistance) capacitor elements. These capacitors are made of self-healing metallized polypropylene film to resist performance degradation caused by high-frequency harmonics up to the 50th order. This material not only improves durability, but also minimizes energy loss, ensuring efficient reactive power compensation even in environments with heavy non-linear loads such as variable frequency drives (VFDs) and welding equipment.The anti-harmonic design includes a detuning reactor to suppress specific harmonic frequencies, prevent resonance and stabilize the grid. By reducing harmonic distortion, the device prevents equipment overheating, voltage instability and premature failure - critical in an industry where downtime is costly. In addition, the three-phase capacitor design allows independent phase regulation, correcting three-phase imbalance and reducing neutral current, which is critical for single-phase load grids commonly found in data centers and electric vehicle charging stations.
Durable structure suitable for extreme environments
The BY86DS/450-30 series focuses on reliability and adopts a modular IP65 protection grade housing to provide comprehensive dust and water protection. The housing is made of corrosion-resistant aluminum alloy to ensure long-term stable operation in harsh industrial environments, outdoor installations or high humidity environments. The internal low-voltage capacitor bank is encapsulated with epoxy resin, which has good thermal stability and anti-vibration mechanical properties, which is essential for applications such as renewable energy systems and mobile machinery.The design also emphasizes easy integration. The compact, space-saving structure enables it to be easily retrofitted into existing switchgear, while the plug-and-play modular design simplifies maintenance and expandability. For example, additional capacitor banks can be added through a master-slave configuration to meet growing power needs without replacing the entire system. With an operating temperature range of -25°C to +60°C and a service life of more than 100,000 cycles, the BY86DS/450-30 series provides unparalleled low-voltage capacitor (LVC) performance, making it an ideal choice for mission-critical applications that require extreme durability and efficiency.
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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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