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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
BY83JF Series Intelligent Capacitor Controller 480V High Quality PFC Capacitor Bank Switch Gear Cabinet Controllers Regulators From Ningbo Capwin
Main Technical Parameters of Intelligent Capacitor Controller
| Model | BY83JF | |
| Compensation Method | Mixed Supplementation | |
| Working Environment | Temperature | -40℃~+55℃ |
| Relative Moisture | 20%~90% at 40℃ | |
| Atmospheric Pressure | 79.5~106.0kpa | |
| Operation Power Supply | Working Voltage | AC 50Hz,480V±20% |
| Function Consumption | <30VA | |
| Measurement Discripancy | Voltage | Level 0.5 |
| Current | Level 0.5 | |
| Power Factor | Level 1.0 | |
| Reactive Power | Level 1.0 | |
| Power Factor | ±0.01 | |
| Control accuracy | Power Factor | ±0.01 |
| Reactive Power | ±120% of Minimum Capacitor Capacity | |
| Mechanical Specification | Overall Dimensions(W×H×D) | 120×120×95mm |
| Opening Size(W×H) | 113×113mm | |
Introduction of Intelligent Capacitor Controller
Advantages of Intelligent Capacitor Controller
1. Advanced intelligent control and real-time monitoring
The BY83JF series intelligent capacitor controller integrates cutting-edge microprocessor technology to achieve autonomous reactive power compensation and real-time grid parameter analysis. Equipped with an industrial-grade MCU, the controller can dynamically track power quality issues such as harmonic distortion and three-phase imbalance to ensure optimal performance of PFC capacitor banks and switchgear. The system's intelligent algorithm can quickly (within 1 second) adjust to reactive power demand fluctuations, significantly reducing power losses and enhancing grid stability. It has a built-in RS-485 communication interface and LCD display, providing remote monitoring, data logging and diagnostic functions, and is an ideal solution for intelligent power management in commercial and industrial applications.
2. Precision voltage regulation and harmonic suppression
The controller is equipped with 7% reactors and advanced zero-crossing switching technology to effectively suppress 5th and 7th harmonic distortion and prevent capacitor overheating and premature aging. Its high-precision voltage regulation ensures stable operation under different loads, while the composite switch design eliminates inrush current during capacitor bank activation. The controller supports centralized and distributed compensation strategies and can be seamlessly integrated with 480V PFC capacitor banks to achieve power factor correction (PFC) up to 0.99. By minimizing harmonic interference, it can protect sensitive equipment and reduce maintenance costs of industrial power systems.
3. Adaptive three-phase unbalance compensation
Designed to address power imbalance issues on specific phases, the BY83JF controller provides independent phase control for capacitors, ensuring balanced reactive power distribution across all phases. This adaptive compensation mechanism optimizes energy efficiency in applications with unbalanced loads, such as manufacturing plants and data centers. The system’s automatic diagnostics detect faults such as overvoltage, undervoltage, and overtemperature, and immediately trigger protective measures to prevent equipment damage. With its ability to correct three-phase imbalance, the controller improves grid reliability and extends the life of connected electrical components.
4. Energy efficiency and cost savings
The BY83JF series reduces line losses by up to 30% and lowers electricity bills through improved power factor correction by dynamically matching reactive power supply and demand. Its intelligent cycle switching algorithm prevents overuse of individual capacitors, ensuring even wear and extending component life. The controller's low-power design (less than 5W standby power consumption) minimizes energy consumption during idle periods, while its compatibility with renewable energy systems enables seamless integration into hybrid grids. For industries facing high reactive power penalties, this solution provides a quick return on investment by optimizing energy use and complying with utility standards.
5. Sturdy structure and reliable performance
The BY83JF controller uses high-quality materials and industrial-grade components to withstand harsh environmental conditions (operating temperature: -25°C to +70°C) and ensure long-term durability. Its modular design allows for easy maintenance and expansion, and the IP54-rated housing provides protection against dust and moisture. The system has comprehensive safety features, including surge protection, overcurrent protection, and thermal shutdown, ensuring uninterrupted operation in critical applications. The controller has been rigorously tested and complies with international standards (CE, RoHS), providing peace of mind for mission-critical power systems.
6. Easy integration and multi-functional compatibility
The BY83JF series adopts a plug-and-play design to minimize wiring and configuration time. It supports multiple communication protocols (Modbus RTU, Profibus) and can be seamlessly integrated with existing SCADA systems to achieve centralized control and remote management. The controller is compatible with various capacitor banks, switchgear and voltage levels (primary side 480V) and can adapt to various industrial environments. Whether it is to transform existing systems or deploy new smart grids, its user-friendly interface and flexible design make it a versatile choice for global customers seeking reliable power quality solutions.
Working Steps of Intelligent Capacitor Controller
Step 1: System initialization and self-diagnosis
After power-up, the BY83JF series smart capacitor controller initiates a comprehensive self-diagnostic routine to verify sensor connections, communication protocols (Modbus RTU/Profibus), and power supply stability. The controller is equipped with an industrial-grade MCU and calibrates voltage and current inputs through precision CT/PT modules to ensure accurate measurement of grid parameters such as reactive power demand and power factor. The controller then establishes a secure data link with the connected PFC capacitor bank and switchgear to achieve real-time status synchronization. Keywords: smart capacitor controller, self-diagnosis, power factor correction.
Step 2: Real-time grid parameter acquisition
The system uses advanced ADC converters and multi-channel sensors to continuously monitor key power quality indicators:
• Harmonic distortion of voltage/current waveforms (5th/7th)
• 480V network three-phase balanced
• Reactive power fluctuation (kVar)
• Temperature/load curve of capacitor bank
Step 3: Adaptive Control Algorithm Execution
The controller uses a hybrid control strategy that combines PID regulation and fuzzy logic to dynamically optimize compensation:
1. Reactive power tracking: Calculate the required capacitance based on the real-time reactive power shortage and adjust the capacitor bank within 1 second
2. Harmonic suppression: Start 7% reactor and zero-crossing switch to suppress harmonic current
3. Phase balancing: independent phase control for uneven loads (e.g. manufacturing facilities)
4. Energy saving mode: Standby power is reduced to less than 5W during low demand periods
Step 4: Dynamic Capacitor Bank Drive
The controller adopts composite switching technology (thyristor + magnetic latching relay) to achieve accurate capacitor switching:
• Soft-start activation: Minimizes inrush current through zero voltage triggering
• Gradual deactivation: ensures smooth disconnection during load shedding
• Load analysis: supports centralized (single group) and distributed (multi-group) compensation strategies
Step 5: Continuous monitoring and closed-loop adjustment
A dedicated watchdog circuit monitors the health of the capacitors and triggers protection measures for abnormal conditions:
• Overvoltage/undervoltage: Automatically disconnect the affected battery pack
• Overheating: Shut down the system when over 60°C
• Component failure: Identify faulty capacitors/switches through impedance analysis
At the same time, the controller recalibrates the compensation settings every 15 seconds to adapt to load changes, ensuring consistent performance on a dynamic grid. Keywords: closed-loop control, fault detection, grid reliability.
Step 6: Data Integration and Remote Management
The BY83JF series supports seamless integration with SCADA/EMS systems via Modbus RTU and Ethernet protocols, enabling:
• Centralized control: remote configuration of set points and compensation strategies
• Predictive maintenance: Analyze historical data to predict component performance degradation
• Grid-scale optimization: Coordination with renewable energy systems (e.g. solar/wind farms) to achieve hybrid power management.
Wiring Method of Intelligent Capacitor Controller
The electrical schematic for the rear panel must be consulted during the installation of the controller since it indicates how the wiring must be done. The wiring method is as follows:
UA, UB, and UC are for connection to the three-phase voltages A, B, and C, respectively, while UN is for connection to the neutral line;
La+, La-, Lb+, Lb-, Lc+, and Lc- are for connection to the three-phase currents A, B, and C;
A and B are for the RS485 communication interface, which can be connected to the communication port of a low-voltage intelligent capacitor.
Note: When all smart capacitors are canceling capacitors, only Lb+ and Lb- are eligible to be connected to the B-phase current line.
Applications of Intelligent Capacitor Controller
Commercial buildings and smart grids
In commercial environments such as office buildings, shopping malls and data centers, the BY83JF series effectively addresses the challenges posed by non-linear loads such as LED lighting, UPS systems and elevators, which generate harmonics and increase neutral current. The controller's smart capacitor bank technology mitigates these issues by dynamically compensating for reactive power and suppressing harmonic distortion. For example, in high-rise buildings with constantly changing energy demands, the BY83JF series ensures stable voltage levels, preventing light flickering and equipment failure.The controller is compatible with smart grid infrastructure, enabling remote monitoring and adaptive control, and is ideal for green building certifications such as LEED. By optimizing power distribution, commercial facilities can reduce peak demand electricity charges and comply with grid regulations. In addition, the BY83JF series supports integration with building management systems (BMS), enabling centralized monitoring of energy consumption and reducing carbon footprint.
Renewable energy grid connection and grid stability
As solar and wind farms expand around the world, the BY83JF series plays a key role in maintaining grid stability and optimizing energy conversion. Renewable energy sources typically generate fluctuating voltages and harmonics due to inverter operation. The BY83JF controller's PFC capacitor bank technology stabilizes these fluctuations by providing fast reactive power compensation, ensuring seamless grid access. For example, in a solar photovoltaic (PV) plant, the controller adjusts the capacitor bank in real time to offset voltage sags caused by cloud cover, maximizing power generation.The series also solves the problem of harmonic pollution in inverters, protecting transformers and other grid equipment from premature failure. Its intelligent regulation function supports island operation, ensuring continuous power supply during grid outages. The BY83JF series enhances the reliability of microgrids and distributed energy resources (DER) by improving power factor and reducing harmonic distortion, in line with global decarbonization goals.
Industrial automation and manufacturing facilities
The BY83JF series of smart capacitor controllers are ideal for industrial environments where large machinery, variable frequency drives (VFDs), and motor drive systems operate. These environments often have problems such as harmonic distortion, reactive power loss, and voltage instability, which can reduce equipment performance and increase energy costs. The BY83JF series integrates advanced capacitor controller technology to dynamically balance reactive power demand, ensure optimal power factor correction (PFC), and reduce harmonic pollution. For example, in a manufacturing plant equipped with a robotic assembly line or heating, ventilation, and air conditioning (HVAC) system, the controller's real-time monitoring function can detect voltage fluctuations and adjust the capacitor bank to maintain stable operation. This not only improves mechanical efficiency, but also extends equipment life by minimizing thermal stress caused by harmonic currents.Key features such as intelligent controller functionality and three-phase unbalance correction make it a key component of modern industrial power distribution systems. The BY83JF series supports seamless integration with PLC and SCADA systems to achieve predictive maintenance and energy management. By reducing reactive power consumption, factories can achieve up to 30% energy savings, which is in line with the Industry 4.0 initiative that focuses on sustainability and operational efficiency.
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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.
Our 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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