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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
BY82JS/480-25/P7 Series Intelligent Combined Anti-Harmonic Low Voltage Power Capacitor Compensation Device Intelligent Power Capacitor 480V Power Capacitor
Model Meaning
Main Specifications of BY82JS/480-25/P7 Anti - Harmonic Capacitors
| Model | BY82JS/480-25/P7 | |
| Working power supply conditions | Rated voltage | 480V |
| Voltage deviation | ±20% | |
| Power frequency | 47.5~52.5Hz | |
| Power consumption | <5W(When cutting off the capacitor) | |
| Measurement deviation | Voltage | ≤0.5%(Within the range of 80-120% rated voltage) |
| Current | ≤1% | |
| Temperature | ±1℃ | |
| Reactive power compensation situation | Capacitor switching interval time | >10S |
| Reactive capacity | Single unit ≤50Kvar (three-phase), ≤30Kvar (split phase) | |
| Online | ≤31units | |
| Reliability parameters | The accuracy of control | 100% |
| Control allowed number of times | 1 million times | |
| Attenuation rate of working time of capacitor capacity | ≤1%/year | |
| Attenuation rate of capacitor capacity switching | ≤0.1%/10000 times | |
| Failure rate of annual | ≤0.1% | |
| Environment situation | Surrounding environment temperature | -40℃~+40℃ |
| Relative humidity | 40℃，20~90% | |
| Altitude | ≤2000m | |
| Electrical security | The electrical gap and creepage distance, insulation strength, safety measures, short-circuit isolation, and implementation and control circuit protection all adhere to the relevant stipulations of the Chinese power industry standard DL/T842-2003 “Conditions for Use of Low Voltage Parallel Capacitor Devices.” | |
Product Introduction to BY82JS/480-25/P7 Anti - Harmonic Capacitors
Main Functions of BY82JS/480-25/P7 Anti - Harmonic Capacitors
1. Advanced harmonic suppression and elimination technology
The BY82JS/480-25/P7 series integrates intelligent anti-harmonic capacitor technology to eliminate harmonic distortion (up to 50th order) generated by non-linear loads such as inverters, UPS systems and industrial rectifiers. The series is equipped with anti-harmonic power capacitors, which use adaptive filtering algorithms to detect and suppress harmonic currents in real time, reducing total harmonic distortion (THD) to less than 5%. This harmonic suppression function complies with IEEE 519 standards and protects sensitive equipment from overheating, voltage flicker and resonance problems. Its intelligent harmonic elimination module automatically adjusts the compensation level according to load fluctuations, making it an ideal choice for manufacturing plants, data centers and renewable energy systems that are troubled by harmonic pollution.
2. Reactive power compensation and energy optimization
Designed as a low voltage smart power capacitor, the device provides precise reactive power compensation to correct low power factor (PF) in 480V AC systems. By dynamically switching 480V power capacitor banks, it balances inductive loads from motors, transformers, and welders, boosting PF to levels close to 1. This reduces grid losses, minimizes utility fines, and reduces energy costs by up to 20%. The smart capacitor compensation system uses real-time voltage and current data to optimize capacitor switching sequences, prevent overcompensation, and enhance grid stability.
3. Self-protection and durability in harsh environments
The BY82JS/480-25/P7 series features rugged, anti-harmonic AC capacitors with self-healing dielectric technology to ensure long life in high temperature, high humidity or dusty environments. Its intelligent protection mechanism protects against overvoltage, overcurrent and phase imbalance, automatically disconnecting faulty capacitor modules to prevent cascading failures. Built-in temperature sensors and surge protectors further enhance reliability, making this low-voltage power capacitor suitable for mining, oil and gas and heavy industrial applications.
4. Smart monitoring and IoT connectivity
As a smart power capacitor, the device can be monitored in real time through an integrated HMI or remote SCADA system. Users can track key indicators such as harmonic levels, power factor (PF), capacitor health, and energy savings through a cloud platform. Its Internet of Things (IoT) design supports Modbus RTU, TCP/IP, and BACnet protocols, enabling predictive maintenance and seamless integration into smart grid architectures. Abnormal condition alarms (e.g., capacitor swelling, harmonic overload) ensure proactive power quality management.
5. Compact modular design, easy to install
Designed for flexibility, the BY82JS/480-25/P7 integrates anti-harmonic capacitors, reactors, and a control unit into a compact chassis. Its modular structure is easily expandable—users can add or remove 480V AC capacitor modules based on changing load requirements. Preconfigured wiring and plug-and-play functionality reduce installation time by 40%, while its low-voltage capacitor design complies with UL, CE, and IEC standards for global deployment.
6. Energy efficiency and sustainability
This smart capacitor device combines harmonic elimination with reactive power compensation to reduce CO2 emissions and comply with green energy initiatives. It reduces unwanted harmonic currents and minimizes line losses, thereby improving overall system efficiency. Smart energy-saving algorithms prioritize capacitor switching during peak demand hours, smoothing load profiles and extending the life of transformers and cables. It is ideal for commercial buildings, solar farms, and electric vehicle charging stations, ensuring continuous improvement in power quality.
Working Steps for BY82JS/480 - 25/P7 Anti - Harmonic Capacitors
BY82JS/480-25/P7 series is an advanced harmonic-resistant low-voltage power capacitor designed to improve power quality by solving harmonic distortion, reactive power shortage and voltage instability problems in 480V AC systems. The following are detailed operating steps of its integrated intelligent capacitor technology and harmonic elimination function:
1. Initialization and self-diagnosis
After power-up, the device performs an automatic self-test to verify the integrity of internal components, including the anti-harmonic capacitor module, integrated sensors, and communication interfaces. The intelligent control unit initializes parameters such as voltage thresholds (e.g. 480V ±10%), harmonic detection range (up to 50th), and reactive power compensation targets based on preset configurations or adaptive learning based on historical load data. The LCD display or remote interface provides real-time status updates, including capacitor health, ambient temperature, and harmonic levels.
2. Real-time harmonic monitoring and analysis
The device uses an embedded harmonic mitigation algorithm that continuously monitors grid conditions through high-precision voltage and current sensors. It is able to identify harmonic frequencies (e.g., 3rd, 5th, 7th) generated by non-linear loads such as inverters, rectifiers, or electric vehicle chargers. Smart anti-harmonic capacitors use adaptive filtering technology to suppress harmonic currents, reducing total harmonic distortion (THD) to less than 5% per the IEEE 519 standard. This prevents harmonic resonance and protects downstream equipment from overheating or failure.
3. Dynamic reactive power compensation
The 480V AC capacitor dynamically adjusts its compensation strategy based on real-time load fluctuations. When inductive loads (e.g., motors, transformers) cause a lagging power factor, the device activates its smart capacitor bank to inject leading reactive power to achieve a near-unity power factor (0.95–1.0). This minimizes grid losses, avoids utility fines, and stabilizes voltage levels. The system prioritizes zero-crossing switching to eliminate inrush current, extending the life of the capacitors.
4. Harmonic absorption and neutralization
Anti-harmonic power capacitors are equipped with 7% or 14% detuned reactors (selected according to the main harmonic frequency) to absorb and neutralize specific harmonic currents. For example, 7% reactors target 5th order harmonics, while 14% reactors target 3rd order harmonic distortion. This prevents harmonic amplification and reduces the risk of capacitor overheating or dielectric breakdown.
5. Thermal management and self-protection
The device implements intelligent thermal management through a ventilated housing, heat-resistant dielectric materials, and temperature sensors. If the internal temperature exceeds a safe threshold (e.g. >85°C), the system triggers a cooling fan or temporarily disconnects the capacitor module to prevent damage. Other safety measures include overvoltage/overcurrent protection, phase imbalance detection, and automatic fault isolation.
6. Data communication and remote control
Smart capacitors transmit operating data (e.g., harmonic spectrum, energy savings metrics, and capacitor health) to a centralized SCADA or cloud platform via IoT-enabled protocols (Modbus RTU, TCP/IP). Operators can remotely reconfigure compensation settings, schedule maintenance, or trigger firmware updates. An LCD interface provides local diagnostic access for rapid troubleshooting in environments such as industrial plants or data centers.
7. Energy efficiency optimization
The device combines harmonic elimination with reactive power compensation, reducing line losses and CO2 emissions. Its energy-saving algorithm prioritizes capacitor switching during peak demand hours, smoothing the load profile and extending the life of transformers and cables. Post-installation reports quantify the return on investment through metrics such as reduced kWh consumption and avoided harmonic-related outages.
Schematic Diagram of Product Wiring
Product-Related Size Information.
| Type | H(mm) | Capacity |
| BY82JS/480-25/P7 | 425 | 25kvar |
Manufacture High - Quality Products With Dedication
Edge computing and intelligent monitoring to enhance grid stability
The BY82JS/480-25/P7 leverages IoT edge computing technology, equipped with embedded sensors and a real-time data analytics platform to monitor voltage, current, temperature and harmonic distortion levels. This can enable predictive maintenance by detecting early signs of capacitor degradation or grid instability, thereby reducing downtime for critical infrastructure such as semiconductor manufacturing facilities and hospital power systems.The device’s adaptive algorithm optimizes the compensation strategy for three-phase unbalance correction, resolving voltage sags and swells within 20 milliseconds. Its IP67-rated housing, made of corrosion-resistant aluminum alloy, ensures reliable operation in harsh environments (-20°C to +70°C) while complying with UL 810 and IEC 60831-1 standards. Integration with cloud-based energy management systems enables remote configuration and firmware updates, making it a cornerstone of modern smart grid solutions.
Advanced anti-harmonic design, using high-quality reactors and intelligent control
BY82JS/480-25/P7 integrates a 7% tuned reactor that is optimized for fifth harmonic suppression, ensuring stable operation even in industrial environments with severe harmonic distortion. The reactor uses high-purity copper windings and a low-loss silicon steel core to significantly reduce eddy current losses and overheating risks even when operating continuously at 480V AC. This design prevents harmonic resonance and avoids grid harmonic amplification, which is critical for harmonic elimination in applications such as manufacturing plants, data centers, and renewable energy systems. The capacitor unit uses self-healing metallized polypropylene film technology to enhance durability and extend service life by automatically isolating defects caused by voltage surges. The unit works in conjunction with an intelligent microchip-controlled switching system to dynamically adjust reactive power compensation based on real-time load fluctuations, achieving power factor correction with ±1% accuracy. This hybrid design ensures compliance with the IEEE 519-2022 harmonic mitigation standard while reducing energy losses by up to 30% compared to traditional capacitors.
Modular and scalable architecture for flexible deployment
BY82JS/480-25/P7 features a modular plug-and-play design that allows seamless expansion from single-node installations to large-scale harmonic filtering networks. Each module is hot-swappable, minimizing maintenance disruptions in high-availability environments such as steel mills or port crane systems. The use of ultra-thin dielectric material reduces the physical size by 40% compared to traditional capacitors, making it ideal for space-constrained substations.In addition, a multi-stage protection system includes overvoltage, overcurrent and thermal overload protection, ensuring compliance with NEMA TS2 resilience standards. The capacitors’ anti-triboelectric noise shielding eliminates electromagnetic interference (EMI) from adjacent equipment, which is critical in delicate environments such as laboratories and telecommunication hubs. Combined with a 20-year service life, the design offers unparalleled cost-effectiveness in long-term harmonic management.
Storage Workshop
Production workshop
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.
Workshop Strength: Intelligent Production and Quality Control System
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Intelligent Production Equipment
The company's workshop is equipped with a modern mold center, technology R&D center, and intelligent digital testing equipment, enabling full-process automated management from raw material processing to finished product assembly. For example, the production line adopts advanced CNC machine tools and automated assembly systems to ensure product precision and consistency. -
Strict Quality Control
Having passed the ISO international quality management system certification, the workshop has established multiple quality inspection procedures, including harmonic testing, dielectric strength testing, and temperature rise testing, to ensure that each device complies with international standards. It is worth mentioning that the company's products have been used in key domestic and international projects for a long time, and their quality stability has been verified. -
Flexible Production Capacity
To meet the diverse needs of overseas customers, the workshop supports small-batch customization and rapid delivery. For example, it can adjust product parameters according to the grid standards of customers' countries (such as 60Hz in Europe and the US or 50Hz in the Middle East) and provide multi-language operation interfaces.
Global Market Layout
The company's products have been exported to more than ten countries in Europe, Southeast Asia, the Middle East, etc., covering scenarios such as factories, petrochemical plants, and solar power generation. By participating in international exhibitions (such as the Russia HVAC Exhibition) and matchmaking conferences organized by the Zhejiang Provincial Department of Commerce, the company directly reaches overseas buyers and showcases its technical solutions.
Business license
High-tech enterprise certificate
ISO management system certification
Corporate honors
Product certification certificate
Product testing report
Company patent certificate
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