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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
BY89S/450-30+20 Intelligent Combined Low Voltage Power Capacitor Compensation Device Intelligent Power Capacitor Three Phase Compensation 450V 50kvar (30+20kvar)
Intelligent Capacitor Specifications
| Project | Parameters | |
| Type | BY89S/450-30+20 | |
| Compensation method | Three-phase co compensation | |
| Capacity of each group of capacitors（total capacity）（kvar） | 30-20 | |
| Operation Terms | Operation Temperature | -25℃~+55℃ |
| Relative Moisture | 20%~90% at 40℃ | |
| Attitude | ≤2000m | |
| Working Power Supply | Operation Voltage | AC250V |
| The Fluctuation of Voltage | ±20% | |
| Frequency of Working | 50±1.5Hz | |
| Power Dissipation | ≤3VA | |
| Precision of Measurement | Voltage and Current | 0.5% |
| Power | 1.0% | |
| Energy Factor | ±0.01 | |
| Temperature | ±1℃ | |
| Protection Time | Time of Blocking | 5~60s |
| Capacitor Cutting Time | 1s | |
| Reactive power compensation | Maximum Number of Connected Devices | 31units with controller |
| 12units without controller | ||
| Electrical Security condition | Insulation Resistance of Main Circuit | Test voltage 2500V(1min) |
| Protection circuit continuity | All of earthing components are required to have a secure electrical connection with the grounding screw | |
| Safety Protection Measures | The device’s casing, any metal components that could be energized, and the metal base of electrical elements that require grounding should be reliably electrically connected to the grounding screw | |
| Protection level | IP30 | |
| Sampling and control circuit protection | The current circuit for built-in sampling control in the device utilizes dedicated wiring components, with a reliable ground connection at one end | |
Model Meaning
Functions of intelligent capacitors
Filter Function
It can effectively suppress high-order harmonics and inrush currents, forming a low-impedance path for high-order harmonics. It has the function of absorbing and discharging harmonics, eliminating the impact of high-order harmonics on capacitors, protecting the circuit and preventing capacitors from overload, and preventing capacitor overheating and insulation medium aging. When the self-healing performance decreases and the service life shortens, there is no inrush No-Inrush Current Switching Function
Cooperate with a dedicated capacitor switching switch to achieve no inrush current during switching.
Phase-by-Phase Compensation Function
For phase-by-phase compensation products, each phase capacitor can be switched on and off separately, improving the accuracy of reactive power compensation and effectively compensating for three-phase reactive power imbalance.
Measurement Function
Measure distribution voltage, current, reactive power, and power factor; automatically measure CT phase and ratio and correct the three-phase current of each capacitor; measure the internal temperature of the capacitor.
Protection Function
Circuit current quick-break and overcurrent protection; capacitor overvoltage, undervoltage protection; capacitor overtemperature, phase loss, and three-phase imbalance protection. When the capacitor temperature exceeds 65°C, the capacitor will shut down for protection, improving service life and ensuring the safe operation of the system.
Signal Function
Signals for capacitor switching status, over/under compensation status, and over/undervoltage status; signals for protection action type and self-diagnosis fault type.
Communication Function
The capacitor and the controller are connected via RS-485 communication, facilitating the uploading of a large amount of sampling data and information exchange with external monitoring terminals to form a system for operation.
Interconnection Function
It has wired network communication and wireless network communication functions.
Intelligent network control. It can automatically detect and track the changes of system reactive power and automatically switch capacitor banks on and off. Capacitors with the same capacity are switched on and off in a circulating manner.
Differences between intelligent capacitors and ordinary capacitors
- First, intelligent capacitors use the most advanced switching devices, with no switching surge.
- Second, intelligent capacitors can perform overvoltage and undervoltage protection; protection against capacitor overtemperature, phase failure, and three-phase imbalance. When the capacitor temperature exceeds 65 degrees Celsius, the capacitor will shut down for protection during operation, improving its service life and effectively ensuring the safe operation of the system. At the same time, the intelligent control components of intelligent capacitors can self-diagnose various operating parameters of the capacitor itself. Once a self-check failure occurs, the whole unit will quickly respond and shut down.
- Third, intelligent capacitors can effectively suppress high-order harmonics and surge currents, eliminating the impact of harmonics on intelligent capacitors, protecting the circuit and preventing capacitor overload, thus preventing capacitor overheating, aging of the insulation medium, a decline in self-healing performance, and a reduction in service life.
Intelligent capacitor wiring method
Product size diagram
| Type | W1 | W | L | H | The interval between each machine |
| BY89S/450-30+20 | 80mm | 50mm | 385mm | 350mm | 50mm |
Storage Workshop
At Baoyu Holding Technology Co., Ltd., the capacitor storage facility employs an automated warehousing system paired with precision climate control technology, enabling multi-tier racking solutions for ultra-compact and secure capacitor unit preservation. This innovation triples the original storage capacity while maintaining stringent quality standards.The facility is further equipped with dedicated diagnostic instruments, integrated fire detection and suppression systems, and advanced dustproof/static-resistant safeguards, effectively preventing oxidation and product degradation. To validate operational consistency, routine monthly sampling and parameter verification protocols are rigorously implemented.
Production workshop
This primary manufacturing facility for capacitors focuses all efforts on precise production within a cleanroom environment, illuminated by constant artificial and natural light. This creates an optimal working atmosphere in every section of the building. Each area of the workspace is organized and designed to enhance a smooth and high-yield production flow. Cross-trained technicians promptly tackle unexpected challenges in the manufacturing process. By strictly following established protocols and with complete collaboration among all functions, the facility has achieved a higher throughput rate while maintaining stringent quality standards. Automated assembly lines are equipped with in-process quality control systems that verify dimensional and electrical compliance for every batch. Adherence to ISO standards ensures conformity with global industrial benchmarks. With near-zero defect accountability in the workshop, the facility guarantees extended product life and tailored solutions that meet customer needs through the rigorous application of advanced automation and data analytics. Operational excellence has earned the facility recognition as the preferred partner in mission-critical power solutions worldwide.
Business license
High-tech enterprise certificate
ISO management system certification
Corporate honors
Product certification certificate
Product testing report
Company patent certificate
Well-known domestic partners
Why choose our intelligent capacitor
The terminal blocks have multiple advantages. Firstly, they are convenient to install. With a plug-in or screw fixation design, they support rapid wiring and do not require professional tools. The installation time can be reduced by more than 50%, making them especially suitable for the transformation of high-density distribution cabinets. Secondly, the low contact resistance design effectively avoids the risks of local overheating or arcing caused by poor contact. Meanwhile, the high compatibility allows for the connection of various wire diameters, being adaptable to copper or aluminum cables and meeting the needs of different scenarios. In addition, the safety isolation design effectively prevents creeping discharge and short circuits, making it applicable to industrial power grids and distributed photovoltaic systems that require frequent maintenance.
The advantages of flame-retardant plastic shells are mainly reflected in fire safety and environmental tolerance. The use of advanced flame-retardant materials effectively prevents the spread of fire and ensures the safety of equipment. The shell has good high temperature resistance, which can avoid deformation or cracking caused by temperature changes. It also has chemical corrosion resistance and is suitable for harsh environments such as chemical plants and coastal areas. The double insulation design effectively prevents the risk of leakage. Compared with metal shells, the weight is reduced by 40%, and the impact resistance is significantly improved, which is suitable for use in vibration environments, such as mining machinery.
The gold spraying process significantly enhances the conductivity of capacitor electrodes and reduces contact resistance by 30%, thereby improving the transmission efficiency of high-frequency current. At the same time, the gold spraying layer has excellent corrosion resistance, can effectively isolate oxygen and moisture, avoid electrode oxidation, and extend the service life, especially suitable for salt spray and humid environments. In addition, the gold spraying process combined with the metallized film can quickly vaporize and isolate defects in the event of local breakdown, improve the success rate of self-healing, and ensure the reliability of the capacitor.
Some typical use scenarios
Power grid Charging pile
Photovoltaic High-speed rail