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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 Seriers Highly Integrated Three-phase Low Voltage Intelligent Capacitor 3Phase Series Smart Capacitor In Power System
Technical specifications of capacitors
| Project | Parameters | |
| Type | BY89S/450-40+40 | |
| Compensation method | Three-phase co compensation | |
| Capacity of each group of capacitors(total capacity)(kvar) | 40-40 | |
| Environment Conditions | Temperature | |
| Relative Moisture Conditions | 20%~90% at 40℃ | |
| Attitude | ≤2000m | |
| Power Supply for Working | Specified Voltage | AC250V |
| The Discrepancy of Voltage | ±20% | |
| Operating Frequency | 50±1.5Hz | |
| Power Dissipation | ≤3VA | |
| Measurement Precision | Current and Voltage | 0.5% |
| Power | 1.0% | |
| Energy factor | ±0.01 | |
| Temperature | ±1℃ | |
| Safety Mechanism Time | Blocking Time | 5~60s |
| Capacitor cutting time | 1s | |
| Reactive power compensation | Maximum Quantity of Linked Capacitors | 31units with controller |
| 12units without controller | ||
| Electrical Safety | Insulation Resistance of Main Circuit | Test voltage 2500V(1min) |
| Protection circuit continuity | All earthing components are required to have a secure electrical connection with the grounding screw | |
| Security protection | 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 | |
|
The level of protection |
IP30 | |
| The protection of Sampling and control circuit | The current circuit for built-in sampling control in the device utilizes dedicated wiring components, with a reliable ground connection at one end | |
Capacitor Naming Rules

Intelligent Capacitor Product Introduction
The smart low-voltage capacitor provides power management entirely, and its highly integrated design enhances performance and reliability. This smart capacitor integrates the latest reactive power compensation technology with a capacitance range of 450V 80kvar, which is perfectly suited for the reactive power compensation function. The smart capacitor optimizes the power factor and reduces power loss for the users.
- Temperature working conditions cover a wide range: The operating conditions of this capacitor can withstand surface temperature ranging from -25°C to +55°C, which enables it to withstand various environmental conditions and is also suited for a wide range of industrial environments.
- Good Materials and Construction: This capacitor is manufactured with high-grade materials and surface-mount packaging-type construction to ensure outstanding performance and reliability under arduous industrial applications.
- Custom and reliable: Being a highly customizable product, our capacitor can be designed to meet user specifications (e.g., voltage and capacitance), which will therefore warrant reliable performance and efficiency in power management solutions.
The smart capacitor enhances power system efficiency while giving the user a variety of flexible choices adapted to different industrial needs.

Working principle and structural diagram of capacitors
The intelligent capacitor (Capacitor Can) stores Capacitor Energy through its internal metallized film dielectric, dynamically compensating for reactive power in AC systems. When inductive loads cause a phase lag in the Power Current, the capacitor releases stored energy to offset the lagging current, driving the power factor of Power To Grid close to unity, thereby reducing line losses. Integrated with Frequency Variator systems, its embedded microprocessor monitors grid frequency and harmonic distortion in real-time, intelligently switching capacitor banks to stabilize voltage fluctuations and suppress high-frequency interference generated by inverters. This ensures efficient and clean energy feedback to the grid, enhancing overall system stability and efficiency.

The difference between three - phase shunt compensation and three - phase series compensation of capacitors
Split compensation for a three-phase system means that capacitors are installed on each phase independently to compensate for the reactive power of each phase. This method possesses high flexibility and can subsequently be adjusted according to actual load conditions on each phase, effectively balancing the three-phase load and diminishing the effect of any phase imbalance. Besides, the design of the three-phase split compensation allows the capacitors in any phase to function normally if a capacitor in one phase fails, thus preserving the system's stability. This method of compensation is most relevant for situations with highly pronounced load imbalance or where a very precise control on reactive power in each phase is required.
Three-phase co-compensation means one or more capacitors are used in a three-phase system to jointly compensate for the reactive power of all phases. This allows for relatively easy design and installation, as it requires fewer capacitors and, in most cases, lower equipment and installation costs. It applies to situations where loads are relatively balanced. However, three-phase co-compensation may not be effective in compensating for reactive power in every phase in case of unbalanced loads, rendering power factors of some phases low. Besides, in case of capacitor failure in co-compensation, it may affect the entire system's reactance compensation effect. So the environment suitable for three-phase co-compensation is where reactive power compensation requirements are not too demanding.The following figure shows the terminal arrangement for three-phase common compensation.

Capacitor size information

| Type | L1 | L | H | W | S |
| BY89S/450-40+40 | 365mm | 385mm | 410mm | 80mm | 50mm |
Our Advantages


Flexibility for Different Applications: The intelligent low-voltage reactive power compensation system is designed for versatile applications and thus lends itself to many kinds of applications. This system can efficiently compensate among low-voltage range reactive power and manage voltage rises once again to ensure that harmonic content in the grid is kept in check with the permissible standards. The versatility of this system allows it to adapt to diversified applications in industrial and commercial installing environments following the specific power quality needs.

Compact and Efficient Design: This intelligent low-voltage reactive power compensation system has a compact structure that is easy to install and integrate into existing electrical systems. Easy steps for manufacturing enable good production efficiency and lesser lead and costs.


Electric power system Electric vehicle charging pile Urban infrastructure
Storage Workshop
Baoyu Holdings Technology Co., Ltd. has adopted an automated warehousing system and constant temperature and relative humidity regulation for its capacitor storage workshop. Combined with a three-dimensional shelving system, this construction is high-density and safe storage for capacitor units with an increase in storage capacity of 200%. The workshop is equipped with professional inspection, fire alarm linkage, and dust and static electricity prevention facilities to ensure zero oxidation and zero loss of products. The monthly parameters are taken for sampling to guarantee stable performance.

Production workshop
This is the principal manufacturing facility for the capacitors, which makes precise manufacturing the prime parameter within a sterile and illuminated environment, consequently providing enough seamless operational environment. Each piece of the workspace is optimally planned and designed to create a smooth high-yield production flow. An assembly team of multi-skilled technicians is trained for resolving unexpected complexities in manufacturing within the shortest time possible. With immaculate observance of the standard procedures in place and complete cooperation among various functions, the facility has an increased throughput rate while meeting stringent quality requirements. Automated assembly lines operate with real-time quality control systems, verifying the dimensional and electrical compliance of all batches. This harmonizes result with requirements of ISO in tune with the world industrial requirements. Almost-zero defect rates in the workshop ensure long product lifetimes and tailored solutions tailored to the customer's needs because of advanced automation and data analytics. Operational excellence makes the facility a preferred partner for mission-critical power solutions around the globe.

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Product testing report

Company patent certificate

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