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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
BY71 0.45-10-3 Series Three-Phase Cylindrical Low-Voltage Power Capacitor
Model meaning
Capacitor Main Technical Parameters
| Model | BY71 0.45-10-3 | |
| Rated voltage | 450V | |
| Capacity | 157.3μF | |
| Rated Current | 12.8A | |
| Loss angle tangent value | Not exceed 0.0012 at rated power frequency voltagev | |
| Capacitance deviation | The difference between the measured value and rated value of the capacitor shall not exceed 0~+10%， and the ratio of the maximum to minimum capacitance measured between any two line terminals in a three-phase capacitor shall beyond 1.08 | |
| Withstand voltage test | Interpolar | Power frequency 2.15Un, 2S |
| Polar shell | Rated voltage of 600V and below, applied voltage of 3.6kV, 5S | |
| Rated voltage of 600V and below, applied voltage of 7.2kV, 5S | ||
| Maximum allowable overvoltage | 1.1Un, not exceeding 8h every 24h | |
| Self discharge function | The capacitor is equipped with a discharge device， which can reduce the remaining voltage of the capacitor from 2Un to 75V or below within 3 minutes of disconnecting the power supply | |
| Meeting standards | IEC60831-2017,GB/T12747-2014 | |
BY71 0.45-10-3 cylindrical capacitor introduction
The BY71 0.45-10-3 cylindrical capacitor is a linear-structured power capacitor, consisting of several cylinders connected to each other, which in turn comprise many annular capacitors. They are commonly used in supplying power to systems, and other devices will serve as filters in AC and DC grids when so required. They apply to power electronic systems to improve voltage and frequency conversion rates.
This BY71 0.45-10-3 cylindrical capacitor avails many advantages such as miniature size, light weight, stable electrical characteristics, high reliability, low resistance, high overall performance and cost-effectiveness, plus other elements. Its casings are either aluminum or steel, color customizable to requirements. Standard sizes are at 4.5, 6, 7, and 8 inches. The size range of cylindrical capacitors is very broad, from 4.5 inches to 24 inches, thus making them fit different power systems.More, although, by the BY71 0.45-10-3 cylindrical capacitor, there would be perfect capabilities concerning capacitance and voltage withstands that may resist higher voltages to improve reliability. They can be used in some special environments, for instance, very harsh conditions, such as strong magnetic fields, humidity and pollution, and even low temperatures. However, the only thing to be in their favor is the special protection used in power systems.Further, the BY71 0.45-10-3 cylindrical capacitor performs excellently in reducing electromagnetic interference. It can also keep high-frequency pulses and prevent electromagnetic wave propagation while allowing current to flow continuously. Therefore, it becomes very effective in being used as a filter-the cylinders resist external disturbances very well and create a more stable system while reducing noisiness.
The main feature of BY71 0.45-10-3 cylindrical capacitor
It is an innovative cylindrical self-healing environmental protection explosion-proof capacitor, which uses self-healing advanced metallized polypropylene film(MKP) technology to ensure that the winding has excellent accuracy.
- Gas is used to replace traditional oil and resin dielectrics, and dry technology is used to achieve higher requirements for environmental safety and volume miniaturization of capacitors.
- Long-term vacuum drying technology is applied to ensure the working stability of the capacitor.
- The portable assembly method and good heat dissipation performance not only improve harmonic hazard and correct power factor, but also ensure greater saving of installation space.
- This high-end oxidation treated aluminum shell comes with an elegant circular shape, which not only makes it appealingly attractive but also enhances the convenience of various installation settings. Its compact form gives the smallest duty cycle, making it effective for applications bearing limited spaces.
- Such innovative design is specifically developed to endure high ambient temperatures and substantially fluctuating voltage environments. Such changes guarantee that the performance remains consistent, regardless of the above-mentioned disadvantages, within an industrial to commercial realm of applicability.
- The unit comprises the internal discharge resistor, which acts as a sound safety device. It will separate the capacitor from the source in case of increase of internal pressure or any other fault in operation. This measure prevents possible accidents and such other inherent risks from getting exposed to the equipment and the environment.
- Thus impressive, this product combines high technical skills with practical safety features, making it a reliable choice for users evaluating high performance and peace of mind in their electrical systems.
Cylindrical Capacitor Structure
Miniaturization
- Cylindrical design, small size. By using new technology and process,the capacitor features small volume, lightweight, and low height, satisfying people's requirements for three-dimensional space,and bringing greater economic benefits to users. Because the gas is filled inside, the capacitor can be placed vertically or horizontally, which is convenient for installation.
Gas-filled Capacitor
Gas-filled Capacitor
- The capacitor is internally filled with nitrogen(N2),an environmentally friendly insulating gas. The gas density is similar to atmospheric pressure,and no pressure is generated by itself. The operation is safe and reliable. The gas filled inside the capacitor reduces the dielectric loss of capacitor, the capacitor itself does not heat during operation,which improves the reliability of operation. The inside of the capacitor unit is connected by a triangle,and sealed in a cylindrical aluminum shell through gas(N2)technology. MKP capacitor is a new generation of dry environmental protection self-healing gascapacitor.
MKP Technology
- The interior is divided into three MKP windings. Its current-carrying metal layer(electrode)is deposited on the side of the film by vaporization. The electrode is connected by the metal layer sputtered in front of the winding unit.The metal coating (main compositions are zinc and aluminum)under high vacuum and the edge strengthening technology of additional connection point sand cross-sectional coatings plays an important role in suppressing large current sand ensuring stability of the capacitor, and has very superior self-healing properties.Thick edges and special film cutting technology(optimized combination corrugation and smooth cutting) can produce the largest effective surface for metal spraying or bonding treatment (winding design), which means that the capacitor has high surge current suppression ability.in addition, the edge contact problem caused by edge contraction effect of winding film can also be fully resolved.
Safety Explosion-proof
- The capacitors are filled with environmentally friendly insulating gas instead of liquid, epoxy and paraffin, so there is no risk of fire caused by oil injection or oil leakage,which plays relevant role and guarantees the ecological environment. Gas is used as the internal medium of capacitor to achieve a true dry effect. Meanwhile, the capacitor has an over-voltage separation protection device to ensure that the capacitor is explosion-proof.
Product size detail
| Model | M | H | Installation sole |
| BY71 0.45-10-3 | 76mm | 245mm | M12×17mm |
Why choosing Baoyu？
Cylindrical capacitors accept a high voltage imported film. This film can bear high voltages, thus ensuring the stability and reliability of the capacitor under extreme working conditions. The insulation of this film against high voltage is very high and it, therefore, prevents leakage of current making it more efficient and durable. Also, imported films are normally found to have better heat stability and anti-aging properties, so they perform excellently even in high temperatures and very rough environments, thus increasing reduction of maintenance costs and failure risks. In short, a high-voltage-resistant imported film for cylindrical capacitors only increases the safety and reliability of the product but also improves its adaptation in various application scenarios.
The cylindrical capacitor has a shell made of high-anodized aluminum material. Anodization treatment improves the capability of this aluminum material in terms of corrosion and wear. This translates directly into increased service life of the capacitor, which can operate for a longer time without degradation, stability, and reliability under different environmental conditions. This aluminum shell is also not very heavy and provides good heat dissipation, helping maintain good capacitor performance under high-temperature conditions. Apart from, excellent anodization treatment also beautifies the product in terms of appearance texture, satisfying modern industrial design aesthetics. In the end, the good electrical conductivity and mechanical strength of aluminum material define performances of the capacitor concerning electrical performance and structural stability, thereby improving its adaptability in many diverse applications.
Adopting automated gold spraying technology: It can give high-precision metal coatings to components in a uniform way. Hence the capacitor surface develops excellent conductivity and corrosion resistance, improving the overall performance and reliability of the capacitor. The process of automated gold spraying increases production efficiency and reduces time and cost of labor cost operations, achieving shortening of the production cycle. Further, precise control of gold spraying technology will reduce wastages in material, thus lowering productions cost while at the same improving product consistency and stability, thereby effecting a reduction in the rate of defects.
Application scenarios of cylindrical capacitors
Electric power system Renewable energy system Charging pile
Storage Workshop
Production workshop
Workshop Vedio
Who we are
BaoYu Holding Co., Ltd. is an intelligent power equipment manufacturer globally at the forefront in its field. It engages in research, development, and manufacture of products like cylindrical power capacitors, active power filters (APF), reactors, and reactive power compensation systems. Industries that use the products include industrial manufacturing, new energy power generation, data centers, and rail transit. By placing emphasis on technological innovation, the company has provided efficient and reliable power optimization solution applications for more than 40 countries and regions worldwide, using intelligent production workshops and digital warehousing systems, with coverage across the European, North American, Southeast Asian, and Middle Eastern markets.
Intelligent Production Workshops
With incorporation of automation, digitalization, and sustainable concepts, BaoYu builds its production workshop around the Industrial 4.0 standard.
Automatic Production Lines.Enables the high-speed SMT machines, laser welding robots, and AI vision inspection technologies to reach a mere ±0.1mm accuracy in encapsulation and a product consistency rate of as high as 99.98%.
Rigorous Quality Verification
• 72-hour aging test: A test that simulates temperature extremes -40°C to +85°C environments for detection of early failures and has achieved an MTBF of over 100,000 hours.
• Whole Parameters Detection: All values of capacitance, equivalent series resistance (ESR), and leakage current are monitored online to conclude whether the capacitor meets the request from IEC standards.Zero-carbon Factory practice
Intelligent Warehousing Workshop
- Efficient Storage and Zero-loss Management:The BaoYu warehouse is highly intelligent and proves valuable not to all raw materials during production activities but also throughout the entire cycle up to delivery:
- Constant Temperature and Humidity Environment:The temperature is controlled within ±1°C (15 - 25°C), and the humidity is maintained at 40% - 60% to prevent the drying of the electrolyte in capacitors and metal oxidation.
- Anti-static Measures:Using both anti-static epoxy floor and ion air curtains to dampen the adsorption of dust and damage due to electrostatic accumulation.
- Automated Stereoscopic Warehousing:The storage capacity of 3D high-density shelves shall increase by 200%, supporting the management of millions of capacitor units.
- RFID Electronic Labels:Batch traceability is made possible, and order picking efficiency is improved by 55%. Globally delivered in less than 48 hours.
- Safety Redundancy Design:Heptafluoropropane fire suppression system**: A deposit-free gas fire extinguishing system to fire accidents, creating second-level response via sensors of heat and smoke. Inspection Mechanism Monthly: A sampling team tests capacitance attenuation rates by sampling from a factory: ≤ ±3% ensuring that factory pass rates are ≥99.9%.
Core Advantages and Industry Benchmarks
Technology Leader
• Series superposition of capillary lengths making the cylindrical type capacitors fit for high-power frequency converters and energy storage applications.
• The APF series offers dynamic harmonic filtering from the 2nd to the 50th order (THDi < 3%) and compatible with photovoltaic inverters and electric vehicle chargers.
Successful Cases
• Provided a capacitor compensation solution for a car factory in Europe and saved more than 2 million euros in annual electricity cost.
• Assisted a 5 GW photovoltaic power station in the Middle East by enabling harmonic governance to improve grid connection efficiency by 18%.
Our Mission and Vision
"Intelligently creating electric energy, greenly driving the future" is the vision of BaoYu. It aims to lead high-efficiency, low-carbon change for power systems, cost-effective and risk-free power quality solutions for global industrial and energy customers, and continue to lead the core strength of "Made in China" in energy transformation globally.
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