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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/450-20+20 Series Low Voltage Self-healing power Intelligent Capacitor 450V
Capacitor Specifications
| Project | Parameters | |
| Type | BY89S/450-20+20 | |
| Compensation method | Three-phase co compensation | |
| Capacity of each group of capacitors（total capacity）（kvar） | 20-20 | |
| Standard Working Conditions | Working Environmental Temperature | -25℃~+55℃ |
| Operation Relative Moisture | 20%~90% at 40℃ | |
| Working Attitude | ≤2000m | |
| Power Supply | Voltage | AC250V |
| Voltage Fluctuation | ±20% | |
| Frequency of Working | 50±1.5Hz | |
| The Dissipation of Power | ≤3VA | |
| Measurement Precision | Voltage and Current | 0.5% |
| Power | 1.0% | |
| Energy Factor | ±0.01 | |
| Temperature | ±1℃ | |
| Protection Interval | Blocking Time | 5~60s |
| Capacitor Cutting Time | 1s | |
| Reactive power compensation | Maximum Number of Connected Devices | 31units with controller |
| 12units without controller | ||
| Electrical Safety Protection | 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 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 Indicator | 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 Naming Rules
What is intelligent capacitor
In today's power supply systems, the extensive use of power electronic devices and industrial motor equipment has brought serious reactive power and harmonic problems to the power grid. Intelligent capacitors, with advantages such as intelligent networking, human-machine interaction, intelligent measurement and control, and comprehensive protection functions, are gradually being applied in enterprise power supply systems. The following mainly provides a brief analysis of intelligent capacitors.
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Working Principle of Intelligent Capacitors
Intelligent capacitors collect the current and voltage signals of the three-phase low-voltage bus, calculate the corresponding power factor, capacitor switching capacity, and switching combination rules, and realize the functions of low-voltage compensation and harmonic filtering. Intelligent capacitors can connect multiple units into an intelligent reactive power compensation system through the RS485 communication interface without the need for an external controller. -
Classification of Intelligent Capacitors
Due to the different switching modules used, intelligent capacitors on the market can be divided into different types. One type is the intelligent capacitor that uses a composite switch as the switching module; the other is the one that uses a magnetic latching relay as the switching module. For intelligent capacitors, according to the low-voltage reactive power and harmonic load conditions in different scenarios, the connection methods can be divided into four types: three-phase reactive power simultaneous compensation, three-phase reactive power separate compensation, three-phase harmonic simultaneous compensation, and three-phase harmonic separate compensation. The BY89/450 series intelligent capacitor uses a composite switch as the switching module and the three-phase reactive power simultaneous compensation method. The composite switch consists of a thyristor switch and a magnetic latching switch connected in parallel. It has the advantages of zero-crossing switching of thyristors during the on and off instants and zero power consumption of magnetic latching switches during normal conduction. It completely solves the problems of large inrush current, easy contact welding of contactors, high energy consumption, high heat generation, and harmonic generation of thyristor non-contact switches; it ensures zero-crossing switching, no inrush current, no contact welding, low energy consumption, no heat generation, and no harmonic pollution; it realizes smooth switching of the capacitor bank, prolongs the service life, and improves power quality; at the same time, the switch design has functions such as phase loss protection, undervoltage protection, no-load protection, and self-diagnosis fault protection.
Intelligent Capacitor Three-phase co compensaion
Both three-phase simultaneous compensation and three-phase separate compensation are common methods used in power systems to improve the power factor of reactive power compensation. Although both are used for reactive power compensation, there are certain differences in practical applications. Only by reasonably selecting and applying capacitors can the power factor be truly improved and the efficiency of the power system be enhanced.
- In three-phase simultaneous compensation, capacitive loads are connected to the common node of the three-phase power system to jointly compensate for the reactive power demand of the entire system. Three-phase separate compensation refers to connecting capacitive loads to each phase of the three-phase power system respectively, so as to individually compensate for the reactive power demand of each phase.
- The main goal of simultaneous compensation is to make the power factor of the entire system close to the ideal value, thereby improving the power factor of the system. The main goal of separate compensation is to correct the power factor of each phase to ensure that the power factor of each phase is restored to the ideal value.
- The capacity of simultaneous compensation capacitors is usually relatively large to meet the power factor correction requirements of the entire system. Its control methods are generally automatic switching based on system requirements or manual switching based on preset capacitor combinations. Simultaneous compensation power capacitors are usually installed on the load side of the power system and can also be installed in parallel with the load.The following is the wiring diagram for three-phase simultaneous compensation.
Wiring diagram of switching indicator light and functions of RS485 indicator light
Intelligent Capacitor Size Chart
| Kind | W | W1 | L1 | L | H |
| BY89S/450-20+20 | 80mm | 50mm | 20mm | 365mm | 290mm |
Disassembly diagram of intelligent capacitor
Digital Screen - Real-Time Monitoring and Diagnostics A digital LCD screen built into Instant Data Access reveals current vital parameters: voltage, current, power factor, and harmonic distortion (THDi), thus allowing quick evaluation of the performance. Fault Alerts - Alerts operators via visual and audible means of faults such as overvoltage, overheating, or capacitor failure, thereby contributing to less downtime. User-friendly interface with easy navigation for configuration and troubleshooting of equipment by any user regardless of technical ability.
High-Performing Terminal Blocks - Having Reliable Connectivity Among supporting secure connections offered by these corrosion-resistant copper-aluminum alloy terminals, low-contact resistance and heat dissipation are maintained, even under high loads of current . Plug-and-play Installation: Screw or spring-type terminals support rapid, tool-free installation that cuts the time for installation by 50%. Wide Compatibility-wires from 4mm² to 35mm² are accommodated, being suitable for all industrial and renewable energy setup.
Flame Retardant Plastic Enclosure-Completely Safe Fire Resistance: The enclosure will self-extinguish in 10 seconds, thereby eliminating fire hazards in fault or extreme temperature conditions. Environmental Durability: Resistant to UV, chemicals, and moisture; suitable in highly aggressive environments, such as oil refineries, coastal area attractions, and outdoor solar farms. Lightweight and Compact: Being 40% lighter than standard metal enclosures allows for ease of handling and installation, guarding against impact.
Application scenarios
Power Grid Industrial Equipment
Charging Piles Urban Infrastructure Construction
Storage Workshop
At Baoyu Holding Technology Co., Ltd., an advanced automated storage system has been implemented in the product storage workshop, along with temperature and humidity control. This combination enables three-dimensional shelving, allowing for high-density and secure storage of product units, resulting in a 200% increase in storage capacity. Additionally, the workshop is equipped with specialized testing equipment, integrates fire alarm systems, and incorporates anti-dust and anti-static measures, ensuring zero oxidation and zero product loss. To maintain parameter consistency, samples are collected on a monthly basis.
Production workshop
The main manufacturing facility for Baoyu’s products is dedicated to precision production within a controlled cleanroom environment, illuminated by a combination of constant artificial and natural light. This setup fosters an optimal working atmosphere across all areas of the facility. Each section of the workspace is meticulously designed to enhance a smooth and efficient production flow. Cross-trained technicians are readily available to swiftly tackle any unexpected challenges that may arise during the manufacturing process. By strictly following established protocols and ensuring total collaboration among all functions, the facility has achieved a higher throughput rate while maintaining rigorous quality standards. Automated assembly lines are equipped with in-process quality control systems that verify dimensional and electrical compliance for every batch produced. Adherence to ISO standards ensures conformity with global industrial benchmarks. With a near-zero defect rate in the workshop, the facility guarantees long product life and tailored solutions that meet customer specifications through the strategic use of advanced automation and data analytics. This commitment to operational excellence has established the facility as a preferred partner in 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
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