BY89H/450-40+250-20 Series Intelligent Reactive Compensation Device Fully Automatic Low Voltage Power Capacitor 450V

Model Meaning

Product Parameters

Protection introduction

Designated as an innovation in low-voltage reactive power compensation toward 0.4 kV power grids, the BY89 Series Intelligent Capacitors are one of their kind. As such, these integrated devices combine the best of technology with a small modular design for high performance, efficiency, and reliability.

• Core Components

Intelligent Measurement & Control Module: Real-time monitoring and adaptive compensation for precise power factor correction.

Zero-Crossing Switching Module: Eliminates inrush currents, thus increasing the lifespan of the connected equipment.

System Protection Module: Protects against overvoltage, undervoltage, and overtemperature conditions.

Network Communication Module: Provides remote monitoring and control capability through the IoT.

Human-Machine Dialogue Module: User-friendly interface for configuration and diagnostics.

Low-Voltage Self-Healing Power Capacitance: This may work in either Δ+Δ, Δ+Y, or Y+Y configurations to fit flexible compensation requirements.

• Key Features:

Molded Case Circuit Breaker: Provides a 15kA breaking capacity for improved safety.

Flexible Compensation Methods: Supports centralized and decentralized compensations adaptable to different load profiles.

Compact Design: Downsizing by 50% compared to traditional systems, thus saving space and installation costs.

Energy Efficiency: With low power consumption and high reliability, they guarantee energy savings of 20-30%.

Advantages Over Traditional Systems:

Revolutionary Integration: System eliminates outdated setups involving discrete components, such as fuses, contactors, and thermal relays, making it easier for installation and maintenance.

Performance Enhancement: Provides better compensation effects, longer service life, and higher reliability, in line with the stringent requirements of modern power grids.

Economical: It reduces operational and maintenance costs while ensuring grid stability and energy efficiency.

• Certifications:

DL/T 842-2003, GB/T 22582-2008, GB/T 15576-2008

Differences between Self-healing Low-voltage Capacitors and Smart Capacitors

Self-healing low-voltage capacitors provide reactive power compensation in power systems for inductive loads, thereby improving power factor, increasing voltage quality, and decreasing line losses. Their self-healing ability allows the capacitor to self-recover its insulation property upon partial breakdown so that the functionality and reliability of the equipment is enhanced. These capacitors are compact and easy to install and maintain, making them popular in low-voltage distribution systems. Smart capacitors are reactive power compensation equipment with advanced features. They are designed with sophisticated technologies such as measuring and controlling units, thyristor composite switching units, and protection units to accurately and rapidly compensate for the reactive power in an electric system. Typically smaller and lighter, smart capacitors manage reactive power compensation independently. They can rectify the limitations of existing technology, thus enhancing power systems stability and efficiency.

• Function and Application: The self-healing low-voltage capacitors are mostly oriented towards self-healing ability and primary reactive power compensation functions, whereas the smart capacitors are in fact mainly about achieving accurate and rapid reactive power compensation by virtue of advanced measuring and controlling technologies and switching units.
• Structure and Design: Self-healing low-voltage capacitors usually consist of comparatively less complex structure which comprises cores-housings-terminal structures, while smart capacitors incorporate measuring and controlling units and thyristor composite switches thereby forming a rather complex design.
• Performance and Reliability:Self-healing low-voltage capacitors' enhance the reliability of the equipment on account of their self-healing ability; 'smart capacitors', on the other hand, enhance the stability and efficiency of the power system with their precise measuring, controlling, and switching technologies.

Product size diagram

Capacitor wiring diagram

In what situations is it necessary to have intelligent capacitors

Industry applications with fluctuating loads: In a factory setting such as machining workshops and textile mills, the working states of equipment fluctuate often. Smart capacitors can detect the changes in a power factor of the power grid and provide automatic reactive power compensation as per load dynamic changes. This ensures that the power factor is always at reasonable levels, thereby minimizing reactive current flow in the power grid, thus improving power supply efficiency.

Harmonic disturbance power systems: In areas with significant nonlinear loads-for instance, variable speed drive applications-the smart capacitor can detect harmonics and apply specific solutions. Some smart capacitors also have filter functions and can effectively suppress harmonics so they do not damage any other electrical equipment.

Places with critical power quality requirements: Data centers, hospitals, etc., have extremely high voltage stability and power quality requirements. Smart capacitors can monitor and control power grid parameters in real time, provide high-precision reactive power compensation to stabilize the voltage, thereby ensuring the quality of the power supply. 

Large commercial buildings and complexes: For instance, shopping malls can use smart capacitors for the centralized control and reactive power compensation of the entire mall power grid. Improvements in power factor, energy savings, load optimization, and therefore energy efficiency.