BY89S/450 Series High Quality Low Voltage 3 Phase Automatical Control Intelligent 60 KVAR Power Smart Capacitor 450V

Main parameters

Model Naming Rules

 How BY89S/450 Smart Capacitor works:

The BY89S/450 Intelligent Capacitor is a cutting-edge, self-healing power capacitor designed for 0.4kV low-voltage grids, delivering precision reactive power compensation to optimize energy efficiency, stabilize voltage, and improve power factor (up to 0.95+). This modular compensation unit integrates four core components:

CPU Measurement & Control Module:

• Continuously monitors grid parameters (voltage, current, power factor) and dynamically adjusts compensation via advanced algorithms, ensuring real-time power factor correction and harmonic suppression (up to 50th order).

Capacitor Switching Composite Switch:

• Utilizes thyristor-based switching technology for instantaneous, arc-free capacitor bank engagement, achieving ≤20ms response time and extending switch lifespan to 100,000+ operations.

Self-Healing Power Capacitor (Δ/Y Configurable):

• Features metalized polypropylene film with self-repairing capability, automatically isolating defects to prevent failures. Supports flexible Δ+Δ or Δ+Y configurations for diverse load demands.

Integrated Protection System:

• Built-in overvoltage, undervoltage, overtemperature, and short-circuit safeguards, coupled with a 15kA breaking capacity molded case circuit breaker, ensuring fail-safe operation under extreme conditions.

Components of Power Capacitors

Intelligent Power capacitor is one of the electronic devices used to store electric energy in an electric field. It is typically associated with improved system efficiency as well as the power factor of electrical systems. The major power capacitor components include:

Capacitor element
This is the basic component of the power capacitor. The capacitor is typically made out of metalized film or ceramic dielectric material and is responsible for storing the electrical energy.

Dielectric
This is the material used to separate two conductive plates between each of them. This provides the insulating barrier. The choice of dielectric is also most critical because it affects the performance and life of the capacitor.

Conductive plates
The dielectric material lies between the two conductive plates, and the capacitance of the capacitor depends on the area of the plates, the distance between them, and the type of dielectric used.

Terminal connections 
These are the points of the capacitor where the electrical system connects part of the capacitor. They are constructed by different materials, for example, copper, brass, or aluminum and may be built to withstand high currents and electrical stress.

Enclosure
Enclosure, which is made of metal or plastic, will cover the capacitor element, and it also keeps the capacitor element from outside like moisture, dust as well as temperature. This is for providing enough insulation and cooling.

Discharge resistors
These resistors are connected in parallel with the capacitor and help in discharging the residual charge present in the capacitor when it is disconnected from the electrical system, thereby preventing electrical shock hazards.

Overvoltage Protection 
Power capacitors are subject to overvoltage according to electrical transients or surge conditions. In this case, overvoltage protection devices (surge arrestors and fuses) serve to protect the capacitors from damage due to overvoltage.

Three-phase simultaneous compensation wiring method

Size Table of Intelligent Capacitors

Maintenance of Power Capacitors 

Power capacitors have various applications in electrical and electronic equipment for the storage of electrical energy and filtering of harmonic frequencies. The maintenance of power capacitors is important for their longevity and performance. Steps to maintaining power capacitors:

• Inspection: First, visually inspect the capacitors for signs of damage, such as cracks or bulging on the surface. Verify the terminals and connections for corrosion or looseness. Next, examine the environment surrounding the capacitor, looking for signs of moisture, vibration, or overheating.
• Cleaning: Clean with a soft cloth and mild cleaning fluid if there are signs of corrosion or dirt on terminals or enclosures. Do not use chemical solvents or abrasives, as they may damage the capacitor.
• Testing: Power capacitors should be periodically tested to verify that they are functioning properly. Testing will indicate any problems in the capacitor's performance, such as low capacitance or high leakage current.
• Replacement: In case of malfunction, the power capacitor must be replaced. When replacing a power capacitor, one must choose a capacitor with similar specifications (capacitance and voltage rating). Follow the manufacturer's instructions for installation, including connecting wires and safety precautions.
• Protection: Protect the power capacitors with suitable housing or enclosure from infiltration by moisture, dirt, and other contaminants. Such measures will also reduce the likelihood of electrical shock or fire.
• Maintenance Schedule: Prepare a maintenance schedule so that the power capacitors are regularly inspected, cleaned, and tested. Such actions will help in early detection of any problems and thus increase the longer life and effective service of the power capacitors.