BY83JS Series Three-Phase Controller Intelligent Capacitor Controller Power Factor Compensation Controller 380V

Main technical parameters

Introduction to BY83JS Intelligent Capacitor Controller

The BY83 Series Intelligent Capacitor Controller 380V by Baoyu Holding Co., Ltd. is a cutting-edge Frequency Controller and Electricity Controller designed to optimize energy efficiency in Low Voltage Grid systems. This Intelligent Controller Series integrates advanced algorithms to dynamically manage reactive power compensation, ensuring stable voltage levels and minimizing energy losses. Ideal for industrial and commercial applications, it supports 3 Phase AC Motor Controller operations, enhancing motor performance while reducing harmonic distortion. Compatible with Low Voltage Current environments (up to 380V±20%), it seamlessly monitors and adjusts capacitor banks, safeguarding against over-voltage conditions and improving power factor accuracy. Its compact design and real-time data display simplify installation in diverse electrical setups, from manufacturing plants to renewable energy infrastructures.

As part of the Intelligent Capacitor Controller lineup, the BY83 Series offers Soft Start Motor Controller capabilities, enabling smooth motor activation to prevent mechanical stress and extend equipment lifespan. This Smart Motor Controller also features adaptive current sampling (0-5A) and lightning-resistant circuitry, ensuring reliability in harsh conditions (-45°C to 55°C). Engineers benefit from its self-diagnostic functions and polarity auto-detection, eliminating manual CT adjustments. Whether deployed in HVAC systems, agricultural irrigation, or municipal water supply networks, the BY83 Series delivers unmatched precision in Low Voltage Current management, making it a cornerstone of modern energy-saving solutions.

 Detailed Workflow Explanation of BY83JS Intelligent Capacitor Controller

BY83 Series Intelligent Capacitor Controller, 380V  Designed specifically for industrial and commercial power systems, the BY83 Series combines dynamic reactive power compensation, harmonic filtering, and intelligent monitoring functions to optimize power quality and improve equipment efficiency. Its core working principle is based on thyristor zero-crossing switching technology. By real-time acquisition of grid voltage, current, and power factor signals, it dynamically adjusts the switching state of the capacitor bank to achieve precise reactive power compensation, with a response speed of up to 10ms.

Signal Acquisition and Processing:
Equipped with a high-precision power parameter chip (such as an MCU processor), it continuously monitors the voltage, current harmonics (5th order and above), and power factor of the 380V grid. Harmonic content is analyzed using FFT algorithms to generate compensation commands.

Dynamic Switching Control:  
It employs a thyristor switch triggered by a pulse transformer to switch the capacitor bank at the voltage zero-crossing point, avoiding inrush current impacts and extending equipment lifespan. It supports multi-stage capacity combinations (e.g., 33.3/40/66.7kvar) to adapt to rapidly changing load scenarios.

Harmonic Filtering and Power Factor Correction:
Integrated with 5%~7% filtering reactors, it suppresses 5th order and above harmonics while improving the power factor to above 0.95 through capacitor-reactor groups. This reduces line losses and enhances transformer utilization.

Intelligent Protection and Monitoring:
Equipped with multiple protection mechanisms (overcurrent, quick-break, phase loss, overtemperature), it provides real-time display of capacitor and reactor temperature rise (temperature rise <8K/20K). Through the RS-485 communication interface, it supports remote monitoring, enabling fault early warning and data transmission.

The functional features of BY83JS Intelligent Capacitor Controller

Setting functions

• CT ratio setting;Protection setting;Delay time setting;Power factor setting.

Control function

• Automatic and manual control;
• Automatic switching control based on controlled physical quantities (reactive power, reactive current, power factor, time period);
• Capacitors with the same capacity are controlled by cyclic switching, while capacitors with different capacitiesare controlled by reactive power deficiency selection;
• Before switching the capacitor, predict the distribution reactive power and voltage changes generated byswitching. lf reverse operation is expected after switching, no switching control will be performed.

Measurement function

• Distribution three-phase voltage, current, and power factor;
• Distribution of three-phase active and reactive power.
• Signal function
• Number and capacity of intelligent point capacitors in the system;
• Capacitor operation and shutdown siqnal;
• Product or peripheral fault signal.

Protection function

• Overvoltage,undervoltage, and voltage loss protection;
• Overvoltage acceleration protection;
• Switching vibration protection.

Wiring Diagram of Intelligent Capacitor Controller

When instaling the controller, refer to the electrical schematic diagram of the rear panel for wiring.The specific wiring method is:

• UA, UB, and UC are connected to A, B, and C three-phase voltages respectively, while UN is connected
  to the neutral line;
• La+, la -, lb+, lb -, lc+, and lc - are connected to A, B, and C three-phase currents respectively;A. B is an RS485 communication interface, which can be connected to the communication port of a low-voltage intelligent capacitor.
• Note: When all smart capacitors are co compensating capacitors, only lb+and lb - can be connected to theB-phase current line.