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BY75 Series Reactive Power Automatic Compensation Controller Power Factor Controller Low Voltage Reactive Power Compensation Controller 380V
Product Parameters of BY75 Series Intelligent Reactive Power Compensation Controller
| Model | BY75 Series Intelligent Reactive Power Compensation Controller | |
| Working Voltage | AC380V±20% | |
| Sampling Voltage | AC 380V | |
| Working Frequency | 50Hz±5% | |
| Sampling Current | 0-5A | |
| Maximum power consumption of the entire machine | 14W (Depending on the power of the controlled switching switch) | |
| Control output contact | 24 Channels,Each DC12V x 30mA | |
| Hole Size | 138 x 138mm | |
| Compensation Method | Co-Compensation | |
| Measurement Accuracy | Voltage | ±0.5% |
| Current | ±0.5% | |
| Active Power | ±1.0% | |
| Reactive Power | ±1.0% | |
| Frequency | ±0.5% | |
| Power Factor | ±1.0% | |
| Control Parameters | Control Sensitivity | 30mA |
| Target COs φ (1) | 0.85~1.00 Step 0.01 Factory preset 1.00 | |
| Target COs φ (2) | 0.00-0.60 Step 0.01 Factory preset 1.00 | |
| Threshold Coefficient | 0.5-1.2 Step 0.1 Factory preset 1.00 | |
| Switching Delay (1) | 00s-600s Step 1/0.02 Factory preset 0s | |
| Switching Delay (2) | 00s~300s Step 1 Factory preset 8s | |
| Overvoltage Protection | 230V~280V Step 1V Factory preset 240V | |
| Undervoltage Protection | 210V-180V Step 1V Factory preset 190V | |
| Harmonic Voltage Exceeding limit | 00.0%~25.0% Step 0.5% Factory preset 00.0% | |
| Harmonic Current Exceeding limit | 00.0%~100.0% Step 0.5% Factory preset 00.0% | |
Introduction of BY75 Series Intelligent Reactive Power Compensation Controller
Introducing the BY75 Series Reactive Power Automatic Compensation Controller from Baoyu Holdings Ltd., a leading Compensation Controller Factory in China specializing in advanced power quality solutions. This Intelligent Controller Series optimizes Reactive Power Compensation in 3 Phase Electrical Systems, ensuring efficient energy management for Power Factories and industrial applications. Designed for Dynamic Reactive Power Compensation, it enhances Power Quality Factor by automatically adjusting Electrical Reactive Power to stabilize China 3 Phase Power Current and improve Energy Power Factor.The BY75 series reactive power compensation controller produced by Baoyu Holding Co., Ltd. is ingeniously devised to raise the power factor of your system to the desired range, even under normal load circumstances. This outstanding device is equipped with an adjustable low-load blocking function, which effectively reduces unnecessary capacitor casting and cutting oscillations. Due to its strong anti-interference ability, the controller operates stably and is not influenced by harmonics, guaranteeing smooth performance and maximum reliability for your power systems.
Equipped with real-time Harmonic Analysis and Active Harmonic Mitigation capabilities, the BY75 minimizes Harmonics in Power systems while supporting Reactive Power Compensatorsfor balanced 3 Phase Devices. Its Intelligent Capacitor Controller integrates Distribution Monitoring to manage Reactive Power in Power Systems, reducing losses in China 3 Phase AC Motor Controller networks. Ideal for Factory Energy optimization, this China Power of 3 Phase System-compatible device ensures compliance with global standards for Power of Quality and Frequency Drive Controller precision.Trust the BY75 Reactive Power Compensation System to deliver reliable Harmonic Systemstability, Reactive Power Sources management, and cost-effective Reactive Compensation for 3 Phase Power infrastructures.
Product Features BY75 Series Intelligent Reactive Power Compensation Controller
- Calculating the switching capacitor capacity based on fundamental wave reactive power can avoid any form of switching oscillation
- Correctly display the power factor at the grid harmonics
- High power factor, high measurement accuracy and wide display range
- Real-time display of total power factor (PF) and fundamental power factor (DPF)
- Real-time display of THDv and THDi
- There are 12 output modes for users to choose from
- Human-machine interface is easy to operate
- Various control parameters are fully digitally adjustable and intuitive to use
- It has two working modes: automatic operation and manual operation.
- With overvoltage and undervoltage protection
- With voltage harmonic protection function
- With power-off data storage protection function
- Low current signal input impedance
How BY75 Series Intelligent Reactive Power Compensation Controller works
Real-time monitoring and analysis
BY75 continuously monitors key electrical parameters such as voltage, current, harmonics and power factor through high-precision sensors. The integrated harmonic analysis function can detect distortion (THD) to prevent capacitor overload and ensure safe operation.
Automatic capacitor switching
The controller uses advanced algorithms to calculate the required reactive power compensation based on real-time load conditions. It automatically switches capacitor banks to balance inductive loads (e.g. motors, transformers) and corrects the power factor to a level close to unity (0.95-1.0). This reduces line losses, avoids fines from power companies, and improves grid stability.
Distribution network protection
BY75 integrates distribution network monitoring to protect against overvoltage, undervoltage and phase imbalance. Its self-diagnostic system alerts users to faults such as capacitor failure or harmonic resonance risk, ensuring uninterrupted system operation.
Data logging and communication
The controller is equipped with RS-485/Modbus protocol, which supports remote monitoring and integration with SCADA/EMS systems. Historical data of reactive power compensation, energy saving and harmonic analysis can be exported for compliance reporting.
Product Wiring Method
Application Fields of BY75 Series Intelligent Reactive Power Compensation Controller
Industrial Manufacturing Facilities
The BY75 Series Reactive Power Automatic Compensation Controller is a key solution for industrial manufacturing facilities that require robust power quality management. Reactive power imbalance and harmonic distortion are common in high-energy consumption environments with heavy machinery, variable frequency drives (VFDs), and inductive loads. These issues can lead to poor power factor (typically less than 0.9), increased electricity bills due to power company fines, and potential risk of equipment overheating. The BY75 controller addresses these challenges with real-time harmonic analysis and dynamic reactive power compensation. By continuously monitoring the grid, it automatically switches capacitor banks to offset inductive reactive power, optimizing the power factor to a level close to unity (0.95-0.99). This can reduce energy losses, lower demand charges, and extend the life of transformers and motors. In addition, its advanced distribution monitoring function can detect harmonic distortion caused by non-linear loads (such as 3rd, 5th, 7th harmonics), thereby achieving active harmonic suppression. Industries such as automotive plants, steel mills and chemical processing plants benefit from its seamless integration with existing power infrastructure, ensuring compliance with the standard for harmonic control and the standard for low-voltage switchgear.
Commercial buildings and data centers
Commercial buildings with high-density HVAC systems, LED lighting, and IT infrastructure face severe power quality challenges, including low power factor and harmonic pollution. The BY75 series power factor controller provides a tailored solution for these environments through automatic reactive power compensation and enhanced grid stability. Its sophisticated capacitor switching technology neutralizes the lagging reactive current of inductive loads, maintaining the power factor above 0.95, thereby avoiding power company surcharges. The controller's integrated harmonic analysis function identifies and quantifies harmonic distortion from power supplies such as uninterruptible power supplies (UPS) and server racks, supporting targeted harmonic mitigation strategies. For data centers where uptime is critical, the BY75 ensures reliable power distribution monitoring and prevents faults such as voltage sags and transient surges that can interrupt operations. It also meets green building certifications such as LEED, improves energy efficiency and reduces carbon footprint. By integrating with building management systems (BMS), the controller provides real-time insights into energy consumption patterns, allowing facility managers to optimize load balancing and reduce operating costs.
Renewable energy and distributed generation systems
In renewable energy systems such as solar farms and wind turbines, the intermittent nature of power generation often causes voltage fluctuations and reactive power imbalances. The BY75 low-voltage reactive power compensation controller stabilizes these grids by dynamically regulating capacitive and inductive reactive power to maintain a balanced power factor. For solar PV plants, it absorbs excess reactive power to mitigate issues such as overvoltage during peak generation hours, ensuring compliance with grid codes . The controller’s harmonic analysis module is critical for hybrid systems combining inverters and battery energy storage, where switchgear generates harmonics that degrade equipment performance. By deploying a harmonic filtering algorithm, the BY75 reduces total harmonic distortion (THD) to less than 5%, protecting sensitive electronic equipment. In addition, its distribution monitoring capabilities provide granular visibility of feeders and substations, allowing operators to pinpoint inefficiencies in real time. Utilities and microgrid operators use the controller to enhance grid resilience, reduce technical losses, and avoid penalties for poor power quality. Its compatibility with smart grid protocols ensures seamless integration into modern energy management systems, making it an integral part of a sustainable power infrastructure.
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Baoyu Holdings Limited - Powering a smarter, safer power system
Baoyu Holdings Limited is a leading innovator in intelligent power quality management and advanced circuit protection solutions, dedicated to optimizing power efficiency and reliability for industrial, commercial and utility customers around the world. We focus on smart grid power quality products and artificial intelligence-driven circuit protection systems, providing cutting-edge technologies to reduce harmonics, correct three-phase imbalance, improve power factor and protect critical infrastructure from electrical disturbances.
Technical Excellence:
Our intelligent power quality controllers dynamically address harmonic distortion, voltage fluctuations and reactive power issues using real-time monitoring and adaptive algorithms. Our solutions, including active harmonic filters, static VAR compensators (SVCs) and surge protectors (SPDs), provide predictive maintenance and energy efficiency optimization, ensuring compliance with standards while reducing energy waste by up to 30%.
Service advantages:
- Custom Electrical Solutions: Tailored harmonic analysis and system audits for industries such as manufacturing, data centers and renewable energy.
- Fast global support: 24/7 technical assistance, on-site commissioning, and remote diagnostics via IoT-enabled platforms.
- Future-proof upgrades: Seamlessly integrate with existing infrastructure to enhance grid stability and long-term return on investment.
Baoyu is ISO 9001 certified. With a rigorous R&D attitude and more than 15 years of field experience, we are committed to solving complex challenges in the fields of voltage sag mitigation, power factor correction and power system reliability. Whether it is optimizing industrial energy conservation or strengthening the voltage transient protection of facilities, we are committed to helping customers achieve operational resilience and sustainability.
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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