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BYFK Series Low Voltage Intelligent Composite Switch AC 220V Three Phases Switc3 Phases Simultaneous Compensation

The BYFK Series Intelligent Low-Voltage Composite Switch is a cutting-edge solution designed to enhance electrical power quality and safeguard low-voltage distribution systems. Engineered for three-phase power distribution, this switchgear equipment integrates advanced overload and short circuit protection, ensuring reliable circuit protection in industrial and commercial applications. With its three-phase voltage stabilization capabilities, it effectively addresses over voltage in power systems while providing overvoltage protection to prevent equipment damage.Optimized for low-voltage electrical networks, the BYFK Series supports three-phase electric systems by enabling simultaneous compensation for reactive power, harmonic filtering, and phase balancing. Its intelligent control module dynamically monitors low-voltage current and adjusts operations to mitigate power fluctuations, improving energy efficiency and system longevity. Ideal for low-voltage equipment integration, this switch series offers robust overload short circuit protection, reducing downtime and operational risks.Key applications include electrical switchgear and protection in facilities requiring stable three-phase power and compliance with stringent power quality standards. By addressing challenges like voltage instability and harmonic distortions, the BYFK Series ensures an overview of electricity management that prioritizes safety, efficiency, and sustainability.

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Technical Specification of BYFK Series Intelligent Low-Voltage Composite Switch

Model	BYFK Series Intelligent Low-Voltage Composite Switch
Temperature	-20℃~+55℃
Relative Humidity	At 40℃,20%-90%
Rated Working Voltage	220V 3phase 4 wire AC 50Hz
Allowable Working Deviation	The synchronous change of three-phase voltage shall not exceed ±20%
Voltage Distortion Rate	<5%
Rated Working Frequency	50Hz
Rated Current	<80A(Ordinary type); <80A(With circuit breaker type)
Lifespan	500000 times
Phase	△Delta connection method (three-phase)
Three Phase Control Capacity	<40Kvar
Power Dissipation	<1.5VA
Contact Pressure Drop	<100mV
Contact Withstand Voltage	>1600V
Response Time	<1000ms
Interval Between Each Turn On and Turn Off	>5 Second
Interval Between Two Consecutive Connections	=35 Second
Control Signal	DC12V士20%;Exchange/Communication (Optional)
Input Impedance	>6.8K
Conduction Impedance	<0.0032
Inrush Current	Less than 1.5 times the rated current
Rated Current of Feedback Contact	1A (put on as connected)

Introduction of BYFK Series Intelligent Low-Voltage Composite Switch

Boost your low-voltage distribution efficiency with the BYFK Series Low-Voltage Intelligent Composite Switch – a cutting-edge solution designed for three-phase power distribution systems. Engineered for precision and reliability, this switch series seamlessly integrates electrical switchgear and protection technologies to optimize electrical power quality while addressing challenges like over voltage in power systems, low-voltage current imbalances, and harmonic distortions.Ideal for low-voltage electrical networks, the BYFK Series ensures three-phase voltage stability and three-phase electric load balancing, delivering simultaneous compensation across all phases. Its intelligent low-voltage composite switch design enhances circuit protection and safeguards low-voltage equipment from disruptions, making it a cornerstone of modern switchgear equipment for industrial, commercial, and utility applications.Key features include:

Three-phase power synchronization for balanced loads and reduced energy loss.
Advanced monitoring of low-voltage current and voltage fluctuations.
Robust circuit protection against surges, overloads, and phase faults.
Compatibility with low-voltage distribution grids and renewable energy systems.

As part of our premium low-voltage products, the BYFK Series is certified for safety and performance, ensuring compliance with global standards. Whether upgrading existing low-voltage electrical infrastructure or deploying new three-phase power distribution networks, this switch delivers unmatched reliability for improving power quality and operational efficiency.Discover how the BYFK Series elevates your electrical power quality management – contact us today for tailored solutions in electrical switchgear and protection.

Product Advantages of BYFK Series Intelligent Low-Voltage Composite Switch

Switching while pass through zero :Depending on intelligent chip set and digital circuit and magnetic holding relay,ZMFK combined switch perform switching on when voltage passing through and switching off while current passing through zero make the switch opened or closed at zero value, no produce over-voltage. Also it has no surging current.low power loss,high service life, low fault and etc. they are widely used in the field of low voltage reactive power compensation.

Protection function:Use microprocassor to monitor and control switching relay and the operation status of input source and load,provide complete protection functions:

Protection against system over-voltage,under-voltage:when these faults occur,it will switch of automatically, and the indicator is ON for warning.
Protection of phase failure: if any phase is lost, it will switch off automatically, and the indicator is ON for warning.
Protection of power off: when the power is ON, but out of power failure suddenly,it will switch of automatically.
Protection of no-load: if the system has no load.closing operation will be not performed, and the indicator will flash for warning.
Indicate the switch status of each phase, indicators.continuous ON means normal,flashing means: over voltage,under-voltage or phase failure, A/B/C phase status indicator ON, continuous lighting, means the switch closed,the indicator of some phase flashing.means this phase has fault, or the capacitor of this phase is delayed under discharging.Self-diagnosed fault:If any phase has fault, it will reject action,indicator flash for warning.

Low power loss:Magnetic holding relay will consume power only at the time of switching, otherwise it will not need power.

Operation safety:All input signal for control are safely isolated from inner circuits,meanwhile the advanced intelligent control technology is adopted,in comparison with similar products,our type has smaller surge,and more reliable.Input signal is isolated from combined switch through photoelectric mode, high EMC protected facility, anti-interference, safe operation.

BYFK Series Intelligent Low-Voltage Composite Switch

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Applications of BYFK Series Low Voltage Intelligent Composite Switch

Applications of BYFK Series Low Voltage Intelligent Composite Switch

Industrial Manufacturing Facilities：In industrial settings equipped with heavy machinery such as CNC systems, variable frequency drives (VFDs), and high-power induction motors, harmonic distortion and reactive power imbalances are persistent issues. These problems lead to overheating of transformers, premature motor failures, and inflated energy bills due to low power factors. The BYFK Series resolves these challenges by dynamically detecting and compensating for harmonics (up to the 25th order) while balancing phase loads across all three phases. For example, in automotive assembly lines with multiple VFD-driven conveyor systems, the BYFK reduces harmonic currents by 60–80% and maintains a power factor above 0.95, ensuring compliance with IEEE 519-2022 harmonic standards. This not only cuts energy losses by 20–30% but also minimizes downtime caused by equipment malfunctions, directly boosting production efficiency.

Applications of BYFK Series Low Voltage Intelligent Composite Switch

Renewable Energy Integration (Solar/Wind Farms)：Renewable energy systems, particularly solar inverters and wind turbines, introduce intermittent harmonic injection and phase imbalances when feeding power into the grid. These fluctuations can destabilize local grids and violate IEC 61727 grid-connection standards. The BYFK Series acts as a critical interface between renewable generation units and the grid, using its 3-phase simultaneous compensation to absorb harmonic currents (THDi <5%) and correct phase asymmetries caused by variable solar/wind output. For instance, in a 10MW solar farm, the BYFK mitigates harmonic resonance between multiple inverters and compensates for reactive power gaps during cloudy periods, ensuring grid voltage stability and maximizing feed-in tariff eligibility. Its smart grid synchronization feature also enables seamless transitions during grid faults, reducing the risk of costly islanding incidents.

Applications of BYFK Series Low Voltage Intelligent Composite Switch

Commercial Buildings & Data Centers：Modern commercial complexes and data centers face significant power quality risks from unbalanced single-phase loads, such as servers, LED lighting arrays, and HVAC systems. These loads often create neutral current overloads and voltage sags, threatening IT infrastructure stability and increasing cooling costs. The BYFK Series tackles these issues by performing real-time three-phase compensation to neutralize excess currents in the neutral line and stabilize voltage levels within ±2% of the nominal 220V. In a high-rise office building with dense IT server rooms, the BYFK’s adaptive phase-balancing algorithm redistributes loads evenly across phases, reducing neutral currents by 70% and lowering HVAC energy consumption by 15%. Additionally, its power factor correction (PFC) capability ensures compliance with IEC 61000-3-12 for electromagnetic compatibility, safeguarding sensitive electronics from voltage transients.

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Intelligent Storage Workshop

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Workshop Vedio

BaoYu Holding Co., Ltd.

Production and Storage Workshop of Yu Holding Co. Ltd.: Driving Global Power Quality Innovation with Innovative Technologies
The company BaoYu Holding Co., Ltd. is an established frontrunner in the global power quality management ecosystem that has established industry-leading intelligent reactors, capacitors, and reactive power compensation solutions based on advanced R & D capabilities and rigorous manufacturing quality control. The product range encompasses key equipment including active power filters (APF), static var compensators (SVG), intelligent capacitors, composite switches, thyristor switches, and reactors, which find applications in industrial manufacturing, petrochemical industry, mining and metallurgy, ship transportation, airport infrastructures, and new energy realm (photovoltaic/wind power). Our products are exported to over ten countries and regions including Europe, the U.S., Southeast Asia, and the Middle East, and have been heavily involved in many national key projects in China.

Intelligent Storage Workshop - Precision Guarantee with Zero Loss Core technological innovations have been employed into the capacitor/ reactor storage workshop of Yu Holding to build a truly world-class warehousing management system.

Controlled with precision: The completely automatic temperature and humidity regulating system (temperature ±1°C, humidity 40%-60%) inhibits capacitor dielectric oxidation and reactor bulk insulation aging. Hence, reliable performance can be expected from products.
Automated three-dimensional warehousing: Three-dimensional high-density shelves amplify storage capacity by 200%, accommodating millions of stored components, and cut the order response time to a maximum of 48 hours.
Intelligent Fire-Fighting System: A residue-free gas fire extinguishing device is integrated with the smoke detector, enabling second-level response to electrical fire risks.
Dust-proof and anti-static provisions: Storage is suitable for precision electronic components in a Class 10,000 clean environment and ion wind dust-removal technology.

Digital Production Workshop: A Benchmark for Zero-Defect Intelligent Manufacturing.The clean production workshop of Yu Holding deeply integrates intelligence with green manufacturing to provide highly reliable products for global customers.

Natural light mixed with LED lighting: Sets a shadowless working environment, better for reduced visual fatigue, thus improving assembly accuracy.
Lean-production layout: The design of the assembly line in a U-shape reduces material handling distance and increases production efficiency up to 35%.
Full-process Automatic Visual Inspection:Real-time identification of defects in reactor winding and film defects in capacitors while upholding a 99.98% detection rate.
72-hour Aging Test:Extreme environments are simulated ranging from -40°C to +85°C to weed out early defective products; average meantime between failures exceeding 100,000 hours.
MES system monitoring: Tracking in real time of production energy consumption, equipment use efficiency, and yield rate, with the defect rate almost zero.