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Power Capacitors
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- BSMJ Series Self-healing Low Voltage Shunt Capacitors
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- BY81 Series Intelligent Capacitor
- BY82J Series Anti-harmonic Intelligent Capacitor
- BY89 Series Intelligent Capacitor
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- Reactor
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BY194U-A*4 Three Phases Voltmeter 3 Phase Power Quality Analyzer Equiped With Three-row LED Digital Display
Main Datas of BY194U-A*4 Three Phases Voltmeter
| Model | BY194U-A*4 Three Phases Voltmeter |
| Power Supply | Ensure a steady and reliable AC220V±10% power supply at 50/60Hz, allowing for consistent performance |
| Power Consumption | Remarkably efficient with power consumption of less than 1.5W, offering enhanced energy savings |
| Product Measurement Accuracy | Enjoy precision with a stunning RMS measurement accuracy of 0.5% grade |
| Working Environment | Dependably operates within a temperature range of -10°C to 50°C, suitable for diverse environments |
| Storage Environment | Safely store the unit in temperatures ranging from -20°C to 75°C, ensuring longevity |
| Insulation Situation | Superior insulation greater than 5MΩ ensures safety and reliability |
Introduction of BY194U-A*4 Three Phases Voltmeter
BY194U-A*4 series three-phase voltmeter is an ideal device for monitoring voltage. The meter can realize programming, automatic measurement, digital tube display, input and output, variable output, over-limit alarm, digital communication and other functions. The product adopts advanced microprocessor and digital signal processing technology, integrating digitization, intelligence and networking. It has superior performance, high measurement accuracy, beautiful appearance and strong EMC compatibility. It can completely replace traditional analog and digital instruments. At the same time, it can be used as a terminal component of power monitoring and dispatching system, SCADA system, DCS system, BAS system, etc. to realize remote data acquisition and monitoring. Monitoring and control.
The BY194U-A*4 Three-Phase Voltmeter by BaoYu Holdings Limited is a state-of-the-art 3-phase power quality analyzer engineered to deliver unparalleled accuracy in monitoring three-phase voltage, phase-to-phase voltage, and electrical supply parameters. Equipped with a three-row LED digital display and solid-state electronics, this device rivals industry leaders like the Fluke Three Phase Power Quality Analyzer and Fronius 3 Phase Smart Meter, offering advanced diagnostics for power quality measurement systems. It excels in detecting phase voltageimbalances, phase differences, and harmonic distortions while integrating power quality factoranalysis and electrical arc risk mitigation. Ideal for power quality experts and engineers, it supports real-time electrical current monitoring and seamless SCADA integration, ensuring compliance with global power quality group standards and optimizing power quality and distribution in industrial, commercial, and renewable energy applications.
Technical Excellence & Competitive Edge：Designed for power quality electrical engineering professionals, the BY194U-A*4 combines 3-phase power stability analysis with piezo-electric surge detection, outperforming alternatives like the Fronius Smart Meter 3 Phase in versatility and cost-efficiency. Its industrial-grade durability covers three-phase AC voltage ranges (0–480V AC) and provides actionable insights into power quality abstract metrics, including THD and phase-to-phase voltage imbalances. Whether addressing electricity single-phase challenges or managing complex three-phase voltagenetworks, this analyzer empowers users to enhance electrical supply reliability, reduce downtime, and achieve superior power quality expert outcomes across diverse sectors.
Application of BY194U-A*4 Three Phases Voltmeter
For real-time voltage monitoring and harmonic mitigation in industrial manufacturing facilities：The BY194U-A*4 three-phase voltmeter is ideal for industrial manufacturing facilities that rely on three-phase AC power systems to operate heavy machinery, automated production lines, and precision equipment. In such environments, maintaining stable three-phase voltage and minimizing phase angle imbalance is critical to preventing equipment failure, production downtime, or product defects. The analyzer continuously monitors phase voltage deviation, voltage imbalance (target value is less than 2%, in line with industry standards), and harmonic distortion (for example, 3rd and 5th harmonics from inverters or UPS systems). Its three-row LED display shows parameters such as phase difference, total harmonic distortion (THD), and reactive power in real time, allowing operators to optimize power quality and implement corrective measures such as harmonic filters or capacitor banks to avoid utility fines and energy waste. The analyzer complies with standards, ensuring regulatory compliance while improving energy efficiency in facilities with high non-linear loads.
Renewable energy grid connection and grid stability assurance：In solar farms, wind turbines or hybrid energy systems, the BY194U-A*4 excels at monitoring three-phase power quality during grid interconnection. Renewable energy sources often introduce voltage fluctuations, frequency deviations or harmonic disturbances due to inverter power generation1013. The analyzer captures key indicators such as phase voltage unbalance, transient surges (up to 8 kV13) and harmonic curves (up to 50th311), ensuring compliance with grid specifications such as IEC 61000-4-30. In PV power plants, for example, it can detect voltage sags during periods of cloud cover or phase angle mismatches caused by unstable power generation. Its rugged design and IP65 protection rating38 make it ideal for outdoor installation, while real-time data logging supports predictive maintenance to prevent inverter failure or grid instability.
Energy optimization for commercial buildings and data centers：Commercial complexes and data centers require ultra-stable three-phase AC power to protect sensitive IT infrastructure and HVAC systems. The BY194U-A*4 addresses this by analyzing three-phase voltage stability, power factor (e.g., identifying lagging power factor 14 for inductive loads), and neutral current overloads caused by high-harmonic equipment such as servers or UPS systems. Its high-precision three-phase voltmeter function detects micro voltage dips/swells, while the LED display highlights phase differences that could cause motor overheating or relay failure. By integrating with energy management systems, it enables load balancing, peak demand reduction, and power quality analysis to comply with green building certifications. In data centers, for example, it can reduce the risk of downtime by identifying neutral overheating caused by harmonics, ensuring uninterrupted operation.
Product Features of BY194U-A*4 Three Phases Voltmeter
1. Real-time high-precision three-phase voltage monitoring
BY194U-A*4 can measure three-phase voltage (UA, UB, UC) and phase voltage simultaneously, ensuring ±0.2% accuracy and achieving industrial-grade reliability. Its three-row LED display clearly displays the three-phase AC voltage and can quickly detect faults in unbalanced or fluctuating power systems.
2. Comprehensive power quality analysis
Analyzes three-phase power quality parameters including harmonic distortion (up to 50th order), voltage sags/swells, and phase angle differences to identify grid instability. Compliant with international standards, the device provides practical recommendations for harmonic mitigation and reactive power compensation strategies.
3. Dynamic phase difference detection
Monitor phase differences in real time to prevent equipment damage caused by load imbalance. The analyzer calculates phase voltage imbalance (≤1%) and alerts the user through LED indicators to ensure optimal performance of the three-phase AC system.
4. Multifunctional LED display screen to enhance usability
The three-row LED screen simultaneously displays three-phase voltage, current, frequency and power quality indicators (such as THD%, PF). This user-friendly interface simplifies troubleshooting of complex three-phase power systems, thereby reducing downtime.
5. Advanced Communications and Data Logging
Seamlessly integrate with IoT platforms via RS485 to enable remote monitoring of three-phase power quality trends. Store up to 12 months of data for compliance reporting or energy audits, supporting DL/T645-2007 and Modbus protocol .
6. Rugged design for harsh environments
The BY194U-A*4 is designed to withstand voltage fluctuations (80–120% of rated voltage) and industrial noise, has surge protection, and operates over a -25°C to +70°C temperature range. It is ideal for three-phase power quality analysis in manufacturing plants, renewable energy farms, and data centers.
Product Wiring Method
Product Size Informations
| Model | A1 | A2 | Hole opening size |
| BY194U-A*4 Three Phases Voltmeter | 72mm | 72mm | 67×67mm |
Details Determine Quality
Advanced three-phase voltage measurement accuracy using industrial-grade components:The BY194U-A*4 three-phase voltmeter integrates high-precision voltage sensors and industrial-grade microprocessors to provide unparalleled accuracy in monitoring three-phase voltages and three-phase AC power systems. Unlike standard voltmeters, our devices use a triple redundant measurement architecture to ensure consistent readings on all phases, even in environments with load fluctuations or harmonic interference. The use of military-grade capacitors and high-temperature resistant resistors minimizes drift over time, ensuring long-term reliability of three-phase power quality analysis. By accurately measuring phase voltage differences as low as 0.1V and detecting phase imbalance within ±0.5%, this voltmeter outperforms competitors such as Fronius in scenarios that require fine power quality diagnostics. The design also uses phase-to-phase electrical isolation to eliminate crosstalk and ensure safe operation in high-voltage industrial power grids. This makes it an ideal choice for applications that require strict functionality of three-phase power quality analyzers, such as data centers, manufacturing plants, and renewable energy facilities.
Three rows of LED display screen, real-time display of power quality:The BY194U-A*4 features a patented three-row LED digital display that simultaneously displays three-phase voltages, phase differences, and harmonic distortion levels, a key advantage over single-screen competitors such as Fronius. Each row of the display corresponds to a specific parameter: the top row shows real-time phase-to-phase voltages (L1-L2, L2-L3, L3-L1), the middle row shows individual phase voltage values with an accuracy of ±0.2%, and the bottom row tracks power quality indicators such as THD (Total Harmonic Distortion) and imbalance. The LEDs feature automotive-grade backlight technology, which allows 180° visibility even in bright environments, ensuring that operators can quickly identify three-phase power quality anomalies such as voltage sags or swells. The design complies with the international Class A power quality analysis standard, making it the tool of choice for engineers troubleshooting three-phase AC power systems in mining, HVAC, or smart grid deployments.
Adaptive circuit for dynamic three-phase power environment:Equipped with auto-ranging voltage detection (50-1000V AC) and an adaptive phase compensation algorithm, the BY194U-A*4 excels in unstable three-phase grids where conventional meters fail. Its proprietary DSP (digital signal processor) analyzes phase differences at 10,000 samples per second and dynamically adjusts the measurement interval to capture transient events such as voltage spikes or harmonic oscillations. The hardware features 4-layer PCB shielding and ferrite cores to suppress EMI/RFI interference (a common pain point in industrial environments), ensuring accurate three-phase voltage readings even near frequency converters or arc furnaces. Compared to Fronius devices, our voltmeters have a wider range of compatibility with global three-phase AC power standards (50/60Hz, IT/TT/TN systems) and include built-in power quality reporting software compliant with international standards. This is essential for energy auditors and facility managers to optimize three-phase power quality in mixed load environments such as hospitals, ports or solar farms.
Storage Workshop
Production workshop
Workshop Vedio
Baoyu Holding Co., Ltd.
Baoyu Holding Co., Ltd. was founded in 2015 and is located in Wenzhou City, Zhejiang Province. The location is excellent and the transportation is convenient. We have very rich industry experience and is a trusted supplier. The company has advanced production equipment and skilled front-line employees. Our company is mainly engaged in the production and sales of power quality products，such as active power filters, static var generators, intelligent capacitors, power capacitors, reactive power compensators, composite switches, capacitor contactors, thyristor switches, reactors. Our company knows that the development of the company depends on the innovation and quality of the products. Therefore, our products have strict quality control from the procurement of raw materials to the sale of finished products. The company has established a quality management system that meets the requirements of the international quality management system. The company continuously releases the original innovations according to the market and customer needs, and always maintains the novelty and innovation of the products. The company wants the customer's thoughts and urgency. Solving problems for customers and meeting customer needs is our eternal pursuit!Our company's products are sold worldwide. The company has won the unanimous recognition of consumers with satisfactory product quality and perfect after-sales service. We have a professional R & D team. We can accept O E M and O D M.We sincerely welcome friends from all over the world to visit our company and cooperate with us on the basis of long-term mutual benefits. We are looking forward to receiving your enquiry soon.
Product Excellence
• Harmonic Mitigation and Power Quality Improvement: Our APF and SVG systems eliminate harmonic interference, reduce energy losses, and increase grid reliability, making them ideal for factories, solar/wind farms, and heavy industry.
• Reactive Power Compensation: Customizable solutions address voltage fluctuations and three-phase imbalance, improving energy efficiency by up to 30%.
• Intelligent circuit protection: Smart capacitors and hybrid compensation devices feature real-time monitoring, remote control, and fail-safe mechanisms to minimize downtime.
Additionally, our cleanroom facilities accommodate all operations, from compounding processes where precise material formulations are performed, to production floors where new products are created. Natural light effectively illuminates the entire production process, which is supplemented by artificial lighting to create an optimal workspace. The factory layout is carefully designed to ensure maximum efficiency, facilitating smooth and fast operation throughout the facility to achieve high productivity, and is staffed with cross-trained technicians ready to meet any production challenges. Automated assembly lines equipped with online quality control systems ensure dimensional and electrical compliance of each batch of products, while complying with ISO standards to ensure that products meet global industry requirements.By integrating advanced automation, data analysis and strict quality procedures, we achieve near-zero defects, provide durable products and solutions tailored to customer needs. Commitment to operational excellence makes Baoyu a reliable partner for mission-critical power solutions worldwide.
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