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Power Capacitors
- BY71 Series Cylindrical Capacitor
- BSMJ Series Self-healing Low Voltage Shunt Capacitors
- BY86 Series Controlled Intelligent Capacitor
- BYKXG/F Series Anti-harmonic Intelligent Capacitor
- BY81 Series Intelligent Capacitor
- BY82J Series Anti-harmonic Intelligent Capacitor
- BY89 Series Intelligent Capacitor
- Intelligent Controller Series
- Reactor
- Intelligent Switch Series
- Alternating Current Contactor
- Multifunctional power instruments
- Circuit Breaker
- APF/SVG/SPC Cabinet & Module Series
BY194U3*4 Three-Phase Voltmeter Equiped With Three Row LED Digital
Main Data of BY194U3*4 Three-Phase Voltmeter
| Model | BY194U3*4 Three-Phase Voltmeter |
| Operation 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 |
| Measurement Accuracy | Enjoy precision with a stunning RMS measurement accuracy of 0.5% grade |
| Operation 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 |
Product Introduction of BY194U3*4 Three-Phase Voltmeter
BY194U3*4 Three-Phase Voltmeter with Three-Row LED Digital Display is a high-precision three phase power analyser designed to optimize power system quality in Three Phase Low Voltage and China Three Phase Grid environments. This Multifunctional Power Instrument monitors three-phase voltage, phase difference, and 3 phase power voltage in real-time, while addressing harmonic distortion electrical issues and enabling voltage compensation in power systems. Compatible with industry standards like the Dranetz power quality analyzer, it excels in harmonic discovery and power quality data analysis, helping industries mitigate harmonic system disruptions and improve power quality and distribution. Engineered for Three Phase Low Voltage Factory applications, it integrates unipower power quality meter technology to deliver actionable insights into three-phase power quality, reactive power inefficiencies, and unbalanced loads. As a leading China Three Phase Grid Supplier, BaoYu Holdings combines innovation with reliability, empowering users to enhance the power of quality in energy management. Ideal for sustainable grid practices, this device ensures compliance, efficiency, and precision, solidifying its role as a cornerstone in modern Low Voltage Electrical infrastructure.
Product Features BY194U3*4 Three Phase Voltmeter
- Precision monitoring of China's three-phase power grid
- Optimized for low three-phase voltage conditions
- Active Power Measurement and Management
- RS485 communications for smart grid integration
- Compact LED display, clear display
- Harmonic Analysis and Mitigation
- Compatibility with three-phase motor starters
- Wide operating temperature range
- Real-time phase voltage monitoring
- Energy efficiency compliance
- Multi-protocol flexibility
- Industrial-grade durability
Product Advantages of BY194U3*4 Three-Phase Voltmeter
1. Advanced three-phase voltage accuracy and stability to improve power system quality
The BY194U3*4 three-phase voltmeter integrates an ultra-high-precision measurement chip with 0.5-level accuracy certification, which can reliably monitor three-phase voltage, phase voltage and phase difference in real time. Designed for Chinese three-phase grid providers and global markets, the device uses ITF technology (current insulation protection) to eliminate interference caused by harmonic distortion and voltage fluctuations, which is essential for maintaining power system quality in low-voltage environments. Its three-row LED digital display can simultaneously display line voltage, phase voltage and harmonic system indicators, making it an ideal choice for three-phase power analyzer applications in industrial and commercial environments. The meter's rugged design meets three-phase low-voltage factory standards and uses flame-retardant materials and anti-aging seals to withstand harsh electrical environments. By supporting three-phase AC systems (3P3W and 3P4W), it ensures compliance with China's three-phase infrastructure requirements, while enabling seamless integration with power quality data platforms through RS-485 and Modbus protocols.
2. Multifunctional power meter with harmonic detection and compensation functions
Designed to solve the electrical challenges of harmonic distortion, the BY194U3*4 series integrates a harmonic discovery algorithm that detects and analyzes up to the 50th harmonic, providing actionable insights for voltage compensation in power systems. This feature makes it a cost-effective alternative to high-end tools such as Dranetz power quality analyzers, especially for three-phase low-voltage applications. The device's multi-functional power instrument architecture monitors three-phase power supply voltage, reactive power, and power factor in real time, which is critical for optimizing power quality and distribution networks. Its modular design allows expansion of up to three I/O modules, supporting single-supply power quality meter configurations for grid-connected solar systems or industrial motor protection. The communication interface contains surge protection circuits and an independent power supply to ensure durability in environments susceptible to voltage spikes, complying with Low Voltage Electrical Safety Standard .
3. Smart Integration for Comprehensive Power Quality Analysis
As a three-phase analyzer tailored for modern energy systems, the BY194U3*4 excels in power quality data aggregation and remote management. Its ultra-high-precision RTC (Real-Time Clock) with temperature compensation ensures timestamp accuracy for auditing three-phase power quality trends, essential for diagnosing intermittent issues like voltage sags or swells. The meter’s compatibility with the power of quality platforms enables seamless data sharing with SCADA or PLC systems, facilitating proactive maintenance and compliance reporting. Designed for China Three Phase Grid Suppliers, it supports dynamic load balancing and voltage compensation in power systems, reducing losses caused by phase imbalance in transformers and distribution feeders. The IP21-rated casing and fan-free cooling system ensure reliability in indoor utility substations or manufacturing plants, making it a cornerstone for harmonic system mitigation and three-phase alternating current stability.
Product Wiring Method
Product Size Informations
| Model | A1 | A2 | Hole opening size |
| BY194U3*4 Three-Phase Voltmeter | 80mm | 80mm | 76×76mm |
Application of BY194U3*4 Three-Phase Voltmeter
Commercial building energy management
Commercial facilities such as shopping malls or office buildings use BY194U3*4 to optimize three-phase power quality and reduce energy costs. The voltmeter is capable of monitoring line voltages (e.g. 380V/400V/415V) and phase voltages (e.g. 220V/230V), supporting load balancing between HVAC systems, elevators, and lighting networks. For example, in a 3P3W (three-phase three-wire) setting, the device can identify phase shift issues that can lead to increased neutral current and energy waste. By integrating with power quality monitoring systems, it can perform dynamic reactive power compensation through capacitor banks, thereby improving power factor and reducing power company fines. In addition, its rugged design (IP21 protection rating) and modular I/O scalability make it ideal for retrofitting into existing switchboards, ensuring compliance with electromagnetic compatibility standards.
Industrial power distribution system monitoring
The BY194U3*4 three-phase voltmeter is ideal for real-time monitoring of three-phase voltage in industrial power distribution systems such as factories, data centers, and manufacturing plants. These environments rely on stable three-phase AC power to operate heavy machinery, transformers, and capacitor banks. The device's three-row LED display instantly displays phase voltage (Vph) and line voltage (VL) indicators, allowing technicians to detect phase imbalance or phase angle deviation that may cause equipment overheating or energy inefficiency. For example, in a 3P4W (three-phase four-wire) configuration, the voltmeter can identify voltage imbalance caused by uneven load distribution, which can lead to degraded power quality and increased harmonics. With integrated Modbus RTU communication (via RS-485), the device supports seamless data transmission to a SCADA system or PLC for three-phase power quality analysis, helping operators implement corrective measures such as reactive power compensation or harmonic filtering.
Renewable energy grid connection and grid stability
In solar farms or wind power facilities, the BY194U3*4 ensures reliable three-phase voltage measurement to keep the grid synchronized and stable. Renewable energy systems often face challenges such as intermittent power generation and voltage fluctuations, which can disrupt the balance of the three-phase AC power. The voltmeter's high-precision monitoring function (up to 0.5% accuracy) detects phase differences and transient voltage sags/swells, which are critical for inverters and grid-connected systems. For example, in solar PV power plants, the device can track phase-to-phase voltage changes caused by shading or panel faults, enabling rapid troubleshooting. It is compatible with three-phase power quality analyzers, allowing operators to evaluate harmonic distortion (THD) and verify compliance with IEEE 519 standards to minimize grid disturbances.
Storage Workshop
Production workshop
Workshop Vedio
Baoyu Holdings Limited - Leading in intelligent power quality solutions to create a sustainable future
Baoyu Holdings Limited is a world-renowned high-tech enterprise focusing on the research, development, production and sales of intelligent power quality management systems and intelligent circuit protection solutions. With more than ten years of professional experience, we provide cutting-edge technologies to improve energy efficiency, stabilize the power grid and mitigate electrical interference in the industrial, commercial and renewable energy fields. Our products are trusted by more than a dozen countries including the United States, Europe, Southeast Asia and the Middle East, serving industries such as manufacturing, petrochemicals, mining, metallurgy, and solar/wind energy systems.
Core product portfolio
Our solutions address key challenges in harmonic filtering, reactive power compensation and three-phase imbalance correction, ensuring optimal power quality and grid reliability:
Active Power Filter (APF): Advanced harmonic mitigation technology eliminates up to 97% of harmonic distortion, protecting sensitive equipment.
Static VAR generator (SVG): Dynamic reactive power compensation used to stabilize voltage and reduce energy losses.
Smart capacitors and hybrid compensation systems: modular design, flexible deployment in low voltage grids, and enhanced power factor correction.
Smart controllers and switchgear: IoT devices for real-time monitoring and automated grid management, including the BYFK low-voltage switchgear with integrated circuit circuit breaker.
Customized Solutions: Tailor-made systems for solar/wind farms, industrial plants and infrastructure projects, ensuring compliance with international standards.
Manufacturing Excellence and Smart Factory Advantages
As a national high-tech enterprise with many patents, Baoyu integrates innovation and precision engineering:
State-of-the-art facilities: Our smart factory in Zhejiang, China features automated production lines, robotic assembly, and IoT-driven quality control systems, ensuring 99.8% product consistency.
Digital Twin Technology: Using big data analytics and AI-driven predictive maintenance, we optimized production workflows and reduced downtime by 30%.
R&D cooperation: Established strategic partnership with Shanghai Jiao Tong University, Zhejiang University and Xi'an Jiaotong University, and achieved breakthroughs in power electronics and grid stability.
Global Certifications: Products comply with international standards and are verified through rigorous testing in our CNAS accredited laboratory.
Why choose Baoyu?
Energy efficiency and cost savings: By optimizing power factor correction and minimizing harmonic losses, operating expenses can be reduced by up to 25%.
Scalable solutions: From compact APFs for SMEs to large SVG systems for utilities, we support projects of all sizes.
24/7 technical support: Our multilingual engineering team provides end-to-end service, from site audits to post-installation maintenance.
Sustainability Commitment: Driving the green energy transition with solutions designed for solar inverters, electric vehicle charging stations and smart grids.
Business license
High-tech enterprise certificate
ISO management system certification
Corporate honors
Product certification certificate
Product testing report
Company patent certificate
Well-known domestic partners
