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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
BY194U-D*4 High Precision LED Three Phases Voltmeter for Accurate Readings
Specification of BY194U-D*4 Three-Phase Voltmeter
| Model | BY194U-D*4 Three-Phase Voltmeter |
| Working 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 |
| Working Environment Situation | Dependably operates within a temperature range of -10°C to 50°C, suitable for diverse environments |
| Storage Environment Situation | 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 BY194U-D*4 Three-Phase Voltmeter
Multi functional power monitoring instrument is a power monitoring instrument that integrates data acquisition and control functions, suitable for power systems of various voltage levels. This series of instruments can replace various meters, relays, transmitters, and other components. The instrument comes standard with RS485 communication and can achieve a maximum communication speed of 1.5Mbps by expanding Profibus communication, fully meeting the real-time data acquisition needs on site; Can accurately measure up to 63 harmonics; Users can achieve remote monitoring through software. The instrument is designed with humanization, and the terminals adopt a plug and play connection method, which is convenient for on-site wiring and maintenance; Provide multiple flexible and configurable expansion modules. This instrument has been widely used in various industries.
The BY194U-D*4 Three-Phase Voltmeter by BaoYu Holdings is a multifunctional power instrument designed to optimize power system quality in Three Phase grids and global applications. Equipped with a high-resolution three-row LED display, it accurately measures three-phase voltage, phase voltage, neutral point status, and phase difference in three-phase alternating current systems. Compatible with industry standards like the Unipower power quality meter and Dranetz power quality analyzer, this device acts as a robust three-phase power analyser, capturing real-time power quality data to detect harmonic distortion electrical (THD) and imbalances, enabling harmonic discovery and corrective voltage compensation in power systems.Ideal for global Three Phase Grid Suppliers and Three Phase Low Voltage Factory environments, it ensures compliance with power quality and distribution standards while enhancing three-phase electric power quality. Its advanced analytics support harmonic system diagnostics, aiding in the protection of low voltage electrical networks and improving the power of quality for industrial operations.
BY194U-D*4 provides deep insights into three-phase voltage stability and power quality, helping users implement corrective measures (such as reactive power compensation or harmonic filtering) to improve system efficiency, reduce energy waste, and extend equipment life. Its rugged construction and user-friendly interface make it an indispensable tool for industries that value three-phase power quality optimization and compliance with international electrical standards.
Working Principle of BY194U-D*4 Three-Phase Voltmeter
1.BY194U-D*4 High Precision LED Three-Phase Voltmeter is designed for accurate real-time monitoring and analysis of three-phase voltage systems in industrial, commercial and renewable energy applications. This advanced three-phase voltmeter works by measuring the voltage parameters of all three phases (L1, L2, L3) of the three-phase AC power system, ensuring accurate detection of phase voltage, line voltage and phase difference, thereby optimizing the three-phase power quality.
2.At the heart of the device are high-precision voltage sensors and a microcontroller-based processing unit. The sensors capture the instantaneous voltage value of each phase, while the microcontroller calculates key indicators such as phase voltage imbalance, phase displacement angle, and voltage fluctuation. By analyzing the phase difference between the three-phase AC power, the voltmeter can identify deviations that may indicate problems such as harmonics, voltage sags/swells, or degradation of three-phase power quality. The integrated LED display clearly displays real-time voltage readings (phase-to-phase and phase-to-phase), frequency, and three-phase power quality parameters such as total harmonic distortion (THD) and imbalance rate.
3.To ensure reliability, the voltmeter uses advanced algorithms to filter out electrical noise and transient interference, ensuring measurement accuracy even in harsh environments. Its design complies with global power quality monitoring standards, enabling users to diagnose inefficiencies in three-phase AC power systems, such as excessive reactive power or harmonic pollution. In addition, the device supports communication protocols such as RS485 and Modbus, and can be integrated into smart grids or IoT-based energy management systems to achieve active circuit protection and harmonic suppression.
Product Advantages of BY194U-D*4 Three-Phase Voltmeter
Real-time three-phase voltage monitoring：Accurately measure three-phase voltages (phase-to-phase and phase-to-phase) with ±0.2% accuracy, ensuring reliable three-phase AC system diagnostics for industrial and commercial applications.
Advanced phase difference analysis：Detect phase imbalance and phase difference deviation (0.1° resolution) to optimize three-phase power quality and prevent equipment damage due to voltage asymmetry.
Comprehensive power quality indicators：Tracks three-phase power quality parameters including harmonic distortion, voltage sag/swell, and reactive power to support energy 、efficiency .
Dual display of phase voltage and line voltage：The high-brightness LED screen displays both phase voltage (per phase) and line voltage simultaneously, making it ideal for real-time troubleshooting of three-phase AC systems.
Rugged design for harsh environments：Industrial-grade components are used to withstand voltage fluctuations (up to 600V) and EMI interference, ensuring durability in three-phase electrical installations.
Seamless integration with smart grid：Compatible with IoT-enabled circuit protection systems to enable remote monitoring and data logging for proactive power quality management and energy optimization
Product Wiring Method
Product Size Informations
| Model | A1 | A2 | Hole opening size |
| BY194U-D*4 Three-Phase Voltmeter | 48mm | 48mm | 45×45mm |
Applications of BY194U-D*4 Three-Phase Voltmeter
Commercial Building Energy Management
Large commercial complexes require precise power system quality monitoring to avoid costly blackouts. The BY194U-D*4’s three-row LED display provides an intuitive view of phase voltage and neutral point status, and its harmonic system diagnostics detect issues such as transformer overheating or capacitor bank failure. By syncing with the Unipower power quality meter network, it generates actionable power quality data to optimize HVAC systems, lighting, and data centers. For global operators and Chinese three-phase grid providers, this tool enhances the role of quality in energy efficiency, thereby reducing operating costs and carbon footprint.
Smart grid upgrades and infrastructure monitoring
For power companies modernizing their aging grids, the BY194U-D*4 supports harmonic discovery and three-phase AC power analysis in smart grid deployments. It can monitor three-phase lines in China and global power grids, identifying phase differences and voltage sags that affect power quality and distribution.
Renewable Energy Integration and Grid Stability
Solar farms and wind turbines often face the problem of unbalanced three-phase AC power due to intermittent power generation. BY194U-D*4 can be used as a three-phase analyzer to track three-phase power supply voltage fluctuations and provide power quality data to stabilize grid connection. It is integrated with the Dranetz power quality analyzer protocol to achieve seamless voltage compensation in the power system, thus solving low-voltage electrical problems in remote facilities. It is very suitable for three-phase low-voltage plant systems or hybrid energy systems, which can improve power quality and distribution reliability, and ensure the smooth access of renewable energy to China's three-phase power grid or the global power grid.
Storage Workshop
Production workshop
Workshop Vedio
Baoyu Holding Co., Ltd.
Baoyu Holding Co., Ltd. specializes in the production of intelligent fully controlled power quality products, including active power filters, static VAR generators, intelligent capacitors, power capacitors, reactive compensators, composite switches, capacitor contactors, thyristor switches, reactors, etc. The company's products have won the favor of the global market with their excellent quality and are exported to more than ten countries in Europe, America, Southeast Asia and the Middle East. The products are widely used in factories, petrochemicals, coal mines, metallurgy, ships, airports, solar and wind power generation and other fields of reactive power compensation and harmonic control. The company's products have been successfully operated for a long time in many key projects across the country.
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.
Baoyu Holdings Limited's capacitor storage facility uses an advanced temperature and humidity control system and is equipped with a fully automated storage system that uses an innovative shelf solution to achieve three-dimensional, high-density and safe storage of capacitor units. The new storage facility increases storage capacity by 200% and is equipped with professional testing equipment with integrated fire alarms and dust/anti-static measures, effectively eliminating the risk of oxidation or product loss. In addition, we also monitor parameter stability through monthly sampling.
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.
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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