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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
BY 340 Series Intelligent Controller, Equipped with an LCD Display Switchgear Control Panel with RS485
Model Meaning
Main Specifications of BY-340 Intelligent Controller for Switchgear
| Model | BY-340 | |
| Display method | / | |
| Working voltage | AC/DC:80V~270V | |
| Operation temperature limit | -5℃~+50℃ | |
| Working temperaturelimit | -10℃~+55℃ | |
| Relative humidity | Not evceed 93% | |
| Maximum power consumption | Not evceed 6W | |
| Overall dimensions (L x W x H) | 200×139×32mm | |
| Net weight | 0.5kg | |
| Temperature parameters | Range | -20℃~+100℃ |
| Accuracy | 1℃ | |
| Low temperature heating start temperature | 5℃ | |
| Temperature rise heating exit temperature | 13℃ | |
| High temperature exhaust starting temperature | 40℃ | |
| Exit exhaust temperature when temperature drops | 25℃ | |
| Response time | Not evceed10s | |
| Humidity parameters | Range | 1%~99%RH |
| Accuracy | 3%RH | |
| Excessive humidity during heating start-up | 85% | |
| Excessive humidity drops and heating exits humidity | 75% | |
| Response time | ≤10s | |
| Response time | ≤10s |
Product Introduction of BY - 340 Intelligent Switchgear Controller
The BY 340 Series Intelligent Controller, developed by BaoYu Holdings Limited, is a state-of-the-art solution for optimizing Electrical Switchgear and Switchgear Equipment, including Gas Insulated Switchgear (GIS), 11kV Switchgear, and Remanufactured Switchgear systems. Equipped with an intuitive LCD display and RS485 connectivity, it delivers precise control over voltage, current, frequency, and harmonic distortion, ensuring superior Power Quality and circuit protection. Designed for compatibility with leading brands like Chint Switchgear, BMC Switchgear, and Siemens DC Switchgear, it supports reactive power compensation, three-phase balancing, and seamless integration with Industrial Motor Controllers, making it ideal for high-voltage applications such as 11kV GIS Switchgear and EHV Switchgear.
Built for resilience, the BY 340 Series features an IP65-rated enclosure and operates reliably in extreme temperatures (-30°C to 70°C). Its advanced algorithms enable real-time harmonic analysis (up to 50th order), adaptive frequency stabilization, and rapid fault detection, critical for Emergency Switchgear scenarios and Dynamic Switchgear environments. The controller’s modular design ensures compatibility with both modern Control Gear and Switchgear networks and legacy systems, including Used Electrical Switchgear for Sale, offering a cost-effective upgrade path for facilities prioritizing energy efficiency and compliance with standards.
Trusted by global partners like Eagle Nest Elect Switchgear Ind LLC and Dorman Switchgear, the BY 340 Series bridges innovation and practicality, serving industries from manufacturing to renewable energy. It enhances Electrical Switchgear and Protection infrastructures by reducing operational costs through optimized power factor correction and smart grid readiness. Whether deployed in Central Switchgear hubs, Domestic Switchgear setups, or specialized systems like Bil Switchgear and EMI Switchgear, this controller ensures reliability, scalability, and compliance—positioning it as the ultimate choice for modern energy management challenges.
Main Functions of BY - 340 Intelligent Switchgear Controller
1. Circuit status monitoring
• The BY - 340 accurately displays the status of the primary circuit. It shows the open or closed status of the circuit breaker and is equipped with clear indicator lights for easy identification. For example, a green light indicates that the circuit breaker is in the closed position, and a red light indicates that the circuit breaker is in the open position. In addition, it can monitor the position of the trolley switches, such as whether they are in the working position, test position or moving position.
• It also provides real-time information on the status of grounding switches and the energy storage status of related equipment. This comprehensive monitoring helps operators quickly assess the operating status of the electrical system and make timely decisions.
2.Environmental parameter control
• The BY - 340 is equipped with advanced sensors that monitor the temperature and humidity inside the switch cabinet. Once the detected values deviate from the preset optimal range, the control panel can automatically initiate corresponding control measures. For example, if the temperature is too high, the control panel can start the cooling fan; if the humidity exceeds the limit, the control panel can start the dehumidifier.
• It can also control other environment-related functions, such as cabinet lighting. Lighting can be set to automatically switch on when a cabinet door is opened or at specific time intervals, improving visibility for maintenance and inspection work.
3. Communication and Connection
• The BY - 340 is equipped with an RS-485 communication interface, which enables seamless data exchange with other intelligent devices in the power system. The panel can transmit the collected circuit status and environmental parameter data to the central control station, enabling remote monitoring. The operator at the central control station can issue instructions to the BY - 340, such as controlling the opening and closing of circuit breakers or adjusting environmental control settings.
• It can be integrated into a larger Supervisory Control and Data Acquisition (SCADA) system, thereby improving the overall management and operational efficiency of the distribution network.
Working process of BY - 340 Intelligent Switchgear Controller
BY-340 series intelligent controller with LCD display is an intelligent control device designed for switch cabinet control panel and high-voltage cabinet control system. Its workflow integrates advanced monitoring, analysis and adaptive protection functions to optimize circuit performance and ensure reliable power distribution:
1. Real-time data collection：Circuit current, voltage levels and power quality parameters (e.g. harmonics, phase imbalance) are continuously monitored through embedded sensors. The data is displayed on an LCD screen, giving users instant insight into grid conditions.
2. Intelligent analysis and adjustment： Detects abnormal conditions such as harmonic distortion or three-phase imbalance using intelligent algorithms. Automatically triggers reactive power compensation and harmonic suppression to stabilize voltage and balance loads, thereby reducing energy loss by up to 15%.
3. RS485 communication and remote control：Adopt RS485 Modbus protocol to transmit real-time data to SCADA system or intelligent switch cabinet network. Support long-distance communication (up to 1.2km), strong anti-interference ability, and can realize centralized control and remote parameter adjustment of high-voltage cabinet control equipment.
4. Adaptive protection mechanism：Dynamically adjust overcurrent protection and undervoltage/overvoltage thresholds based on grid load conditions. Instantly isolate faults (e.g. short circuit, insulation fault) to prevent equipment damage and ensure compliance with Standard.
5. User interaction via LCD interface：Operators can configure settings (e.g., switchgear control logic, protection schemes) directly through the LCD display. The interface provides diagnostics, fault logs, and maintenance alerts to simplify troubleshooting of circuit protection systems.
6. System Integration and Scalability：Seamlessly integrate with existing switchgear controllers and IoT platforms. Supports multi-device synchronization in large-scale power grids, providing a scalable solution for industrial current/voltage monitoring and high-voltage cabinet controller.
Dimensions of BY-340 Intelligent Controller for Switchgear
Product Wiring Diagram
When conducting a high voltage test greater than twicethe nominal voltage,it is necessary to first short circuit thesecondary wire of the high voltage live sensor to the groundAfter the hiah voltage test is completed, the secondary wireand ground wire of the high voltage live sensor can beconnected to the corresponding wiring terminals to preventabnormal hiah voltage damage to the device
Manufacture High - Quality Products with Dedication
Industrial-grade durability and advanced component integration
The BY-340 series intelligent controller is designed for high-voltage cabinet control. It adopts a sturdy die-cast aluminum alloy housing (IP65 protection grade) to effectively resist corrosion, dust and extreme temperatures (-40°C to +85°C). Its switch cabinet control panel integrates military-grade circuit protection components, including arc-extinguishing contacts and silver-nickel alloy conductors, which can withstand surge currents up to 10kA and maintain stable current/voltage monitoring under high voltage conditions. The LCD display uses anti-glare tempered glass (hardness 7H) and a capacitive touch interface, which can operate seamlessly in harsh environments such as substations or factories. The intelligent controller uses dual redundant microprocessors and 16-bit AD converters inside, and the accuracy of harmonic detection and three-phase unbalance correction is as high as 0.5%, far exceeding the IEC 61000-4-30 standard. The enhanced RS485 communication port with gold-plated connector ensures uninterrupted data transmission over 1.2 kilometers, which is essential for long-distance switch cabinet controller networks.
Intelligent thermal management and EMI/RFI shielding
To optimize the reliability of the high-voltage cabinet control system, BY-340 adopts a multi-layer PCB design with a built-in copper heat sink and ceramic-coated MOSFET, which reduces thermal resistance by 30% compared with traditional models. This intelligent switch cabinet architecture actively monitors circuit temperature through negative temperature coefficient (NTC) sensors and dynamically adjusts the cooling fan speed to maintain optimal working conditions, thereby extending the service life of components by 40%. The housing adopts EMI/RFI shielding (tested to attenuate up to 100dB) to protect sensitive current/voltage monitoring circuits from electromagnetic interference commonly found in industrial power grids. In terms of circuit protection, the design uses gas discharge tubes (GDTs) and varistors arranged in a star topology grounding system to ensure rapid release of transient voltages (up to 6kV) while minimizing harmonic feedback. In addition, the modular design of the switch cabinet control panel allows hot-swappable reactive power compensation modules, allowing maintenance without system shutdown-this is critical for mission-critical high-voltage cabinet control equipment.
User-centered modular design and scalability
The BY-340's intelligent control architecture focuses on flexibility, using a plug-and-play modular framework that supports customization for a variety of switch cabinet controller applications. Its LCD display interface is equipped with an ARM Cortex-M7 processor, which displays circuit current, voltage waveforms and harmonic distortion levels (THDi <3%) in real time through an intuitive graphical user interface (GUI). The intelligent control device contains hot-swappable I/O cards and can be expanded to integrate with RS485 Modbus, Profibus or Ethernet/IP networks, making it compatible with traditional and modern high-voltage cabinet control systems. The internal self-diagnostic circuit equipped with Hall effect current sensors and optical isolation relays ensures fail-safe operation and automatically isolates faults to protect downstream equipment. The design also uses flame-retardant PC+ABS composite boards (UL94 V-0 certified) and silicone sealing gaskets to prevent arc flash from spreading in the switch cabinet control panel. To improve energy efficiency, the reactive power compensation module uses GaN (gallium nitride) transistors to reduce switching losses by 25% and respond faster to load fluctuations-ideal for dynamic three-phase unbalance correction in renewable energy grids.
Storage Workshop
Production workshop
Workshop Vedio
Baoyu Holdings Limited
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.
Our storage facility utilizes precision climate control, automated 3D warehousing (which increases capacity by 200%), and integrated safety systems (including fire suppression, anti-static protocols, and monthly audits) to maintain zero oxidation and ensure product integrity. In addition, our cleanroom manufacturing facility features a combination of natural and LED lighting, optimized workflows, and cross-trained technicians to enhance efficiency. Automated quality control systems and ISO-certified processes ensure compliance with dimensional and electrical standards, while AI-driven analytics and stringent protocols help achieve near-zero defects. By integrating advanced automation, tailored solutions, and steadfast reliability, Baoyu provides durable, mission-critical power systems, reinforcing our status as the preferred global partner for industries that require precision and innovation.
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