DC Power Supply Panel （48V 110V 220V）
Product Overview
The German BEINING BN series intelligent high-frequency switching DC power panel is a DC operation power solution specifically designed for power systems. This series adopts modern high-frequency switching rectifier technology combined with an intelligent monitoring unit, providing reliable DC power for switchgear, protective relay devices, signal systems, and emergency lighting in power plants, substations, switching stations, and distribution rooms. The BN series represents the next-generation product for DC operation power in power systems and is one of BEINING's core product lines.
The BN series is built on a modular design concept. The rectifier modules employ high-frequency switching topology with DSP digital control technology, achieving high efficiency, high power density, and high reliability for DC power output. The intelligent monitoring unit provides unified management and scheduling of the entire system, enabling automatic battery charge/discharge management, status monitoring, and fault alarms, fully supporting unattended operation.
Product Application Fields
The BN series DC power panels are mainly used in the following scenarios:
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Power Plants and Substations: Provides DC operation power for switchgear and protection devices in thermal power plants, hydroelectric plants, nuclear power plants, and various substations
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Switching Stations and Distribution Rooms: Suitable for distribution automation terminals, intelligent switching stations, residential distribution rooms, etc.
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Industrial and Mining Enterprises: Captive substations and distribution rooms in metallurgy, mining, petroleum, chemical, and other industries
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Rail Transit: Signal power and operation power for railway traction substations and subway main substations
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Large Buildings: Power distribution rooms in airports, hospitals, high-rise buildings, data centers, etc.
Core System Components
The BN series DC power panel has a comprehensive system architecture, typically consisting of the following components:
Rectifier Charging Module
High-frequency switching rectifier modules convert input AC power to stable DC power. Modules are configured with N+1 redundancy to ensure normal system operation even if a single module fails. Modules support hot-swappable replacement online without system power interruption, greatly improving system availability and maintainability.
Intelligent Monitoring Unit
Featuring a microprocessor core with LCD Chinese character menu display and operation buttons. It enables system parameter configuration, operation parameter display, fault indication, and system calibration, with comprehensive automatic battery management functions. It supports four-remote functions and can seamlessly integrate with power station automation systems.
Voltage Drop Silicon Chain Unit
Provides automatic voltage drop functionality, adjusting the closing bus voltage to the voltage required by the control bus, ensuring stable control bus voltage.
Battery Bank
As the energy storage unit, batteries can be configured as lead-crystal, AGM, or gel batteries according to requirements, with capacity covering a complete range from 7Ah to 3000Ah.
Feeder Unit
Includes output switches, fuses, and status indicators for closing and control circuits, distributing DC power to various electrical devices.
Technical Specifications
AC Input Characteristics
| Parameter | Specification |
|---|---|
| Input Configuration | Three-phase four-wire |
| Input Voltage | AC 380V ± 20% |
| Input Frequency | 50Hz ± 10% |
| Power Factor | ≥ 0.93 |
DC Output Characteristics
| Parameter | Specification |
|---|---|
| Nominal Output Voltage | 110V DC / 220V DC (24V/48V optional) |
| Voltage Adjustment Range | 90-143V / 180-286V continuously adjustable |
| Voltage Regulation Accuracy | ≤ ±0.5% |
| Current Regulation Accuracy | ≤ ±0.5% |
| Ripple Coefficient | ≤ 0.2% |
| Efficiency | ≥ 94% |
| Output Current Range | 5A - 200A |
| Battery Capacity Range | 38Ah - 3000Ah |
Protection and Alarm Functions
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Output overvoltage and undervoltage protection
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Output overcurrent and short circuit protection
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Reverse connection, overcharge, and over-discharge protection
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AC input overvoltage, undervoltage, phase loss, and power failure alarm
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Bus insulation degradation alarm
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Module overtemperature protection
Core Functional Features
Intelligent Battery Management
The BN series features comprehensive automatic battery management. The system automatically completes the charging process based on battery status—automatically entering boost charge mode after undervoltage to quickly restore capacity, and automatically switching to float charge mode after reaching the set threshold to maintain full charge status. An optional battery temperature sensor automatically adjusts charging voltage based on ambient temperature—reducing voltage at high temperatures to prevent thermal runaway and increasing voltage at low temperatures to ensure adequate charging.
Modular N+1 Redundancy Design
Rectifier modules adopt N+1 hot standby configuration. When any module fails, the remaining modules automatically increase output current to compensate for total output, ensuring uninterrupted system power supply. Failed modules can be hot-swapped and replaced online without affecting system operation.
Comprehensive Monitoring and Communication
Equipped with a local monitoring unit, it displays real-time parameters such as system voltage, load current, and battery status. It supports MODBUS, IEC 60870-5-104, and other standard communication protocols via RS232/RS485 interfaces, enabling remote measurement, control, adjustment, status monitoring, and fault alarms, meeting the requirements of unattended substations.
High Reliability Design
Dual AC input automatic switching ensures uninterrupted power supply to the charger. Surge protection modules are configured on the system input side to effectively prevent damage from lightning overvoltage. Comprehensive electrical insulation protection ensures operator safety.
Operating Environment Requirements
| Parameter | Specification |
|---|---|
| Operating Temperature | -5℃ to 45℃ (Extended models: -40℃ to 60℃) |
| Relative Humidity | ≤ 90%, non-condensing |
| Altitude | ≤ 2000m |
| Protection Rating | IP30 (Higher ratings available) |
Certifications and Standards
The BN series products comply with the following standards and certifications:
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GB/T 19826-2014 General technical conditions and safety requirements for DC power supply equipment in power engineering
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IEC 62040 relevant standards
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CE Certification
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ISO 9001 Quality Management System Certification
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ISO 14001 Environmental Management System Certification
Quality and Service
The BN series is manufactured under a strict quality management system. All products undergo comprehensive functional testing and burn-in testing before leaving the factory. BEINING provides full lifecycle services from product selection, engineering design, installation and commissioning, to after-sales maintenance.