220V DC Power Supply Panel

Product Overview

The 220V DC power supply panel is a core DC power supply assembly designed for high-end scenarios such as high-voltage power systems, large-scale industrial automation, and rail transit. It is suitable for AC 50/60Hz, input voltage AC 380V (three-phase) / 220V (single-phase), and provides a stable output of 220V DC. Its main function is to efficiently convert AC power into high-voltage DC power, providing uninterrupted, high-precision DC power supply to high-voltage loads such as high-voltage circuit breaker operating mechanisms, relay protection devices, PLC control systems, signal systems, and emergency lighting. As the "power core" of high-voltage distribution systems, it is widely used in 110kV and below substations, power plants, large data centers, communication hubs, petrochemical DCS control systems, rail transit control centers, and high-voltage distribution rooms of large industrial and mining enterprises. It ensures stable operation of high-voltage core equipment under extreme conditions such as grid fluctuations and sudden power outages, preventing equipment failure, grid paralysis, or production shutdowns caused by power supply interruptions, thereby reducing major economic losses.

This product adopts fully digital control technology and a high-frequency soft-switching architecture, integrating a high-efficiency charging module, large-capacity battery bank, intelligent monitoring unit, and high-voltage distribution unit. It optimizes high-voltage power conversion efficiency and output stability, allowing flexible configuration of the number of charging modules and battery capacity. It features intelligent charging management, remote monitoring, fault self-diagnostics, and redundancy backup, effectively addressing pain points such as unstable high-voltage DC voltage, insufficient backup time, inconvenient maintenance, and high safety risks. It achieves precise control, high efficiency, energy savings, safety, and reliability for high-voltage DC power supply. Parallel expansion capability meets the power supply demands of large loads and long-duration backup scenarios.

The product strictly complies with national and industry standards such as DL/T 5044-2014 "Technical code for design of DC power system for power engineering" and GB/T 19826-2014 "DC power supply equipment for electric power", and has passed CCC and ISO9001 certifications. It uses first-tier domestic brand high-voltage components, with the core charging module adopting third-generation silicon carbide (SiC) power devices. The entire production process undergoes full quality inspection. The protection level can reach IP30 or above, featuring excellent dust resistance, foreign object resistance, and creepage prevention. Suitable for indoor installation environments such as equipment rooms and high-voltage distribution rooms, it ensures long-term stable service and meets the stringent requirements of various high-voltage core equipment for uninterrupted 220V DC power supply.

Operating Environment

1.   Ambient temperature: -20℃ to +50℃, 24h average temperature ≤ +35℃. Suitable for most industrial equipment rooms and high-voltage substations. Customizable for special conditions from -30℃ to 60℃ to meet different regional temperature differences, ensuring stable startup at low temperatures and normal heat dissipation and operation at high temperatures.

2.   Altitude: ≤ 2000m (standard). Custom optimization available for high-altitude areas to meet the needs of high-altitude mountain substations and communication hubs, avoiding the impact of high-altitude environments on high-voltage power supply stability.

3.  Relative humidity: ≤90%. Anti-condensation and dehumidification functions adapt to humid, rainy seasons, and coastal high-humidity environments, preventing internal high-voltage components from moisture aging and creepage short circuits, ensuring high-voltage power supply safety.

4.  Pollution degree: Level 2. Resists dust and foreign object contamination in equipment rooms. Suitable for indoor clean installation environments. Customizable enhanced dust-proof and anti-corrosion designs for special industrial pollution scenarios such as chemical industrial parks.

5.  Installation inclination: ≤5°. Can be stably installed on the floor or dedicated brackets, adapting to standard installation layouts in equipment rooms and high-voltage distribution rooms, meeting the installation requirements of substations, large data centers, and other scenarios.

6.  Environment: Indoor installation, no corrosive gases, no conductive dust, no flammable or explosive hazards. Resists mild vibration. Whole unit noise < 55dB, quiet operation without affecting the surrounding environment of duty rooms and equipment rooms. Suitable for unattended high-voltage distribution scenarios.

Technical Parameters

Product Features

1. High-Voltage High-Efficiency Conversion, Energy Saving
The core charging module uses third-generation silicon carbide (SiC) power devices and high-frequency soft-switching technology, optimized for 220V high-voltage output. Full-load conversion efficiency reaches up to 95.5%, saving more than 8% energy compared to traditional modules. A single module saves over 4,000 kWh annually, helping enterprises achieve green and low-carbon transformation. Wide voltage input design (AC 85–340V) adapts to grid fluctuations and unstable voltage conditions in remote areas, preventing equipment shutdown caused by abnormal input voltage and ensuring high-voltage DC power supply continuity, meeting the demanding power supply requirements of high-voltage loads.

2. High-Precision High-Voltage Output, Suitable for High-Voltage Loads
Output voltage accuracy ≤ ±0.3%, ripple factor ≤ 0.10%, providing clean and stable 220V high-voltage DC power to meet the stringent power quality requirements of high-voltage precision equipment such as high-voltage circuit breakers, relay protection devices, and PLCs, preventing equipment misoperation, high-voltage component damage, or grid faults caused by voltage instability. Output voltage is continuously adjustable from 180–260V, compatible with different brands of large-capacity battery banks, flexibly adapting to various high-voltage power supply scenarios.

3. Intelligent Charging Management, Extends Battery Life
Features intelligent three-stage charging management (constant current, constant voltage, float charge) with optimized charging algorithms for 220V high-voltage batteries. Combined with battery temperature compensation algorithm (-4mV/℃·2V), it prevents overcharging or undercharging that can cause battery swelling or capacity degradation, extending battery service life to more than 5 years. Supports parallel operation of multiple charging modules with automatic current sharing (current distribution error ≤ ±3%), preventing individual module overload and improving high-voltage power supply system reliability, adapting to large-capacity load power supply requirements.

4. Multiple High-Voltage Protections, Safe and Reliable
Built-in five-level protection mechanism of "prevention-monitoring-protection-recovery-diagnosis" ensures comprehensive high-voltage power supply safety: Input side features overvoltage, undervoltage, phase loss, surge suppression, and lightning protection (8/20μs 10kA impulse current). Output side features high-voltage overvoltage lockout, undervoltage alarm, overcurrent current limiting, short-circuit foldback, and reverse battery polarity protection, effectively preventing safety risks such as high-voltage electric shock and short circuits. Temperature protection uses NTC temperature sensors and intelligent temperature-controlled fans. Strong cooling starts at ≥85℃, derated operation at ≥95℃ to prevent thermal runaway. A single module fault is automatically isolated without affecting other modules, supporting N+1 redundancy to avoid high-voltage power supply interruptions.

5. Intelligent Monitoring, Convenient Maintenance
Integrated intelligent monitoring unit with standard RS485/CAN bus interface supports Modbus RTU/TCP protocols for seamless connection to high-voltage power monitoring systems, enabling "four remote" functions (remote measurement, remote signaling, remote adjustment, remote control). Remote viewing of operating parameters such as high-voltage voltage, current, and temperature, parameter setting, and fault alarms. Equipped with a high-definition display panel for intuitive display of equipment status and fault codes, helping maintenance personnel quickly locate high-voltage power supply issues. Supports hot-swappable function, allowing faulty modules to be replaced without power interruption, reducing high-voltage system downtime and lowering maintenance risks.

6. Modular Design, Easy Expansion
Modular layout with charging modules, monitoring unit, high-voltage distribution unit, and battery bank in separate zones, ensuring neat wiring and easy maintenance and expansion. The number of charging modules and battery capacity can be flexibly configured based on high-voltage load requirements. Supports parallel expansion up to 160A to meet future load growth without requiring reconstruction. Standard 19-inch rack-mount design allows easy installation in standard high-voltage distribution cabinets, saving equipment room space, especially suitable for space-constrained high-voltage distribution room retrofit projects.

7. High-Quality Materials, Durable and Long-Lasting
The enclosure is made of high-quality cold-rolled steel, phosphated and electrostatic spray-coated, providing corrosion resistance, rust prevention, wear resistance, and high mechanical strength to withstand mild vibration and impacts from foreign objects inside equipment rooms. Internal high-voltage components are from first-tier brands such as CHINT and Delixi, offering stable performance, low failure rates, and excellent high-voltage insulation properties. Protection levels up to IP40 effectively prevent dust and foreign object ingress, suitable for long-term high-voltage equipment room operation. The entire unit has a service life of more than 15 years, reducing equipment replacement and maintenance costs.

Core Values

1. Provides high-precision, uninterrupted 220V high-voltage DC power supply to ensure stable operation of core high-voltage loads such as high-voltage circuit breakers and relay protection devices, preventing equipment failure, grid paralysis, or production shutdowns caused by power supply interruptions, reducing major economic losses

2. High-efficiency power conversion and intelligent energy-saving design significantly reduce high-voltage power supply energy consumption, helping enterprises achieve green and low-carbon transformation and reduce long-term operating costs.

3.Intelligent charging management and multiple high-voltage protection mechanisms extend battery life, improve high-voltage power supply system reliability, reduce equipment failure rates and maintenance risks.

4.  Modular, expandable design flexibly adapts to different high-voltage load scales. Easy later expansion without full system modification, reducing initial investment and future upgrade costs.

5.   Intelligent remote monitoring and convenient maintenance design enable unattended high-voltage power supply operation and preventive maintenance, reducing manual inspection costs, improving maintenance efficiency, and enabling rapid fault response.

6.Complies with national industry standards and compliant design, easily passing high-voltage power engineering acceptance. Suitable for various high-voltage distribution projects and industrial automation projects, supporting smart grid and industrial digital transformation.

Our Advantages

1.  Fast selection and quotation. Familiar with 220V high-voltage DC power supply scenarios. Provide customized 220V DC power supply panel solutions based on user high-voltage load scale, backup time requirements, and installation environment, precisely matching the needs of different high-voltage scenarios such as substations and large data centers.

2.  Standardized production. Core charging modules use third-generation SiC power devices and first-tier brand high-voltage components. Advanced production processes and full quality inspection. Fastest delivery in 20 working days, ensuring high-voltage power engineering project schedules.

3.  Full technical support: high-voltage installation guidance, wiring commissioning, operation and maintenance training, and rapid after-sales maintenance. 24-hour emergency response mechanism. Nationwide spare parts arrival within 48 hours. Localized service network coverage, quickly resolving high-voltage equipment operation and installation issues.

4.  Passed CCC, ISO9001, and other authoritative certifications, complying with national standards such as DL/T 5044-2014. Product quality is guaranteed with stable and reliable operation. Successfully applied in multiple 110kV substations, large data centers, and rail transit projects.

5.  Output current, battery capacity, monitoring functions, and cabinet dimensions can be customized as needed, providing stronger adaptability to meet various personalized 220V high-voltage DC power supply requirements, balancing practicality and economy.

Ordering Guidelines

Please provide the following information when ordering:

1.  Application scenario (substation/data center/industrial automation, etc.), input voltage (three-phase 380V / single-phase 220V), and rated output current requirements.

2.  Battery capacity, backup time requirements, number of charging modules required, and whether parallel expansion is needed.

3.  Installation method, protection level, cabinet size requirements, and whether standard 19-inch rack compatibility is required.

4.  Monitoring function requirements (remote communication, fault alarm, "four remote" functions, etc.) and special high-voltage protection requirements.

5.  Usage environment (low temperature/high humidity/high altitude, etc.), output voltage adjustment, redundancy backup, and other customization requirements.