Against the backdrop of large-scale application of DC power grids and accelerated iteration of new power systems, the instantaneous and destructive nature of DC faults places extreme requirements on protection devices. Today, our company officially launches the Intelligent Solid-State DC Circuit Breaker – a core rapid protection device tailor-made for DC distribution networks. With core advantages of microsecond-level response, arc-free operation and intelligent controllability, it breaks through technical limitations of traditional protection devices, providing comprehensive and highly reliable DC protection solutions for all-electric ships, new energy storage, industrial microgrids and other scenarios, empowering the high-quality development of DC power systems.
Product Overview
As a core rapid protection device for DC power grids, the intelligent solid-state DC circuit breaker is widely used in various DC distribution network scenarios, especially suitable for integrated power distribution systems of new all-electric drive ships. It can serve as a bus tie switch and feeder quick switch for multiple DC power grids, undertaking the key missions of fault isolation and system protection.
With outstanding core advantages, the product can flexibly realize precise protection for each DC sub-grid when a short-circuit fault occurs at any position of the DC system, preventing fault propagation. The total time for fault detection, judgment and execution of the circuit breaker reaches 10μs, far exceeding industry standards. It fundamentally reduces damage to equipment and systems, building a solid first line of defense for the safe and stable operation of DC power grids.
Core Features
- Intelligent and Controllable, Flexible Adaptation: Integrates semiconductor devices and digital control systems to achieve full-process intelligent control. Operating parameters can be flexibly adjusted according to actual working conditions to meet protection requirements of different scenarios, with convenient operation and strong adaptability.
- Ultra-Fast Response, Precise Breaking: Features microsecond-level breaking speed with 10μs full-process fault handling. It can complete cutoff before fault current rises to a peak, accurately control the breaking time, and minimize the fault impact range.
- Arc-Free Breaking, Safe and Reliable: Adopts pure electronic arc-free switching technology, completely eliminating arc hazards of traditional mechanical circuit breakers, avoiding arc ablation and insulation aging, greatly improving equipment operation safety and service life.
- Customizable Protection, Configurable on Demand: Protection time is flexibly adjustable, supporting operation based on preset current-time curves. Users can personalized configure multiple protection strategies such as overcurrent and short-circuit protection according to application requirements.
- Authoritatively Certified, Independently Controllable: Passed China Classification Society (CCS) certification, suitable for harsh marine environments. Core chips are 100% domestically produced, breaking foreign technological monopolies and ensuring supply chain security and stable product reliability.
Specification
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Item
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Specification
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Voltage Level
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1~10kVdc
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Rated Operating Current
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500~5000Adc
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Overall Efficiency
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> 99%
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Cooling Method
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Water-cooling or Air-cooling
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Operating Environment
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-20~50℃
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Maximum Breaking Current
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100kAmax
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Breaking Time
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10us~100us (Configurable/Optional)
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Auxiliary Power
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285Vac ~ 485Vac (3-phase + PE) / 24V
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Working Site
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Indoor
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Normal Operating Conditions
The product has passed strict environmental tests and can adapt to complex working conditions in various fields. Specific operating conditions are as follows:
- Altitude: ≤ 2000m; customized solutions available for plateau scenarios.
- Ambient Temperature: Operating range -40℃ ~ +60℃, resistant to extreme temperatures, suitable for outdoor, cabin and other environments.
- Relative Humidity: Daily average ≤ 95%, monthly average ≤ 90%, adaptable to high-humidity and high-salt marine environments.
- Vibration and Shock: Horizontal acceleration ≤ 0.5m/s², vertical acceleration ≤ 0.15m/s²; excellent anti-vibration and anti-shock performance for ships, rail transit and other bumpy scenarios.
- Installation Environment: Free from corrosive gases, flammable and explosive dust and strong electromagnetic interference; installation inclination ≤ 3°, can be flexibly installed in cabinets, cabins, outdoor supports and other locations.
- Grid Conditions: Suitable for DC voltage levels 200V ~ 15kV, rated current 100A ~ 5000A; customizable according to user grid parameters.
Core Application Scenarios
With excellent performance and wide adaptability, the intelligent solid-state DC circuit breaker is deeply applied in key fields, providing customized protection solutions for various scenarios:
- Integrated Power Distribution Systems of New All-Electric Drive Ships (Core Scenario)：Mainly used in integrated power distribution systems of all-electric ships (cruise ships, cargo ships, etc.) as bus tie and feeder switches. It withstands harsh marine environments, complies with CCS certification, quickly isolates short-circuit faults and ensures stable operation of ship power systems.
- New Energy Storage Power Stations：Suitable for DC-side circuits of various energy storage power stations as core short-circuit and overcurrent protection. 10μs ultra-fast response cuts off faults to prevent thermal runaway of batteries and improve the safety and reliability of energy storage systems.
- Industrial DC Microgrids：Applied in industrial DC microgrids such as steel and chemical industries as grid interconnection and load protection switches. Arc-free characteristics avoid potential safety hazards and ensure continuous and stable industrial production.
- Rail Transit DC Power Supply Systems：Used in DC power supply systems of subways, light rails and other rail transit, quickly isolating faults with anti-interference and anti-vibration performance to ensure safe operation.
- High-End Electronics and Data Centers：Adapted to high-voltage DC power supply systems of data centers and AI computing centers, featuring arc-free, low-noise and low-loss operation to ensure stable performance of core computing infrastructure.
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