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Marine Switchgear
High Voltage Shore Connection Cabinet

Scope of Application:The High Voltage Shore Connection (HVSC) System supplies shore power to ocean-going vessels (e.g., container ships, cruise liners, Ro-Ro) during port berthing. It replaces onboard auxiliary generators, enabling zero-emission operations and compliance with IMO regulations and international port environmental standards.

Rated Voltage:; Secondary: 6kV, 6.6kV, 10kV, 11kV ,13.8kV, 15kV (Per IEC 60038)
Frequency: 50Hz / 60Hz (Auto-sensing or configurable)
Rated Current: 200A–2500A (Tiered per power demand)
Short-Circuit Capacity: ≥25kA (IEC 62271-200 compliant)
Ingress Protection: IP56 (Dust-tight & powerful water jet protection)
Cooling Method: Forced Air (AN) or Natural Convection (AF)
Insulation Class: Class E or higher (IEC 60085)

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Marine Medium/High Voltage Switchboard
Marine Medium/High Voltage Switchboard

 Scope of Application :MV/HV Marine Switchboard operates ship and offshore power systems (0.4kV-15kV, 50/60Hz AC). It controls power distribution on main, emergency, and section boards, and protects large equipment like propulsion, thrusters, and pumps. It withstands harsh marine conditions including humidity, salt spray, vibration, and tilt.

Voltage Levels :3.3kV, 6.6kV, 7.2kV, 11kV, 12kV, 13.8kV, 15kV
Rated Current: 630A, 1250A, 1600A, 2500A, 4000A
Rated Short-Circuit Breaking Capacity (IEC 62271-100): 25kA, 31.5kA, 40kA, 50kA
Rated Short-Time Withstand Current (1s/3s): Matches breaking capacity ratings
IP Rating (IEC 60529): IP44 (indoor), IP56 (open deck)
Insulation Medium: Air-insulated (AIS) or SF₆ gas-insulated (GIS, for compact HV designs)

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Low-Voltage Marine Switchboard
440V/690V Low-Voltage Marine Switchboard

Product Introduction:440V/690V LV Marine Main Switchboards are the core power distribution equipment in ship electrical systems, compliant with IEC 60092 standards. The 440V system is common on medium/small vessels, while the 690V system is primarily used on large ships and offshore platforms – reducing cable cross-sections by >50% and significantly lowering line losses and installation costs.

Parameter : 440V System/690V System
Rated Voltage :440V AC ±10%/690V AC ±10%
Rated Frequency : 60Hz/50Hz/60Hz/50Hz
Rated Current: 800A-6300A/400A-5000A
Short-circuit Breaking Capacity (Icw) :50kA-100kA (1s)/65kA-150kA (1s)
Protection Class :IP44/IP56 (Front/Enclosure)/IP44/IP56
Ambient Temperature : -25℃~+55℃/-25℃~+55℃

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INDUSTRY NEWS More
Marine Switchboard
Marine Switchboard Market Share Analysis and Development Trend Analysis
Conclusion: European players maintain short-term dominance in premium segments, but Chinese manufacturers are rapidly gaining ground through cost and scale advantages. Future competition will center on smart functionalities, green compatibility, and modular innovation, with technological agility determining market repositioning.
2025/07/17
Switchgear
The market share of Chinese switchgear exported to Indonesia
China holds 60-70% of Indonesia's switchgear imports, led by cost-competitive LV/MV products. Key drivers: Indonesia's power demand growth (6-7%/year) and infrastructure projects. Challenges include local content rules (TKDN) and certification. Growth areas: renewables and smart grids. Chinese firms advance via tech upgrades and localized production.
2025/07/16
Control-Switchgear
Chinese-Developed Intelligent Power Distribution Switchgear Debuts at Munich Event
Munich, Germany – From June 24th to 27th local time, the 27th Laser World of Photonics was held at Messe München. ShengLong Electric showcased its self-developed AI-iPanel, the world's first artificial intelligence power distribution switchgear, attracting significant attention from global professionals.
2025/07/15
Fire-Rated Switchgear
Which places require Fire-Rated Switchgear?
Fire-Rated Switchgear (also known as Fire-Resistant Switchgear or Fire-Resistant Distribution Cabinets) are specially designed electrical enclosures. Their core function is to maintain the normal operation of internal electrical equipment for a specified duration (typically 30 minutes, 60 minutes, 90 minutes, or 120 minutes) during a fire, while preventing flames and hot gases from propagating through the enclosure to other areas. This provides critical time for personnel evacuation, firefighting operations, and the continued operation of essential equipment.
2025/07/14
technical knowledge More
Gas-Insulated Switchgear (GIS)
Gas-Insulated Switchgear (GIS) for High-Altitude Applications
For Gas-Insulated Switchgear (GIS), since the main live circuits are enclosed within sealed, gas-filled compartments and external connections utilize solid insulation, the insulation performance is unaffected by atmospheric pressure. The primary consideration for GIS at high altitudes is the mechanical strength of the gas enclosure (gas compartment).
2025/08/08
switchgear
What are the differences between IEC-standard switchgear and UL-standard switchgear?
IEC standard switchgear and UL standard switchgear (represented by UL1558 and UL891) fall under different technical systems in power systems, with differences mainly reflected in their standard frameworks, structural design, performance requirements, and applicable scenarios. The following is a comprehensive comparative analysis:
2025/08/08
Ring Main Unit
Technical Requirements and Specifications for 17.5kV Ring Main Units in the Saudi National Grid
SEC Specifications: 17.5kV Ring Main Unit (RMU) - Key Features         Outdoor Enclosure: Designed for outdoor installation.         Dedicated Cable Withstand Voltage Test Terminal Compartment: Features a separate, accessible compartment for cable high-potential (Hi-Pot) testing.         Self-Powered Protection Unit: Utilizes an internal power source for the protection relay.         SF6 Insulated, Single-Tank Design F+F+V Configuration: Common SF6 gas tank housing a combination of Load Switch (F) + Load Switch (F) + Circuit Breaker (V).         Ratings: Ring Switch Unit: 630A. Feeder Circuit Breaker: 200A.         Compliance Standard: SEC Standard 32-SDMS-11.
2025/08/08
Medium Voltage Switchgear
Medium Voltage Switchgear UL Standard Specifications
Switchgear destined for the North American market requires UL (Underwriters Laboratories) certification. UL is a U.S. safety certification organization. It develops its own standards, such as UL 891 (Dead-Front Distribution Switchboards), UL 67 (Panelboards), and UL 845 (Motor Control Centers), and also provides product certification services.
2025/08/07
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