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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
Switchgea
Development Directions of Switchgear under New Quality Productive Forces
      Enhancing development quality and transitioning from the previous extensive economic growth model to intensive, high-quality development are equally crucial for the evolution of switchgear.         The switchgear industry suffers from severe homogenization, with low-quality products proliferating unchecked through simple repetition, competing solely on price and cost while neglecting quality. This approach consumes vast material resources without regard for sustainability, prioritizing short-term compliance over long-term reliability.
2025/09/09
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
technical knowledge More
Medium-Voltage-Switchgear
Type Testing of Medium Voltage Switchgear According to IEC Standards
Type testing of medium voltage switchgear in accordance with IEC standards may involve two scenarios: First, testing at domestic accredited testing stations in compliance with the IEC 62271 series standards, resulting in test reports that conform to IEC 62271. Second, testing at international STL (Short-Circuit Testing Liaison) testing stations according to IEC standards and STL guidelines.
2025/09/22
PV-Grid-Connected-Cabinet
Composition and Functions of a 400V PV Low-Voltage Grid-Connection Cabinet
A 400V PV Low-Voltage Grid-Connection Cabinet is a critical interface device that connects the photovoltaic (PV) power generation system to the low-voltage grid. It is a dedicated distribution panel integrating protection, monitoring, metering, and control functions. It is primarily composed of the following core components:
2025/09/11
Switchgear
Selection Standards for Standard Parts in Switchgear
Switchgear requires the use of many fastening standard parts such as bolts, nuts, washers, and rivets. It is essential to select appropriate standard parts based on different applications to ensure functional requirements are met while enhancing product safety and cost-effectiveness.
2025/09/02
Marine Switchgear
Medium Voltage Marine Switchgear Solution
  Incoming Line Configuration: Marine switchgear systems are powered by multiple diesel generators operating in parallel. Each incoming line must be equipped with voltage transformers for accurate voltage measurement on the supply side.
2025/09/01
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