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FZN25-12 series load switchgear
FZN25-12 series load switchgear

Scope of Application:The FZN25-12 is an indoor 12kV, 50Hz/60HZ three-phase AC high-voltage load switchgear. It fits power distribution systems in industrial plants, substations, commercial buildings and mines, mainly for load current switching, closed-loop operations, and controlling no-load transformer/cable charging currents. Ideal for RMUs, terminal power units and compact substations, it enables electrical distribution, control and protection.

Rated Voltage:15KV,12kV,11KV,10KV (compliant with IEC 60298)
Rated Current: Standard models: 630A (base type), 125A/200A (fuse-combination type)
Power Frequency Withstand Voltage: 42kV (r.m.s.) phase-to-earth/phase-to-phase; 48kV (r.m.s.) across isolation gap
Lightning Impulse Withstand Voltage: 75kV (peak) phase-to-earth/phase-to-phase; 85kV (peak) across isolation gap
Breaking Capacity:Active Load Current: 630A; Cable Charging Current: 10A; No-Load Transformer Capacity: 1600kVA; Fuse-Assisted Short-Circuit Breaking: 31.5kA

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KYN61-40.5 withdrawable AC metal-enclosed high-voltage switchgear

Scope of Application:The KYN61-40.5 is a switchgear for three-phase AC 50Hz systems (40.5kV). It provides power distribution, protection, and control in power plants, substations, and industries, especially where frequent operation or high reliability is needed, like data centers, metallurgy, and chemical plants.

Rated Voltage: 24kV, 33KV,36kV, 40.5kV).
Rated Current: 1250A, 1600A, 2000A, 2500A, 3150A.
Rated Short-Circuit Breaking Current: 25kA, 31.5kA, 40kA.
Rated Short-Time Withstand Current: 25kA/4s, 31.5kA/4s, 40kA/4s.
Protection Degree: Enclosure IP4X, Compartment IP2X.
Internal Arc Classification: IAC-AFLR 40kA/1s (IEC 62271-200).

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XGN17-40.5 fixed-type high-voltage switchgear
XGN17-40.5 fixed-type high-voltage switchgear

Scope of Application:The XGN17-40.5 is an indoor AC switchgear for 40.5kV systems (IEC 36kV level). Used in power plants, substations, and industrial facilities, it handles power reception, distribution, control, protection, and monitoring. It supports single-bus or single-bus with bypass configurations and is designed for critical operations needing high reliability.

Rated Voltage: 33KV,34.5KV,35KV,36KV
Rated Current: Main bus 1250A/1600A/2000A/2500A; Feeder bus 630A/1250A/1600A/2000A
Insulation Parameters: Power frequency withstand voltage 95kV (1min); Lightning impulse withstand voltage 185kV
Control Supply: DC 24V/48V/110V/220V; AC 110V/220V

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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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High-Voltage Photovoltaic (PV) Grid-Connection Switchgear
High-Voltage Photovoltaic (PV) Grid-Connection Switchgear

Scope of Application:High-Voltage PV Grid-Connection Switchgear is used at the grid connection points of large-scale or distributed PV systems. It acts as the central unit between the step-up transformer’s high-voltage output (typically 10kV–36kV) and the public grid, managing power transfer, providing protection, enabling real-time monitoring, and ensuring grid code compliance.

Rated Voltage (Ur): 10KV,11KV,12kV,17.5kV,24kV,33KV,36kV (Internationally prevalent levels);
Power Frequency Withstand Voltage (1 min): 28 kV (12kV system), 38 kV (24kV system), 70 kV (36kV system);
Lightning Impulse Withstand Voltage (BIL): 95 kV (12kV), 125 kV (24kV), 170 kV (36kV);
Rated Current (Ir): 630 A to 4000 A (Selected based on PV array capacity);
Rated Short-Time Withstand Current (Icw): 25 kA to 50 kA for 1s to 4s;

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High-voltage motor control switchgear
High-voltage motor control switchgear

Scope of Application:High-voltage motor control switchgear (3.3kV-15kV) controls, protects, and intelligently manages large industrial motors (like pumps and compressors) in heavy industries such as petrochemicals, power generation, and mining. metallurgy, and mining.

Rated Voltage: 3.3kV, 6.6kV, 7.2kV, 11kV, 12kV, 13.8kV, 15kV (compliant with IEC 62271-1/IEEE C37.04).
Rated Current: 400A to 5000A.
Rated Short-Circuit Breaking Capacity: 25kA/40kA (1s or 3s short-time withstand current).
Power Frequency Withstand Voltage: 28kV (12kV systems) / 38kV ( 15kV systems).
Lightning Impulse Withstand Voltage: 75kV (12kV) / 95kV (15kV systems).

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Low Voltage Motor Control Center (LV MCC)

Scope of Application:Suitable for the starting, stopping, protection, control, and monitoring of industrial three-phase asynchronous motors with rated voltages up to AC 1000V.

Rated Voltage (Ue): AC 380V, 400V, 415V, 440V, 480V, 660V, 690V (compliant with IEC 60439 / IEC 61439).
Rated Insulation Voltage (Ui): ≥ AC 690V / 1000V.
Rated Current (Ie): Covers motor power range (typical: 0.37kW – 630kW).
Rated Short-Time Withstand Current (Icw): Typically 15kA / 1s, 20kA / 1s, 25kA / 1s, 35kA / 1s, 50kA / 1s (to be specified).
Control Circuit Voltage: AC 110V/230V, DC 24V/110V/220V (to be specified).

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Medium & High Voltage High-Altitude Switchgear
Medium & High Voltage High-Altitude Switchgear

Scope of Application: Designed for power plants, substations, and industrial distribution systems at altitudes above 1,000 meters, facilitating power distribution, equipment protection, and control in medium-high voltage (3.6kV–40.5kV) grids under high-altitude insulation and thermal constraints.

Rated Voltage Levels:Medium Voltage: 3.6kV, 7.2kV, 12kV, 24kV (IEC 62271-1)/High Voltage: 40.5kV (IEC 62271-200)
Insulation Levels:Power-frequency withstand voltage (1min): Per IEC 60694, e.g., ≥28kV for 12kV switchgear (sea-level value), adjusted for altitude;Lightning impulse withstand voltage: e.g., ≥75kV for 12kV switchgear (sea-level value).
Rated Current: 630A, 1250A, 1600A, 2000A, 2500A, 3150A, 4000A (IEC 62271-1).
Altitude Derating Factor: >1,000 meters; insulation strength decreases by 1% per 100m altitude increase (IEC 60694).

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Medium-High Voltage Fire-Resistant Switchgear
Medium-High Voltage Fire-Resistant Switchgear

One-Sentence Summary:High-voltage fire-resistant switchgear is designed for electrical systems rated up to 10kV, providing fire-resistant power distribution, protection, and control in high-fire-risk installations such as substations, industrial plants, and high-rise buildings.

Rated Voltage: 7.2kV, 12kV, 24kV (per IEC 62271-1)
Rated Current: 630A, 1250A, 2500A, 3150A
Rated Short-Circuit Breaking Current: 20kA, 25kA, 31.5kA, 40kA
Insulation Level:Power Frequency Withstand Voltage: 42kV/1min (for 12kV switchgear)/Lightning Impulse Withstand Voltage: 75kV (for 12kV switchgear)
Ingress Protection (IP): IP4X (enclosure) / IP2X (operating front) (IEC 60529)
Fire Resistance Rating: ≥1 hour (passing IEC 60695 fire resistance tests)

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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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