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● Achieves millisecond-level disconnection in combination with circuit breakers.
● Quickly isolates short-circuit currents to prevent damage and maintain system stability.
● Cabinets made of high-quality aluminum-zinc coated steel are corrosion-resistant and durable.
● Can operate reliably in high-altitude regions or extreme cold with optional heating devices.
● Compact, modular design minimizes floor space and supports quick installation and deployment.
● Remote monitoring capabilities reduce labor costs and enhance operational efficiency.
● Equipped with a five-prevention interlock system for safe operation.
● Fully sealed primary side protects contacts; live voltage indicators provide visual confirmation.
Proper maintenance ensures reliability, reduces downtime, and extends equipment lifespan. Depending on operating conditions, high-voltage switchgear should be inspected every 3 to 5 years. Key steps include:
Reliable energy distribution for factories, refineries, chemical, and metallurgical plants.
High-efficiency distribution for malls, office buildings, and business districts.
Ideal for grid upgrades, substations, and infrastructure expansion.
Low-maintenance, safe solutions for hospitals, schools, and government facilities.
CE & ISO certified switchgear, suitable for EPC and export projects across Africa, Southeast Asia, Middle East, Europe, and Central Asia.
Armored Removable AC Metal Enclosed Switchgear
Durable, modular, and fully customizable.13.8KV MV HV Air Insulated Switchgear
High performance, type-tested, and widely exported.SF6 High Voltage Ring Main Unit (RMU)
Compact, fully insulated, and maintenance-free for medium voltage networks.What is high voltage switchgear and where is it used?
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High voltage switchgear is a set of electrical devices designed to control, protect, and isolate high-voltage electrical equipment in power transmission and distribution systems. It is commonly used in industrial plants, commercial complexes, substations, and infrastructure projects.
What types of high voltage switchgear does Lugao provide?
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● SF6 gas-insulated switchgear
● Vacuum circuit breaker switchgear
● Air-insulated switchgear
● Armored and removable metal-enclosed switchgear
How often should high voltage switchgear be maintained?
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Regular inspection and maintenance are recommended every 3 to 5 years, depending on operating conditions, frequency of use, and environmental factors.
Are Lugao high voltage switchgear units certified?
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Yes. All products are CE & ISO certified, type-tested, and meet international electrical standards for high-voltage equipment.
Can Lugao customize high voltage switchgear?
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Absolutely. We offer OEM customization for capacity, layout, insulation type, and cabinet configuration to meet specific project requirements.
High Voltage Switchgear (HV) is electrical equipment designed to control, protect, and isolate high-voltage power systems, typically operating at 36kV and above. It plays a critical role in power generation plants, transmission substations, and large industrial distribution networks by safely interrupting fault currents and maintaining system stability.
At Lugao Power, we manufacture a full range of Air-Insulated Switchgear (AIS) and Gas-Insulated Switchgear (GIS), engineered to meet IEC, ANSI, and IEEE standards, ensuring long-term safety and performance in demanding environments.
AIS uses ambient air as the primary insulation medium between live parts.
Lower initial investment
Simple structure and easy access for inspection
No SF₆ gas management required
Outdoor substations with sufficient space
Budget-sensitive projects
Locations with skilled maintenance personnel
Lower upfront cost and straightforward maintenance.
GIS uses SF₆ gas as the insulation and arc-quenching medium inside sealed metal enclosures.
Extremely compact design (up to 70% space saving)
High reliability in polluted, humid, or coastal environments
Minimal maintenance and long service life
Urban and underground substations
Industrial zones with harsh environmental conditions
Projects with high reliability requirements
Maximum reliability and safety where space and environmental constraints exist.
Rated voltage: 36kV (customizable)
High short-circuit breaking capacity
Arc-resistant and interlocking protection
Modular design for easy expansion
Compatible with digital substations & SCADA systems
Power generation plants
Transmission and distribution substations
Large industrial facilities (steel, mining, petrochemical)
Urban and underground substations
Renewable energy grid connection projects
Specialized in high & medium voltage power equipment
Advanced production lines and testing facilities
Strict incoming, in-process, and final inspection systems
ISO9001 & SGS certified manufacturer
Products comply with IEC / ANSI / IEEE standards
Routine and type testing before delivery
Exported to Africa, Southeast Asia, Middle East, Central Asia, and Europe
Proven performance in diverse grid environments
Customization & Technical Support
Tailored voltage, insulation type, and protection schemes
Detailed drawings and documentation
Pre-sales and after-sales engineering support
Q1: Which is better, AIS or GIS?
Neither is universally better. AIS is cost-effective and easy to maintain, while GIS offers compactness and superior reliability in harsh environments.
Q2: Does Lugao provide turnkey High Voltage Switchgear solutions?
Yes. We support design, manufacturing, testing, and on-site guidance.
Q3: How does Lugao manage SF₆ environmental impact?
We use sealed systems, leakage monitoring, and compliant gas handling procedures in line with international standards.
Choosing the right High Voltage Switchgear is a long-term investment in safety, reliability, and grid performance. Whether you require a cost-efficient AIS solution or a compact, high-reliability GIS system, Lugao Power delivers proven, compliant, and project-specific solutions.
