On-Load Tap-Changer Vacuum Interrupter Supplier from China
Founded in 1968, Sunway Hanguang Electric Manufacturing Limited is a reliable manufacturer of vacuum interrupters in China. Our factory in Hi-tech Zone of Xiaogan, Hubei province, boasts advanced production and testing equipment. As a trusted supplier, we specialize in vacuum interrupters, and our Vacuum Interrupter For On-Load Tap-Changer series is widely recognized globally, complying with GB, IEC and ANSI standards.
As a core component for power transformer on-load tap-changers, Vacuum Interrupter For On-Load Tap-Changer realizes load-bearing tap switching via vacuum insulation and arc-extinguishing performance. Sunway Hanguang, a global leader in vacuum interrupter parameters, classifies this product by application, structure, parameters and switching principles to meet diverse needs, as follows:
1. Classification by Installation Method
1.1 Tank-Built Type
Installed inside the tap-changer oil tank, suitable for compact resistor-type tap-changers. Sunway Hanguang adopts advanced one-time brazing technology to reduce air leakage, with a special sealing structure to avoid oil degradation, ensuring stability.
Covering 0.66kV-40.5kV, maximum 3200A three-phase rated through current and 10000kVA switching capacity, it is widely used in power, metallurgy and petroleum industries, adapting to harsh environments.
1.2 Dry Type
Installed outside the oil tank for dry environments, suitable for open/semi-open tap-changers. It features a high-strength airtight insulating shell, with excellent moisture, dust and pollution resistance.
Miniaturized and easy to maintain (12kV-40.5kV), it is used in dry-type transformers and urban power grids. Positive pressure rapid leak detection technology ensures long-term reliable operation.
2. Classification by Application Scenario
2.1 Indoor Vacuum Interrupter For On-Load Tap-Changer
Designed for indoor tap-changers, compact and corrosion-resistant, suitable for power distribution rooms and transformer rooms.
Covering 0.66kV-40.5kV, it is widely used in buildings, factories and commercial complexes, featuring low noise and easy maintenance.
2.2 Outdoor Vacuum Interrupter For On-Load Tap-Changer
Highly adaptable to harsh outdoor weather (-40℃ to 85℃), with excellent insulation and sealing via high-strength ceramic shell and special technology.
Used in outdoor transformers, overhead lines and power stations (12kV-40.5kV), it has long service life and low maintenance cost.
3. Product Characteristics and Quality Assurance
All Sunway Hanguang's products consist of airtight insulating shell, conductive circuit, shielding system and bellows, with an annual production and sales capacity of 350,000 pieces.
With ISO9001-2008 certification, we implement full-chain quality control, supervised by professional specialists throughout production and inspection.
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1.14KV Vacuum Interrupter For On-Load Tap-Changer
Sunway Hanguang, with over fifty years of experience in the electrical field, specializes in the customized research and development of 1.14KV Vacuum Interrupter For On-Load Tap-Changer (OLTC) (core models VITJ 1.14/1600K, VI-OLT-1.14/630-12.5, etc.). As the core arc-extinguishing unit for OLTCs, it is compatible with 50/60Hz systems, features a vacuum degree of ≤1.33×10⁻³Pa, achieving micro-arc interruption and zero re-ignition, addressing many pain points of traditional products. Backed by advanced production lines and core patents, the product has passed numerous authoritative certifications, with over 200,000 units installed globally, gaining recognition from well-known companies. As a high-quality manufacturer from China, Sunway Hanguang safeguards power systems with reliable quality.
Sunway Hanguang is a professional Vacuum Interrupter For On-Load Tap-Changer manufacturer and supplier in China. We have an experienced sales team, professional technicians, and an after-sales service team.
