27.5kV Flexible Section Insulator for Electrified Railway OCS
Flexible design for complex installation environments | -40°C to +70°C
Specifications
| Model | RXFG-27.5kV |
|---|---|
| Standard | TB/T 3036-2016 Section Insulators for Electrified Railway OCS |
| Rated Voltage | 27.5kV rated (25kV AC 50Hz single-phase traction supply) |
| Design Speed | Up to 160 km/h (depending on sub-model) |
| Operating Temperature | -40°C to +70°C |
| Altitude | ≤ 4,000 m |
| Materials | High-strength aluminum alloy body; arc-resistant insulating elements (silicone rubber / porcelain) |
| Installation | In-line series suspension on the contact wire; both ends mechanically connected to the contact wire |
The RXFG-27.5kV flexible section insulator provides in-phase electrical separation on electrified railway overhead contact systems rated 27.5kV (25kV AC 50Hz single-phase traction supply). Its flexible design adapts to complex installation environments where rigid units are difficult to align, such as tight curves, tunnels and retrofit projects.
The insulator is designed per TB/T 3036-2016 and is suitable for lines operating at up to 160 km/h. A high-strength aluminum alloy body carries the contact wire tensile load, while arc-resistant insulating elements (silicone rubber or porcelain) deliver dependable electrical isolation. Operating temperature range is -40°C to +70°C, with altitude capability up to 4,000 m.
The flexible structure tolerates misalignment and simplifies tensioning during installation, reducing adjustment time in short possession windows. Like all section insulators in this series, it is installed in-line with the contact wire as a horizontal series suspension with mechanical connections at both ends.
Henan Chuangwei Railway Equipment Co., Ltd. supports the RXFG series with full documentation and engineering assistance for project-specific layouts. Contact us for datasheets and quotations.
Frequently Asked Questions
When should I choose a flexible section insulator?
Choose the flexible type when installation geometry is constrained — tight curves, tunnels, or retrofit sites where a rigid insulator is hard to align and tension. It tolerates misalignment better and shortens installation time.
What line speed is the RXFG-27.5kV rated for?
It is suitable for electrified railway lines operating at up to 160 km/h, depending on the selected sub-model and installation conditions.
Does it comply with TB/T 3036-2016?
Yes, it is designed per TB/T 3036-2016. We provide type test documentation with every delivery.
Performance
Operating Conditions
Engineered for outdoor railway service from -40°C to +70°C and altitudes to 4,000 m. The flexible structure suits constrained geometry such as curves, tunnels and retrofits.
Mechanical
Flexible articulation tolerates installation misalignment while the aluminum alloy body carries full contact wire tension; smooth pantograph transition at up to 160 km/h.
Electrical
Arc-resistant insulating elements ensure in-phase electrical separation per TB/T 3036-2016 for 27.5kV systems, verified by type testing.
Applications
Mainline Railways
In-phase sectioning on 25kV AC lines up to 160 km/h.
Curves & Tunnels
Flexible structure adapts to constrained installation geometry.
Retrofit Projects
Fast installation and tensioning in short possession windows.
Cold Regions
Reliable operation down to -40°C.