FYFH-1.8AT Shuttle-Type Section Insulator (Type B) for 25kV OCS
TB/T 3036-2016 | Smooth transition, superior arc resistance | 27.5kV
Specifications
| Model | FYFH-1.8AT |
|---|---|
| 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 200 km/h (TB/T 3036-2016 upper limit) |
| 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 FYFH-1.8AT shuttle-type section insulator (Type B) is designed and manufactured per TB/T 3036-2016 for in-phase electrical sectioning of 25kV AC 50Hz single-phase electrified railway overhead contact systems. The Type B shuttle profile offers a particularly smooth pantograph transition and enhanced arc-resistance performance for busy mainline sectioning points.
A high-strength aluminum alloy body carries the contact wire tensile load; arc-resistant insulating elements (silicone rubber or porcelain) separate the two electrical sections. The unit is rated for 27.5kV systems, line speeds up to 200 km/h (Type B rated per TB/T 3036-2016 upper limit), -40°C to +70°C operating temperature and altitudes up to 4,000 m.
The shuttle geometry keeps the pantograph carbon strip in controlled contact through the insulating zone, limiting contact force peaks and reducing wear on both strip and insulator runners.
Installed as an in-line series suspension in the contact wire with mechanical end connections. Henan Chuangwit Railway Equipment provides datasheets, type test reports and project engineering support for the FYFH series.
Frequently Asked Questions
What distinguishes the FYFH-1.8AT Type B shuttle design?
The Type B shuttle profile is optimized for an especially smooth pantograph transition and superior arc resistance, reducing contact wear at heavily used sectioning points.
What is the speed rating?
Up to 200 km/h per TB/T 3036-2016 upper limit, depending on sub-model and installation conditions.
Is customization available?
Yes. We support project-specific configurations — contact info@chuangwit.com with your line parameters.
Performance
Operating Conditions
Designed for continuous outdoor railway service from -40°C to +70°C at altitudes to 4,000 m, including humid and polluted atmospheres.
Mechanical
Shuttle-type profile with controlled pantograph contact through the insulating zone; aluminum alloy body carries full contact wire tension.
Electrical
Enhanced arc-resistant insulation provides in-phase separation per TB/T 3036-2016 for 27.5kV systems, verified by type tests.
Applications
Busy Mainlines
Smooth transition and arc resistance for heavily used sectioning points.
Stations & Depots
In-phase separation at station throats and depot entrances.
Humid & Rainy Regions
Reliable insulation in wet climates.
Cold Regions
Operation down to -40°C.