FYFH-1.6AT Shuttle-Type Section Insulator (Type A) for 25kV AC OCS
TB/T 3036-2016 | Rated 27.5kV | Design speed up to 200 km/h
Specifications
| Model | FYFH-1.6AT-S |
|---|---|
| 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 (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 FYFH-1.6AT shuttle-type section insulator (Type A) is designed and manufactured in accordance with TB/T 3036-2016, the Chinese railway industry standard for section insulators used in electrified railway overhead contact systems (OCS). It provides reliable in-phase electrical separation between adjacent OCS sections on 25kV AC 50Hz single-phase traction power networks, while maintaining smooth mechanical passage for the pantograph.
The shuttle-type profile guides the pantograph carbon strip across the insulating zone with minimal dynamic disturbance. A high-strength aluminum alloy body carries the contact wire tensile load, and arc-resistant insulating elements (silicone rubber or porcelain) isolate the two electrical sections. The design is rated for a system voltage of 27.5kV and design speeds up to 200 km/h, with an operating temperature range of -40°C to +70°C and altitudes up to 4,000 m.
Typical applications include station throats, depot entrances, sectioning points on mainline railways and locations where independent power supply zones are required on the same phase. The unit is installed in-line with the contact wire as a horizontal series suspension, with both ends mechanically connected to the contact wire.
Henan Chuangwei Railway Equipment Co., Ltd. manufactures the FYFH-1.6AT series under a certified quality system, with type tests covering mechanical strength, electrical withstand and arc resistance. Custom configurations for specific line conditions are available on request.
Frequently Asked Questions
What is a shuttle-type section insulator used for?
It electrically separates two in-phase sections of a 25kV AC overhead contact system while allowing the pantograph to pass smoothly at line speed, typically at station throats, depots and sectioning points.
Is the FYFH-1.6AT suitable for 200 km/h lines?
Yes. The FYFH-1.6AT-S variant is designed for operating speeds up to 200 km/h; exact speed capability depends on the selected sub-model and installation conditions.
Can you provide type test reports and CRCC-related documentation?
Yes. We supply full type test reports per TB/T 3036-2016 and supporting certification documents with every quotation. Contact us at info@chuangwit.com.
Performance
Operating Conditions
Designed for continuous outdoor service on electrified railway lines, operating reliably from -40°C to +70°C, at altitudes up to 4,000 m, in humid, rainy, dusty and polluted atmospheres typical of railway corridors.
Mechanical
The high-strength aluminum alloy frame carries full contact wire tensile load. The shuttle profile provides a smooth pantograph transition with low contact force fluctuation at speeds up to 200 km/h.
Electrical
Arc-resistant insulating elements provide in-phase electrical separation per TB/T 3036-2016, with creepage distances and withstand levels verified by type tests for 27.5kV systems.
Applications
Mainline Railways
In-phase sectioning on trunk lines and high-speed corridors up to 200 km/h.
Stations & Depots
Electrical separation at station throats, depot entrances and stabling sidings.
Humid & Rainy Regions
Arc-resistant insulation maintains performance in high-humidity and heavy-rainfall areas.
Cold Regions
Rated for -40°C low-temperature operation in severe winter climates.