FYFH-2.0AT-E Enhanced-Insulation Heavy-Tension Section Insulator for 20kN Contact Wire
TB/T 3036-2016 | Air gap ≥430mm | 20kN contact wire tension | 27.5kV
Specifications
| Model | FYFH-2.0AT-E |
|---|---|
| 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 (designed for 2000-4000m high-altitude service) |
| Materials | High-strength aluminum alloy body for 20kN tension class; arc-resistant insulating elements; reinforced creepage; enlarged air gap geometry |
| Installation | In-line series suspension on the contact wire; both ends mechanically connected to the contact wire; verify tensioner compatibility for 20kN class |
The FYFH-2.0AT-E is the heavy-tension variant of the FYFH enhanced-insulation family, designed and manufactured per TB/T 3036-2016 for in-phase electrical sectioning of 25kV AC electrified railway overhead contact systems where the contact wire is rated at 20kN working tension. The -E enhancement adds air gap ≥430mm and reinforced creepage for severe-service environments.
The 20kN tension rating suits high-speed mainlines, heavy-haul freight corridors and mainline passenger railways with high contact wire tension. A high-strength aluminum alloy body carries the 20kN tensile load; arc-resistant insulating elements with reinforced creepage provide in-phase separation.
Rated for 27.5kV systems, line speeds up to 200 km/h, -40°C to +70°C and altitudes up to 4,000 m. Suitable for high-altitude lines, coastal and salt-fog regions, and heavy-pollution corridors where the standard 300mm gap is insufficient.
Henan Chuangwit Railway Equipment provides datasheets, type test reports and project engineering support for the FYFH-2.0AT-E heavy-tension enhanced variant.
Frequently Asked Questions
What does the 2.0 in FYFH-2.0AT-E mean?
The 2.0 indicates the rated contact wire working tension class of 20kN, distinguishing it from the 1.6 (16kN) and 1.8 (18kN) variants.
When should I choose FYFH-2.0AT-E over FYFH-1.6AT-E?
Choose FYFH-2.0AT-E for lines with 20kN contact wire working tension (heavy-haul, high-speed mainlines, high-tension mainline passenger railways).
Is the speed rating affected by the higher tension rating?
No. Both FYFH-2.0AT-E and FYFH-1.6AT-E are rated up to 200 km/h per TB/T 3036-2016 upper limit.
Performance
Operating Conditions
Designed for severe-service outdoor railway environments with 20kN contact wire tension: heavy-haul lines, high-tension mainline passenger railways, high-speed mainlines.
Mechanical
Aluminum alloy body rated for 20kN contact wire working tension; reinforced insulation geometry supports enlarged air gap.
Electrical
Enhanced arc-resistant insulation with air gap ≥430mm and extended creepage provides in-phase separation per TB/T 3036-2016 for 27.5kV systems in heavy-tension severe-service applications.
Applications
Heavy-Haul Freight
20kN contact wire tension on heavy-haul freight corridors.
High-Tension Mainlines
High-tension mainline passenger railways with 20kN contact wire.
Coastal & Salt-Fog
Severe-service coastal and salt-fog environments at 20kN tension.
Heavy-Pollution Corridors
Industrial zones with high pollution severity class at 20kN tension.