FYFH-2.0TG-DC Double-Line Section Insulator
Flexible double-line metro section insulator per TB/T 3252-2022 for twin contact wire 1500V DC metro OCS, up to 120 km/h.
Specifications
| Model | FYFH-2.0TG-DC |
|---|---|
| Drawing No. | CWLFD2.0TG-DC-00 |
| Standard | TB/T 3252-2022 Rigid Suspension Catenary Busbar and Components for Electrified Railway |
| Rated Voltage | DC 1500V (rigid or flexible suspension per sub-model) |
| Design Speed | Up to 120 km/h (metro lines) |
| Operating Temperature | -25°C to +45°C |
| Altitude | ≤ 2,000 m |
| Materials | High-strength insulating elements; aluminum alloy runners; stainless steel fasteners |
| Installation | Rigid suspension point mounting or flexible in-line series connection |
The FYFH-2.0TG-DC flexible double-line metro section insulator is designed and manufactured per TB/T 3252-2022 (Rigid Suspension Catenary Busbar and Components for Electrified Railway) for in-phase electrical sectioning of twin contact wire catenary on 1500V DC metro and urban rail overhead contact systems. It replaces the legacy FDJYQ-CWL-2 designation in the Henan Chuangwit Railway Equipment catalogue.
The flexible design eases installation in complex metro environments — both contact wires are sectioned simultaneously in a single assembly — and keeps operation stable over long service periods. High-strength insulating elements, aluminum alloy runners and stainless steel fasteners, rated for metro speeds up to 120 km/h, -25°C to +45°C, altitudes up to 2,000 m.
Mounting is by rigid suspension point or flexible in-line series connection, matching the OCS suspension type. Drawing number CWLFD2.0TG-DC-00.
Contact Henan Chuangwit Railway Equipment Co., Ltd. for datasheets, drawings and quotations for double-line metro sectioning applications.
Frequently Asked Questions
When is a double-line section insulator needed?
On metro sections with twin contact wire catenary, both wires must be sectioned together — the double-line unit insulates and bridges both contact wires in one assembly.
Which standard applies?
TB/T 3252-2022 (Rigid Suspension Catenary Busbar and Components for Electrified Railway).
Is installation complicated?
No — the flexible design simplifies alignment and tensioning, shortening installation time in tunnel possession windows.
Performance
Operating Conditions
Metro tunnel and open-air service from -25°C to +45°C, altitudes to 2,000 m, including humid tunnel atmospheres.
Mechanical Performance
Double-wire flexible assembly sections both contact wires simultaneously; smooth pantograph transition up to 120 km/h.
Electrical Performance
High-strength insulating elements provide reliable double-line separation on 1500V DC systems per TB/T 3252-2022.
Applications
Twin-Wire Metro OCS
Simultaneous sectioning of double contact wire runs.
Stations & Depots
Section separation in station throats and depots.
Humid Tunnels
Materials suited to humid underground service.
Cold Regions
Operation down to -25°C.
