FYFH-1.0TG-DC Single-Line Section Insulator
Flexible single-line metro section insulator per TB/T 3252-2022 for 1500V DC metro OCS, up to 120 km/h.
Specifications
| Model | FYFH-1.0TG-DC |
|---|---|
| Drawing No. | CWLFD1.0TG-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-1.0TG-DC flexible single-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 1500V DC metro and urban rail overhead contact systems. It replaces the legacy FDJYQ-CWL-1 designation in the Henan Chuangwit Railway Equipment catalogue.
The flexible structure adapts to constrained metro installation environments — tunnels, tight curves and congested station areas — where alignment tolerance is limited. High-strength insulating elements, aluminum alloy runners and stainless steel fasteners form a durable assembly rated for metro line speeds up to 120 km/h, operating from -25°C to +45°C at altitudes up to 2,000 m.
Installation is by rigid suspension point mounting or flexible in-line series connection, depending on the OCS type. Drawing number CWLFD1.0TG-DC-00.
Henan Chuangwit Railway Equipment Co., Ltd. supports metro projects with engineering assistance and full documentation for the FYFH-1.0TG-DC series.
Frequently Asked Questions
What does FYFH-1.0TG-DC stand for?
FYFH = section insulator family; 1.0 = rated contact wire tension class; TG = tunnel/general metro rigid-bar variant; DC = direct current. The legacy FDJYQ-CWL-1 designation is being phased out in favour of the industry-standard FYFH-*TG-DC naming.
Which standard applies?
TB/T 3252-2022 (Rigid Suspension Catenary Busbar and Components for Electrified Railway).
What is the maximum operating speed?
Up to 120 km/h, covering typical metro line speeds.
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
Flexible structure adapts to constrained metro geometry; aluminum alloy runners give smooth pantograph transition up to 120 km/h.
Electrical Performance
High-strength insulating elements provide reliable section separation on 1500V DC metro systems per TB/T 3252-2022.
Applications
Metro Tunnels
Sectioning in constrained tunnel geometry.
Stations
Section separation at station and depot entrances.
Humid Tunnels
Materials selected for humid underground service.
Cold Regions
Operation down to -25°C.
