Product Catalogue
Sectioning & Switching Equipment for Railway & Metro OCS
Henan Chuangwit manufactures CRCC-certified section insulators, neutral section insulators, HV disconnectors and metro DC disconnectors for 25kV AC railways and 750V/1500V DC urban rail — with project-engineered customization for national railway and metro projects.
Product Categories
20 CATEGORIESSection Insulator
In-phase sectioning for 25kV AC OCS — shuttle, wing and rhombic types, up to 200 km/h.
→ TB/T 3037Phase Separation Insulator
Neutral section insulators for phase breaks on 25kV AC electrified railways.
→ GB 1985HV Disconnector
Outdoor HV disconnectors 10–27.5kV, with manual, hand-crank and motor operating mechanisms.
→ IEC 61992-3Metro DC Disconnector
1.5kV DC disconnectors up to 6000A for metro traction power isolation.
→ TB/T 3252Metro Section Insulator
Rigid and flexible metro section insulators for 750V/1500V DC OCS, up to 120 km/h.
→ TB/T 2075Tension Compensation Devices
Ratchet, pulley and spring tension compensators with complete tunnel anchoring fittings for constant OCS tension.
→ TB/T 2075.1Cantilever Systems
Speed-class cantilever assemblies to 350 km/h plus tubes, bases and tunnel support fittings.
→ TB/T 2075.3Positioning Devices
Limit and non-limit locators, positioning tubes, registration clamps and head-span sets to 350 km/h.
→Featured Range
FULL CATALOGUE IN CATEGORY PAGESContact Wire & Messenger Wire
Copper and copper alloy contact wires and messenger wires per GB/T 12971 and TB/T 3111 series, 65–300 mm².
→ GB/T 11032Lightning Arrester
Gapless metal-oxide surge arresters for 27.5kV OCS in porcelain and composite housings, 5kA and 10kA classes.
→ TB/T 2075Splice Clamp
Contact wire and messenger wire splice clamps with at least 95% of wire strength and smooth pantograph passage.
→ GB/T 1984Circuit Breaker & Load Switch
Vacuum breakers and load switches for 27.5kV traction substations and 12-40.5kV distribution.
→ GB/T 25020Pillar Series
Lattice steel, H-section and concrete masts plus aluminium emergency repair posts for railway OCS.
→ TB/T 2075.5Terminal Anchor Clamp
Termination anchor clamps for contact wire and messenger wire up to 350km/h.
→ TB/T 3199Insulator Series
Porcelain, composite and glass insulators for cantilever, post, suspension and tensioning use.
→ TB/T 2075.11Electrical Connection Assembly
Contact wire and messenger wire connection clamps for reliable current conduction.
→ TB/T 2075.6Center Anchor Assembly
Mid-point anchor clamps and ropes for anti-creep anchoring at tension length middles.
→ TB/T 2075OCS Crossing
S/T/Y type crossings for smooth pantograph transition at railway turnouts, 160-250km/h.
→ TB/T 2075.7Dropper & Clamp
Integral droppers for suspending contact wire from messenger wire in railway OCS.
→ TB/T 2075.8Stitch Wire Assembly
Stitch wire clamps and integral droppers for stitched catenary elasticity improvement.
→How to Select
VOLTAGE · SPEED · ENVIRONMENTBy System Voltage
25kV AC mainline railways: section insulators (TB/T 3036) and neutral section insulators (TB/T 3037), plus 27.5kV HV disconnectors. 750V/1500V DC metro: TB/T 3252 metro section insulators and 1.5kV DC disconnectors up to 6000A.
By Line Speed
Mainline AC products are rated up to 160-200 km/h per TB/T 3036/3037 depending on type; metro DC section insulators cover up to 120 km/h per TB/T 3252-2022. Match the sub-model to your design speed at inquiry.
By Service Environment
High-altitude, heavy-pollution, coastal salt-fog and tunnel sections call for enhanced-insulation (-E) variants with ≥430mm reinforced air gap. Test tracks needing AC/DC switching use our 1.5kV/27.5kV dual-purpose disconnector.