36KV Vacuum Interrupter For Railway Circuit Breaker

Model: TD545A

Sunway Hanguang, a professional manufacturer with over fifty years of experience in the electrical field, has developed the 36KV Vacuum Interrupter For Railway Circuit Breaker, a core arc extinguishing unit specifically designed for high-voltage circuit breakers in rail transit systems. The core models include VI-RCB-36/1250-31.5 and VI-RCB-36/2000-25, suitable for 50/60Hz AC systems. The vacuum level is strictly controlled at ≤1.33×10⁻³Pa, enabling arc-free interruption and zero re-ignition, specifically addressing various demanding challenges in rail transit.

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Product Description

The 36KV Vacuum Interrupter For Railway Circuit Breaker is a core protection component of high-voltage power supply systems in rail transit, ensuring the safe and stable operation of the traction power supply network. It is perfectly suited for harsh environments with high vibration and frequent operation. Its manufacturing factory utilizes advanced equipment for fully automated mass production. With its reliable quality, the product has become a trusted supplier of choice in the global rail transit sector, not only selling well domestically but also being adapted for "Belt and Road" overseas projects, showcasing the strength of Chinese manufacturing.

The company utilizes automated production lines built with equipment imported from Germany and Japan, holding over 30 core patents. Through multi-system and comprehensive project testing, this product has accumulated over 150,000 units installed globally, serving over 60 rail transit projects, and has been recognized by companies such as Siemens and CRRC, accumulating mature application experience in complex scenarios.

Product Parameters

ELECTRICAL RATINGS(3PHASE) SYMMETRICAL BASIS
Rated frequency	50/60Hz
Rated Voltage	40.5kV,r.m.s
Rated short-time power-frequency withstand voltage (1 min)	95kV,r.m.s
Rated lightning impulse withstand voltage	185kV,Peak
Rated Current	2000A
Circuit resistance at lowest rated contact force	≤20Micro ohms
Rated short-circuit breaking Current	25kA,r.m.s
Rated short-time withstand current	25kA,r.m.s
Rated duration of short-circuit	4s
Rated peak withstand current	63kA,r.m.s
Rated short-circuit making Current	63kA,r.m.s
Max. Dc component	40%
Rated breaking current of single capacitor bank	630A,r.m.s
Rated breaking current of back-to-back capacitor bank	400A,r.m.s
Rated operating sequence	O-0.3(0.5)s-CO-180s-CO
MECHANICAL DATA
Interrupter Weight(Approx.)	8.23kg
Weight of movable parts	3.74kg
Closing force due to bellow and atmosphere	170±40N
Force required to hold contacts open at full stroke	320±50N
MECHANICAL REQUIREMENTS(REF. VCB)
Clearance between open contacts	18±2mm
Average opening speed(average of first 75% of contact gap)	1.6±0.3m/Sec
Average closing speed(average of last 30% of contact gap)	1.3±0.2m/Sec
Rated added external contact final force	2500±200N
Contact bouncing duration at closing operation	≤2ms
Closing and Opening non-simultaneity of three-phase Contacts	≤2ms
Maximum Rebound during opening	≤2mm
LIFE
Electrical Life at Rated Normal Current	20,000Operations
Electrical Life at Rated Short Circuit Current	50Operations
Mechanical Life	30,000Operations
Contact Erosion Limit	3mm
Shelf Life	20Years
Meets or exceeds the electrical endurance requirements of class E2 for autoreclosing duty per IEC 62271-200 and JB 8738-2008. Rated Characteristics to be given on request

Product Features and Advantages

1. Excellent Arc Extinguishing and Electrical Performance

Using high-purity Cu-Cr alloy contacts, the current interruption value is <3A, with strong anti-welding properties, effectively suppressing operating overvoltage, protecting sensitive equipment, and ensuring the stable arc extinguishing performance of the 36KV Vacuum Interrupter For Railway Circuit Breaker.

2. Reliable Sealing and Long Service Life

Equipped with imported stainless steel bellows, the annual leakage rate is <0.5%, with a mechanical life of 30,000 cycles and an electrical life of 20,000 cycles, achieving long-term maintenance-free operation and significantly reducing maintenance costs.

3. Superior Environmental Adaptability

The high-strength ceramic casing offers excellent insulation, meets vibration resistance standards, withstands a wide temperature range of -40℃ to +85℃ and high altitudes, and has an IP67 protection rating, making it suitable for various complex rail transit scenarios and further enhancing the environmental adaptability of the 36KV Vacuum Interrupter for Railway Circuit Breakers.

4. Rigorous Quality Control and Convenient Maintenance

Each product undergoes 15 comprehensive inspections, is traceable via QR code, and has a field failure rate of <0.01%; the modular design facilitates replacement, and optional monitoring modules are available. 7x24 hour service is provided by 35 technical centers worldwide.

Product Applications

This product is widely used in power supply scenarios for high-speed rail, heavy-haul railways, and subways, performing tasks such as load switching and fault interruption. With no SF₆ emissions, it meets environmental protection requirements and is suitable for domestic and international rail transit projects, providing core support for the safe and stable operation of global power supply systems.

Frequently Asked Questions

- Customization Services: Supports multiple standards, provides OEM/ODM services, and offers 7-15 day delivery for standard models, compatible with mainstream manufacturer equipment.

- Quality Assurance: Core components are carefully selected from renowned brands, with automated quality control throughout the entire process, ensuring product traceability and controllable quality.

- Warranty and After-Sales Service: 10-year limited warranty, guaranteeing vacuum decay of no more than 20%, with technical and maintenance support provided by global service centers.

- Installation Guidelines: Requires moisture-proof and shock-resistant transportation; installation must comply with relevant requirements; pressure and mechanical characteristics tests are recommended after installation.

Brand Strength

Sunway Hanguang owns a modern manufacturing factory and has been deeply involved in the electrical field for over fifty years. With advanced equipment, core patents, and a comprehensive testing system, it has become a high-quality global supplier, empowering China's rail transit industry and bringing high-quality products to the world.

36KV Vacuum Interrupter For Railway Circuit Breaker