11KV Vacuum Interrupter For Railway Circuit Breaker

Model: TD325J

The Sunway Hanguang 11KV Vacuum Interrupter for Railway Circuit Breakers is a core arc extinguishing unit specifically designed for railway circuit breakers. It addresses the demanding conditions of high vibration and frequent operation, providing a stable arc extinguishing solution with high reliability, long lifespan, and maintenance-free operation. As a professional manufacturer with over fifty years of experience in the electrical field, Sunway Hanguang relies on rigorous quality control to produce international standard products, serving global rail transit projects. As a reliable supplier, it also provides comprehensive after-sales support.

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Product Description

The core models of this 11KV Vacuum Interrupter for Railway Circuit Breakers are VI-RCB-11/630-25 and VI-RCB-11/1250-31.5, compatible with 50/60Hz AC systems. With a vacuum degree of ≤1.33×10⁻³Pa, it achieves arc-free interruption and zero re-ignition, ensuring the stability of the power supply system.

Sunway Hanguang has built a fully automated factory using equipment imported from Germany and Japan, possessing over 20 core patents and numerous international and domestic authoritative testing certifications. With over 200,000 units installed globally, it has been recognized by companies such as Siemens and CRRC, and has contributed significantly to the upgrading of railway electrification in China's rail transit network.

Product Parameters

ELECTRICAL RATINGS(3PHASE) SYMMETRICAL BASIS
Rated Frequency	50/60Hz
Rated Maximum Line to Line Voltage	12kV,r.m.s
Rated Power Frequency Withstand Voltage:Air	42kV,r.m.s
Rated Impulse Withstand Voltage:Air	95kV,Peak
Rated Normal Current	1250A
Rated Short-Circuit Current(3Phase Symmetrical Basis)	25kA,r.m.s
Percentage D.C. Component of Rated S.C. Breaking Current	50%
Rated Short-Circuit Making Current	63kA,Peak
Rated Duration of Short Time Current	4s
Rated Short-Time Withstand Current	25kA,r.m.s
Rated Peak Withstand Current	63kA,r.m.s
Maximum Contact Resistance at Minimum Closing Force	19Micro ohms
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-0.3s-co-180s-co
MECHANICAL DATA
Interrupter Weight(Approx.)	2.01kg
Moving Part Weight(Approx.)	0.77kg
Closing Force due to Bellow and Atmospheric	80±40N
4.Force Required to Hold Contacts open at Full Stroke	120±50N
MECHANICAL REQUIREMENTS(REF. VCB)
Contact Stroke	8±1 mm
Opening Speed(average of 75 contact gap)	1.1±0.2m/Sec
Maximum Overtravel During Opening	2mm
Maximun Rebound During Opening	2mm
Closing Speed(average of last 30% contact gap)	0.6±0.2m/Sec
Maximum Contact Bounse Duration(with maximum 2 bounces)	≤2ms
Rated Contact Compressive Force	2500±200N
Closing and Opening non-simultaneity of three-phase Contacts	≤2ms
LIFE (ESTIMATED)
Electrical Life at Rated Normal Current	50,000Operations
Electrical Life at Rated Short Circuit Current	100Operations
Mechanical Life	50,000Operations
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

The 11KV Vacuum Interrupter for Railway Circuit Breakers uses high-purity Cu-Cr alloy longitudinal magnetic field contacts, with a current limiting value of <3A, strong resistance to welding, effectively suppressing operating overvoltage, protecting the insulation of sensitive rail transit equipment, and conforming to international standards.

2. High Sealing Performance and Long Service Life

Equipped with imported 316L stainless steel bellows, helium mass spectrometry leak detection ensures strict sealing control, with an annual leakage rate of <0.5%. Both mechanical and electrical life reach 50,000 cycles, achieving long-term maintenance-free operation and reducing operating and maintenance costs.

3. Strong Environmental Adaptability and High Safety

The high-strength ceramic shell is specially treated, providing excellent insulation. It has a power frequency withstand voltage of 42kV/1min and a lightning impulse withstand voltage of 95kV (peak), meeting vibration resistance standards, and is resistant to wide temperature ranges and high altitudes, with IP67 protection, making it suitable for various complex scenarios.

4. Precise Quality Control and Convenient Operation and Maintenance

Each 11KV Vacuum Interrupter for Railway Circuit Breakers undergoes 15 comprehensive inspections before leaving the factory, with QR code traceability, resulting in an on-site failure rate of <0.015%; the modular design facilitates replacement, and optional monitoring modules are available. 7x24 hour operation and maintenance support is provided by 35 technical centers worldwide.

Product Applications

The 11KV Vacuum Interrupter for Railway Circuit Breakers is widely used in power supply systems for subways, high-speed railways, and intercity railways, undertaking tasks such as load switching and fault interruption. It is SF₆-free, meeting environmental protection requirements, and is widely used in China and "Belt and Road" overseas projects, adapting to various complex scenarios.

Frequently Asked Questions

1. Customization Services

Supports standards such as IEC 62271-200, provides OEM/ODM services, with conventional models shipped within 5-10 days. Compatible with mainstream equipment, as a professional supplier, we cooperate with customers throughout the entire process from adaptation to delivery.

2. Quality Assurance

Core components are carefully selected from well-known brands, and full-process quality control is achieved through a fully automated factory. Each unit comes with a test report and QR code traceability, demonstrating the manufacturer's commitment to quality.

3. Warranty and After-Sales Service

Provides a 10-year limited warranty, guaranteeing that vacuum degradation is ≤ 20% of the initial value; global service centers provide multi-language support, quickly responding to after-sales needs in China and overseas, ensuring stable product operation.

4. Installation Notes

Moisture-proof and shock-proof packaging is used for transportation. Installation must comply with relevant rail transit requirements. After installation, it is recommended to complete voltage withstand and mechanical characteristics tests to ensure proper operation.

11KV Vacuum Interrupter For Railway Circuit Breaker