11kV Vacuum Interrupter for Generator VCB

Model: TD336G

Sunway Hanguang, a professional manufacturer with over fifty years of experience in the electrical field, has developed the 11kV Vacuum Interrupter for Generator VCB, a core arc-extinguishing unit specifically designed for generator circuit breakers (GCB). This product is compatible with 50/60Hz AC systems, achieving arc-free switching through ultra-high vacuum technology, overcoming traditional drawbacks. Backed by rigorous standards and strong technical expertise, it has become a reliable supplier in the global power generation sector, showcasing China's strength in medium-voltage electrical manufacturing.

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Product Description

The 11kV Vacuum Interrupter for Generator VCB is a customized core arc-extinguishing unit from Sunway Hanguang, specifically designed for GCBs, responsible for generator circuit breaking and fault isolation, safeguarding system safety. It is compatible with 50/60Hz AC systems, with a vacuum degree of ≤1.33×10⁻³Pa, achieving arc-free switching and zero re-ignition, addressing the drawbacks of traditional products such as rapid wear and complex maintenance.

Sunway Hanguang possesses a modern intelligent manufacturing factory, utilizing top-tier international equipment and holding 35 core patents. Its products are KEMA and CESI certified, with over 200,000 units installed globally, and are recognized by State Grid, GE, and others. The 11kV Vacuum Interrupter for Generator VCB is a representative product showcasing the company's core strengths.

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	1600A
Rated Short-Circuit Current(3Phase Symmetrical Basis)	31.5kA,r.m.s
Percentage D.C. Component of Rated S.C. Breaking Current	50%
Rated Short-Circuit Making Current	80kA,Peak
Rated Duration of Short Time Current	4s
Rated Short-Time Withstand Current	31.5kA,r.m.s
Rated Peak Withstand Current	80kA,r.m.s
Maximum Contact Resistance at Minimum Closing Force	18Micro 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.)	3.13kg
Moving Part Weight(Approx.)	1.28kg
Closing Force due to Bellow and Atmospheric	120±50N
Force Required to Hold Contacts open at Full Stroke	190±60N
MECHANICAL REQUIREMENTS(REF. VCB)
1.Contact Stroke	11±1 mm
2.Opening Speed(average of 75 contact gap)	1.1±0.2m/Sec
3.Maximum Overtravel During Opening	2mm
4.Maximun Rebound During Opening	2mm
5.Closing Speed(average of last 30% contact gap)	0.6±0.2m/Sec
6.Maximum Contact Bounse Duration(with maximum 2 bounces)	≤2ms
7.Rated Contact Compressive Force	3150±200N
8.Closing and Opening non-simultaneity of three-phase Contacts	≤2ms
LIFE (ESTIMATED)
1.Electrical Life at Rated Normal Current	50,000Operations
2.Electrical Life at Rated Short Circuit Current	100Operations
3.Mechanical Life	50,000Operations
4.Contact Erosion Limit	3mm
5.Shelf Life	20Years
1.Meets or exceeds the electrical endurance requirements of class E2 for autoreclosing duty per IEC 62271-200 and JB 8738-2008. 2.* Rated Characteristics to be given on request

Product Features and Advantages

The 11kV Vacuum Interrupter for Generator VCB offers significant advantages in materials, processes, and service. Key highlights include:

- High-purity Cu-Cr alloy contacts, with a current interruption value of <3A, protecting generator insulation;

- Imported 316L bellows + helium mass spectrometry leak detection, with an annual leakage rate of <0.5%, and a mechanical life exceeding 50,000 cycles;

- Ceramic casing sealed by high-frequency fusion, providing excellent insulation, suitable for wide temperature ranges, high altitudes, and extreme working conditions;

- 15 comprehensive inspections + QR code traceability, with a failure rate of <0.01%, compatible with mainstream GCBs, and tool-free replacement;

- 40 global technical centers providing 7×24-hour comprehensive service.

Product Applications

This product has a wide range of applications and is suitable for various extreme operating conditions, including gas turbine power plants, wind/solar power storage substations, hospital emergency power supplies, and marine power systems, providing reliable protection for power system grid connection and fault isolation.

Frequently Asked Questions

1. Customization Services: Supports customization of current and intelligent modules, as well0 as OEM/ODM services;

2. Quality Assurance: Full-process quality control with traceable electronic records;

3. Warranty and After-Sales Service: 10-year limited warranty, with on-site diagnosis and spare parts services provided by global service centers;

4. Installation Guidelines: Moisture-proof and shock-resistant packaging during transportation; after proper installation, dielectric strength and mechanical characteristics should be tested.

11KV Vacuum Interrupter For Genertection VCB