36KV Vacuum Interrupter For Outdoor VCB

Model: TD524A, TD524H

Sunway Hanguang 36KV Vacuum Interrupter for Outdoor VCB is the core arc extinguishing unit of outdoor vacuum circuit breakers (VCB), with core models VITD 36/1250-20A and VITD 36/1250-20H. It is suitable for 50/60Hz AC systems, with a vacuum degree of ≤1.33×10⁻³Pa, achieving safe arc extinguishing and zero re-ignition.

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Product Description

The 36KV Vacuum Interrupter for Outdoor VCB is a core component developed by Sunway Hanguang specifically for outdoor VCBs, playing a crucial role in arc extinguishing for circuit switching and fault protection, and is suitable for various complex 36KV outdoor power distribution conditions. As a professional manufacturer with over fifty years of experience in the electrical field, Sunway Hanguang addresses the pain points of 36KV outdoor conditions, relying on advanced production lines and more than 20 core patents. It has passed numerous international and domestic tests, with over 80,000 units installed globally, serving more than 40 countries, becoming a reliable supplier in this field. The company is located in China and has a modern professional factory. It has introduced advanced equipment from Germany and Japan to build automated production lines, and has obtained multiple system certifications and authoritative tests. It is recognized by ABB, Siemens, and the State Grid Corporation of China, and has mature application experience in extreme outdoor environments.

Product Parameters

ELECTRICAL RATINGS(3PHASE) SYMMETRICAL BASIS
Model NO.	VITD 36/1250-20A	VITD 36/1250-20H
Rated frequency	50/60Hz
Rated Voltage	36/40.5kV,r.m.s
Rated short-time power-frequency withstand voltage (1 min)	70/95kV,r.m.s
Rated lightning impulse withstand voltage	170/185kV,Peak
Rated Current	800A	1250A
Circuit resistance at lowest rated contact force	≤20Micro ohms
Rated short-circuit breaking Current	18.4kA,r.m.s	20kA,r.m.s
Rated short-time withstand current	18.4kA,r.m.s	20kA,r.m.s
Rated duration of short-circuit	4s
Rated peak withstand current	46kA,r.m.s	50kA,r.m.s
Rated short-circuit making Current	46kA,r.m.s	50kA,r.m.s
Max. Dc component	0.4
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.)	4.08kg	7.06kg
Weight of movable parts	2.1kg	3.1kg
Closing force due to bellow and atmosphere	170±40N
4.Force required to hold contacts open at full stroke	320±50N
MECHANICAL REQUIREMENTS(REF. VCB)
Clearance between open contacts	15±1mm	18±2mm
Average opening speed(average of first 75% of contact gap)	1.5±0.3m/Sec	1.6±0.3m/Sec
Average closing speed(average of last 30% of contact gap)	1.1±0.2m/Sec	1.3±0.2m/Sec
Rated added external contact final force	2000±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, safe and reliable

The 36KV Vacuum Interrupter for Outdoor VCB uses high-purity Cu-Cr alloy cup-shaped contacts, with a current interruption value of <3A, resistance to welding, and low arc voltage, effectively suppressing operating overvoltage and protecting line and equipment insulation.

2. Excellent sealing, strong maintenance-free performance

Equipped with imported 316L stainless steel bellows, helium mass spectrometry leak detection strictly controls sealing, with an annual leakage rate of <0.5%, a mechanical life of 30,000 cycles, and an electrical life of 20,000 cycles, achieving long-term maintenance-free operation and reducing total life cycle costs.

3. Environmental Adaptability and Extreme Durability

The composite material casing provides excellent insulation, meeting power frequency and lightning impulse voltage withstand standards. It can withstand a wide temperature range of -45℃ to +85℃ and altitudes up to 4000 meters, with an IP65 protection rating, easily handling various harsh outdoor environments.

4. Controllable Quality and Efficient After-Sales Service

Each product undergoes full inspection before leaving the factory and features QR code traceability. The modular design facilitates replacement, and intelligent monitoring is available as an option. 15 global technical centers provide 7x24 hour after-sales support.

Product Application Scenarios

The 36KV Vacuum Interrupter for Outdoor VCB is widely used in 36KV high-voltage substations, wind and solar power plants, industrial park power distribution, and other fields. It is suitable for rail transit, energy storage systems, and overseas EPC projects, with no SF₆ emissions, complying with environmental regulations.

Frequently Asked Questions

- Customization Services: Supports multiple standards, provides OEM/ODM services, and conventional models are shipped within 10 days, compatible with mainstream VCB equipment.

- Quality Assurance: Selection of high-quality core components, full-process quality control, complete test reports, and QR code traceability.

- Warranty and After-Sales Service: 10-year limited warranty, global service network providing multi-language support and on-site services.

- Installation Notes: Moisture-proof and impact-resistant packaging, installation should follow specifications, and relevant tests are recommended after completion.

36KV Vacuum Interrupter For Outdoor VCB