36KV Vacuum Interrupter For Ring Main Unit

Model: TD555P

Sunway Hanguang 36KV Vacuum Interrupter For Ring Main Unit (core model VITD 36/2500-25P) is a customized core arc extinguishing unit for high-voltage ring main units, suitable for 50/60Hz systems, with a vacuum degree of ≤1.33×10⁻³Pa, achieving arc-free interruption. As a professional manufacturer with over fifty years of experience in the electrical field, Sunway Hanguang relies on automated production lines and core patents. Its products have passed multiple certifications, with over 300,000 units installed globally, becoming a trusted supplier worldwide and contributing to the construction of green and intelligent power distribution networks.

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Product Description

The 36KV Vacuum Interrupter For Ring Main Unit is a core component specifically tailored by Sunway Hanguang for high-voltage ring main units. The core model is VITD 36/2500-25P, suitable for 50/60Hz AC systems, and can specifically address environmental protection, high-frequency operation, high load, and maintenance-free requirements. The product focuses on strictly controlled vacuum degree to achieve arc-free interruption and zero re-ignition, avoiding safety hazards.

Sunway Hanguang owns a modern factory, relying on imported equipment to build automated production lines, holding over 30 patents. Its products have passed ISO, KEMA, and other certifications and full-project testing, conforming to IEC and GB standards, and are recognized by State Grid, ABB, and others, demonstrating the strength of Chinese manufacturing.

Product Parameters

ELECTRICAL RATINGS(3PHASE) SYMMETRICAL BASIS
Model NO.	VITD 36/2500-25P
1.Rated frequency	50/60Hz
2.Rated Voltage	36/40.5kV,r.m.s
3.Rated short-time power-frequency withstand voltage (1 min)	70/95kV,r.m.s
4.Rated lightning impulse withstand voltage	170/185kV,Peak
5.Rated Current	2500A
6.Circuit resistance at lowest rated contact force	≤20Micro ohms
7.Rated short-circuit breaking Current	25kA,r.m.s
8.Rated short-time withstand current	25kA,r.m.s
9.Rated duration of short-circuit	4s
10.Rated peak withstand current	63kA,r.m.s
11.Rated short-circuit making Current	63kA,r.m.s
12.Max. Dc component	0.4
13.*Rated breaking current of single capacitor bank	630A,r.m.s
14.*Rated breaking current of back-to-back capacitor bank	400A,r.m.s
15.Rated operating sequence	O-0.3(0.5)s-CO-180s-CO
MECHANICAL DATA
1.Interrupter Weight(Approx.)	5.32kg
2.Weight of movable parts	2.1kg
3.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)
1.Clearance between open contacts	15±1mm
2.Average opening speed(average of first 75% of contact gap)	1.5±0.3m/Sec
3.Average closing speed(average of last 30% of contact gap)	1.1±0.2m/Sec
4.Rated added external contact final force	2500±200N
5.Contact bouncing duration at closing operation	≤2ms
6.Closing and Opening non-simultaneity of three-phase Contacts	≤2ms
7.Maximum Rebound during opening	≤2mm
LIFE
1.Electrical Life at Rated Normal Current	20,000Operations
2.Electrical Life at Rated Short Circuit Current	50Operations
3.Mechanical Life	30,000Operations
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 product has excellent core performance, using high-purity Cu-Cr alloy contacts, with a current limiting value of <3A, strong anti-welding properties, single capacitor bank interruption of 630A, and contact wear ≤3mm; coupled with imported bellows, the annual leakage rate is <0.5%, with a mechanical life of 30,000 times and an electrical life of 20,000 times, achieving long-term maintenance-free operation. The housing is made of high-strength ceramic material, providing excellent insulation protection. It features a power frequency withstand voltage of 70/95kV/1min, and can withstand a wide temperature range of -40℃ to +85℃ and altitudes up to 4000 meters. With an IP67 protection rating, it is suitable for complex working conditions. Each product undergoes 12 comprehensive inspections, features QR code traceability, and has a failure rate of <0.02%. The modular design facilitates replacement, and 35 technical centers worldwide provide 7x24 hour service.

Product Application Scenarios

The 36KV Vacuum Interrupter for Ring Main Units is widely used in 36KV ring network systems, industrial parks, data centers, wind and solar power substations, and other scenarios. It can handle complex working conditions such as high temperature, high humidity, and high altitude, and is SF₆-free, complying with environmental regulations. It is suitable for "Belt and Road" overseas projects, promoting high-quality Chinese products to the global market.

Frequently Asked Questions

- Customization Services: Supports multiple standards, provides OEM/ODM services, and conventional models are shipped within 7-15 days. Compatible with mainstream ring main unit equipment.

- Quality Assurance: Core components are selected from well-known brands, with full-process quality control. Products come with test reports and are traceable via QR code.

- Warranty and After-Sales Service: 10-year limited warranty, vacuum decay does not exceed 20%, and global service points provide multi-language technical and maintenance support.

- Installation Notes: Moisture-proof and impact-resistant packaging. Installation should comply with relevant requirements. Withstand voltage and mechanical characteristics tests are recommended after installation.

Brand Commitment

As a professional supplier and manufacturer, Sunway Hanguang always prioritizes quality, continuously providing high-quality 36KV Vacuum Interrupters for Ring Main Units to global customers. We are deeply committed to R&D and innovation, promoting environmentally friendly and intelligent product upgrades, demonstrating the responsibility of Chinese manufacturing, and contributing to the development of global power distribution networks.

36KV Vacuum Interrupter For Ring Main Unit