1.14KV Vacuum Interrupter For On-Load Tap-Changer

Model: TJ040K

Sunway Hanguang, with over fifty years of experience in the electrical field, specializes in the customized research and development of 1.14KV Vacuum Interrupter For On-Load Tap-Changer (OLTC) (core models VITJ 1.14/1600K, VI-OLT-1.14/630-12.5, etc.). As the core arc-extinguishing unit for OLTCs, it is compatible with 50/60Hz systems, features a vacuum degree of ≤1.33×10⁻³Pa, achieving micro-arc interruption and zero re-ignition, addressing many pain points of traditional products. Backed by advanced production lines and core patents, the product has passed numerous authoritative certifications, with over 200,000 units installed globally, gaining recognition from well-known companies. As a high-quality manufacturer from China, Sunway Hanguang safeguards power systems with reliable quality.

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Product Description

The 1.14kV Vacuum Interrupter for On-Load Tap-Changer is a core arc-extinguishing component specifically tailored by Sunway Hanguang for OLTCs, precisely matching the needs of high-frequency voltage regulation and small current interruption. It is compatible with 50/60Hz AC systems and widely used in various power and industrial applications.

As a professional electrical product supplier, Sunway Hanguang, with over fifty years of technological accumulation, has created the 1.14kV Vacuum Interrupter for On-Load Tap-Changer with strictly controlled vacuum degree and excellent performance, fundamentally solving the pain points of traditional arc-extinguishing products. The company relies on imported equipment to build automated production lines, holds over 40 core patents, and has passed multiple authoritative certifications. With a significant global installed base, it has accumulated rich experience in extreme working conditions.

Product Features and Core Advantages

This series of 1.14KV Vacuum Interrupter For On-Load Tap-Changer is optimized for the high-frequency operation characteristics of OLTCs, demonstrating leading comprehensive performance and showcasing Sunway Hanguang's manufacturing strength as a professional factory.

1. Excellent Arc Extinguishing Performance

Using high-purity Cu-Cr alloy contacts, the current chopping value is <3A, suppressing operating overvoltage. The arc energy is low, and contact erosion is reduced by 90% compared to traditional products, resulting in extremely strong stability during small current interruption.

2. Ultra-Long Maintenance-Free Lifespan

Equipped with imported stainless steel bellows, ensuring strict sealing with an annual leakage rate of <0.5%, a mechanical lifespan exceeding 2 million cycles, and an electrical lifespan of 1 million cycles, achieving 30 years of maintenance-free operation and reducing operating and maintenance costs.

3. Adaptable to Complex Working Conditions

The integrated molded housing provides excellent insulation and meets pressure resistance standards. It can withstand wide temperature ranges, high altitudes, high salt spray, and strong vibrations, offering exceptional adaptability.

4. Rigorous Quality Control + Comprehensive Service

Each product undergoes 15 comprehensive inspections and supports QR code traceability. The failure rate is as low as 0.008%, and it is compatible with mainstream OLTC platforms. 50 regional technical centers worldwide provide 7x24 hour after-sales service.

Product Parameter Table

Main Technical Specification
VOLTAGE RATINGS
Rated voltage(Ur)	kV	1.14
Rated short-time(1min)power-frequency withstand voltage(Ud)	kV	21
Rated lightning impulse withstand voltage(Peak)(Up)	kV	40
Rated frequency(fr)	Hz	50
CURRENT RATINGS
Rated current(Ir)	A	1250
Circuit resistance at lowest rated contact force	μΩ	≤60
Rated short-time withstand current(lk)	kA	10
Rated duration of short-circuit(tk)	s	4
Rated peak withstand current(lp)	kA	10
Rated making current	kA	6.3
Limit breaking current	A	10
MECHANICAL DATA
Weight of movable parts	kg	≤0.6
Closing force due to bellow and atmosphere	N	70±30
Force required to hold contacts open at full stroke	N	120±40
MECHANICAL REQUIREMENTS
Clearance between open contacts	mm	3±1
Average opening speed (average of first 75% contact gap)	m/s	0.4-0.5
Average closing speed (average of last 30% contact gap)	m/s	0.15-0.25
Rated added external contact final force	N	250±50
Contact bouncing duration at closing operation	ms	≤2
Closing and opening non-simultaneity of three-phase contacts	ms	≤2
Maximum rebound during opening	mm	≤1
LIFE
Storage life	years	20
Rated mechanical endurance	Times	300000
Contacts limit erosion	mm	3

Product Application Scenarios

Widely applicable to various types of transformers, primarily used in urban power distribution networks, new energy booster stations, and rail transit systems. It features oil-free and SF₆-free emissions, aligning with environmental trends and providing core assurance for stable power quality, showcasing the strength of "Made in China."

Frequently Asked Questions

Customization Services: Supports customization of rated current, monitoring modules, etc., and provides OEM/ODM services. Compatible with various standards, with a typical delivery time of 15-30 days for standard models.

Quality Assurance: Core components are selected from renowned brands, with traceable quality control throughout the entire process. Each unit comes with a test report and supports QR code verification.

Warranty and After-Sales Service: Provides a 10-year limited warranty. Global service centers provide 7x24 hour on-site diagnosis, spare parts supply, and other services.

Installation Notes: Ensure moisture-proof and shock-proof protection during transportation. Installation must meet working condition requirements. Pressure and mechanical characteristics tests are recommended after installation.

1.14kV Vacuum Interrupter For On-Load Tap-Changer