Product Description
General
Introducing the Drop-out Fuse and Pull Load Drop-out Fuse: your indispensable allies for state-of-the-art outdoor high-voltage electrical protection. Expertly designed, these devices are tactically installed at the high-voltage side of distribution transformers or strategically integrated into distribution lines. They are pivotal in safeguarding against short circuits and overload conditions, while adeptly managing the initiation and co-loading of current. Crafted with precision, the drop-out fuse features a robust insulating bracket and fuse tubes, complemented by static contacts at each bracket end and mobile contacts on the fuse tube ends. This ingenious construction includes an inner arc tube paired with an outer layer made from phenolic paper or epoxy glass cloth tube. The Pull Load Drop-out Fuse further elevates performance with its auxiliary contacts and specialized arc chute, delivering unmatched flexibility and seamless current load operations.
In its steady state, the drop-out fuse is locked firmly in a closed position, with the fuse tube under tension. Upon detecting a fault, the fault current triggers the fuse to blow, igniting an arc. This arc energizes the arc tube, resulting in the release of large quantities of gas, which creates high pressure and induces a vertical wind path in the tube, efficiently stretching and elongating the arc. Upon fuse activation, the moving contact loses tension, rotates outward, and the locking mechanism disengages, allowing the fuse tube to descend to a breaking position. For load operations, an insulating rod is utilized to pull the moving contact in alignment with the static contact. Continued application separates the auxiliary contacts, causing an arc to form and stretch in the hood slit, with the arc cover aiding arc extinguishment as current approaches zero.
Use and Standards
This exceptional product is meticulously engineered for use in 10 to 35KV distribution lines, including branching lines and the primary side of distribution transformers. It offers formidable protection against overloads and short circuits, while also enabling the seamless separation and combination of the rated load current.
Manufactured with precision, this product rigorously follows the JB/T8321-1996 Method for AC high-voltage fuse preparation, ensuring every detail aligns with the GB15166.3-1994 standards for high voltage fuses, specifically Expulsion fuses. Should any standard lack clarity on critical parameters and configurations, adjustments are thoughtfully made in accordance with the JB/DQ2139-1986 interim technology requirements for 10 to 35KV outdoor high voltage drop fuses.
The Drop-out Fuse Cutout and Load Switching Fuse Cutout are unparalleled outdoor high-voltage protection solutions. These devices are expertly configured to connect with distribution transformers or lines' incoming feeders, playing an integral role in defending transformers and lines from short circuit and overload conditions while adeptly handling on/off load currents. Featuring a sophisticated design, the drop-out fuse cutout boasts insulating insulator supports and a fuse tube with static contacts securely fastened on both insulator ends, while mobile contacts grace the fuse tube ends. The fuse tube is engineered with an internal arc-extinguishing tube and an external casing of phenolic compound paper or epoxy glass tube. The load switching fuse cutout further includes robust elastic auxiliary contacts and a specialized arc-extinguishing enclosure, ensuring efficient on-off load current switching.
During typical operations, the fuse link maintains the fuse tube under tension to keep it securely closed. However, when a fault arises, the fault current swiftly melts the fuse, producing an electric arc. This arc heats the arc-extinguishing tube, releasing a significant amount of gas, which elevates pressure, thereby stretching the arc within the tube. Once the fuse link melts, the moving contact releases tension, unlocking the mechanism and allowing the fuse tube to drop, transitioning to an open position. For load switching, operators employ an insulating operating bar to pull the moving contact. Initially, this keeps the main contact engaged with the auxiliary static contact. As the auxiliary contact is further retracted, an electric arc forms and elongates within the arc-extinguishing enclosure gap. Concurrently, the arc-extinguishing mechanism expels gas, effectively extinguishing the arc as current reaches zero.
Product Parameters
| Typ |
Rated Volatge (kv) |
Rated Current (A) |
Breaking current (kA) |
Impulse voltage (BIL) |
Power-frequency withstand voltage |
Leakage distance (mm) |
Weight (kg) |
| UD-1 |
12 |
100 |
6.3 |
110 |
40 |
250 |
5.8 |
| UD-1 |
12 |
200 |
8 |
110 |
40 |
250 |
5.8 |
| UD-2 |
15 |
100 |
10 |
125 |
45 |
320 |
6.9 |
| UD-2 |
15 |
200 |
12 |
125 |
45 |
320 |
6.9 |
| UD-3 |
24 |
100 |
8 |
150 |
65 |
530 |
10 |
| UD-3 |
24 |
200 |
10 |
150 |
65 |
530 |
10 |
| UD-4 |
15 |
100 |
10 |
125 |
45 |
350 |
4.15 |
| UD-4 |
15 |
200 |
12 |
125 |
45 |
350 |
4.15 |
| UD-5 |
12 |
100 |
6.3 |
110 |
40 |
250 |
6.3 |
| UD-5 |
12 |
200 |
8 |
110 |
40 |
250 |
6.3 |
| UD-6 |
15 |
100 |
10 |
125 |
45 |
320 |
10 |
| UD-6 |
15 |
200 |
12 |
125 |
45 |
320 |
10 |
| UD-7 |
24 |
100 |
8 |
150 |
65 |
540 |
10 |
| UD-7 |
24 |
200 |
10 |
150 |
65 |
540 |
10 |
| UD-7(F) |
33 |
200 |
12 |
170 |
70 |
720 |
4.4 |
| UD-8 |
33 |
100 |
10 |
170 |
70 |
720 |
11.6 |
| UD-8 |
33 |
200 |
12 |
170 |
70 |
720 |
11.6 |
Main product
Company Profile
Zhejiang ChaoTai Complete Equipment Co., Ltd. stands as a beacon of innovation and excellence within the sphere of electrical integration. As a vibrant high-tech enterprise, we proudly present a seasoned team proficient in R&D, production, and service, drawing on over 15 years of dedicated industry expertise. Our commitment to pushing boundaries ensures that we are at the forefront of technological advancements, delivering unparalleled electrical solutions across the globe.
Our diverse and extensive product portfolio features high-voltage solid-state soft starters, advanced capacitor cabinets, both high and low voltage switchgear, cutting-edge gas-insulated switchgear, and robust substations. These high-performance offerings are vital to an array of sectors, including energy, chemical industries, metal smelting, and expansive electric power grids. They also serve industrial manufacturing, prestigious universities, and research institutions. Moreover, our innovative solutions empower the medical and pharmaceutical sectors, support municipal commerce, enhance water conservancy and hydropower projects, optimize road traffic systems, and elevate both commercial and residential developments. Through our products, we are committed to fostering advancements in technology and infrastructure, enriching the communities we serve.
Our foundation is built upon a steadfast commitment to technological innovation and the core philosophy of 'smart manufacturing.' We are committed to attracting premier technical talent to holistically elevate our company's core competitive edge. Our fervent dedication to delivering unmatched value to our clients is unwavering, as we strive to craft the most esteemed brand within the industry. From our humble beginnings, we have consistently progressed, journeying from inception to excellence. Our path is illuminated by a dedication to innovation and sustained by a contemporary business ethos, prioritizing quality as our lifeline, market orientation, reputation-driven development, and management-driven efficiency. We ardently uphold our commitment to 'technology as the guide, standardized management, exceptional quality, and customer satisfaction' as our guiding tenets in quality and technical talent management, tirelessly working to enhance our market presence. Our mission is to serve China's electric power and grid transmission and distribution sectors with heightened speed, strength, and ambition. At our very core, integrity is non-negotiable, quality is sacrosanct, service reigns supreme, and customer satisfaction is our unwavering creed. Our relentless pursuit of excellence, tireless innovation, and dedication to building a trustworthy brand remain our guiding principles. Your recognition propels our progress. We extend our heartfelt gratitude to our loyal clients for their enduring support, and Senhang Technology eagerly anticipates collaborating with you to craft a brighter future together.
Our Advantages
Certifications
After Sales Service
FAQ
Q1. Are you a factory or trading company?
A.We are a factory.
Q2. Where is your factory located? How can I visit there?
A. Our factory is located in Wenzhou City, Zhejiang Province, China. You can fly to Longwan airport directly. All our clients,from home or abroad, are warmly welcome to visit us!
Q3. What's the payment term?
A. We accept TT. 30% deposit and 70% before shipment, Western Union, L/C At Sight is ok! We'll l show you the photos of the products and packages before you pay the balance.
Q4. Tell me the standard of package? What is your terms of packing?
A: Generally, we pack our goods in neutral white boxes and brown cartons, If vou have leaallyl registered patent, we can pack the goods in your branded boxes after getting your authorization letters.
Q5. Would you accept to use our logo?
A. If you have good quantity,it absolute no problem to do OEM.
Q6. How about the transport?
A. If the number of aoods is small we usually use TNT.DHL.FEDEX.EMS and some express voull offered. If the number of the goods is big usually we use the FWD you offered or we provided. Either by sea or by air is OK.
Q7. What is your Production lead time /delivery time?
A: Generally, it will take 25 to 30 days after receivina vour advance payment.
The specificl delivery time depends on the items and the quantity of your order. Silicone rubber's reqular product is 1,000/ week, Porcelain's need 2-3 weeks about 1000 pcs.
Q8. How do you make our business long-term and good relationship?
A:l. We keep aood auality and competitive price to ensure our customers benefit:
A: 2. We respect every customer as our friend and we sincerely do business and make friendsl with them, no matter where they come from.
A: 3.Most goods we have the type report according the IEC STANDARD
Q9. What is your sample policy?
A: We can supply the sample if we have ready parts in stock, but the customers have to pay the courier cost.
Q10. Can you produce according to the samples?
A: Yes, we can produce by your samples or technical drawings. We can build the molds and fixtures.
Q11. What is your terms of delivery?
A: EXW, FOB, CFR, CIF.
Q12.What certificates do you have?
A:ISO9001,OHSAS18001,ISO14001 certificate and Type test report of product.
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