Product Description
General
The drop-out fuse and pull load drop-out fuse are indispensable stalwarts in the realm of outdoor high-voltage protection, meticulously engineered to be the steadfast sentinels of electric systems. Positioned on the high-voltage side of distribution transformers or integrated within distribution lines, these fuses stand as a robust bulwark against transformer and line short circuits, adeptly handling overloads, while seamlessly managing open-circuit load currents. Their design is a testament to durability, with an insulating bracket and sturdy fuse tubes; static contacts are firmly anchored on each side of the insulation bracket, while the moving contact is strategically placed at the ends of the fuse tube. The fuse tube's sophisticated construction includes an inner arc tube, elegantly enveloped by an outer phenolic paper tube or an epoxy glass cloth tube. Crafted for superior performance, the pull load drop-out fuse is equipped with dynamic auxiliary contacts and an arc chute, enhancing operational agility, particularly when dealing with open or co-load currents.
In routine operations, the drop-out fuse remains securely closed, ensuring the fuse tube and fuse remain in perfect tension. When a system anomaly occurs, the fault current promptly melts the fuse, initiating a powerful arc. The arc's intense heat generates a surge of gas from the arc tube, increasing the internal pressure. This triggers a vertical airflow along the conduit, skillfully extending and elongating the arc. As the fuse blows, the moving contact loses its tension, activating the locking mechanism, which releases the fuse tube, guiding it into the breaking position. For load operations, an insulating rod is utilized to disengage the moving contact, initially maintaining a connection with the static contact. Continued pulling with the insulating rod results in the auxiliary contacts detaching, creating and extending an arc within the hood slit. The arc cover's gas aids in extinguishing the arc when the current drops to zero.
Use and Standards
This product excels with a masterfully crafted design, ideal for 10 ~ 35KV distribution lines, branch lines, and the primary sides of distribution transformers. It serves as a bulwark against overloads and short circuits, expertly managing the disconnection and reconnection of rated load currents with precision and reliability.
Aligning with the finest standards, the product model complies with the JB/T8321-1996 Method for type AC high-voltage fuses preparation. It is meticulously crafted to satisfy the rigorous GB15166.3-1994 high voltage fuses expulsion fuses standards. When standards ambiguously define vital parameters and configurations, precision adjustments are made following the JB/DQ2139-1986 requirements for 10 ~ 35KV outdoor high voltage drop fuses interim technology, ensuring every aspect meets the highest expectations.
Drop-out fuse cutouts and load switching fuse cutouts are vital components in outdoor high voltage protection. Seamlessly integrated into the incoming feeder of distribution transformers or distribution lines, they provide essential defense against short circuits and overloads, proficiently managing on/off loading currents. The drop-out fuse cutout boasts insulated insulator supports and a robust fuse tube; static contacts are securely mounted on either side of the insulator support, and moving contacts rest at the ends of the fuse tube. The intricate design of the fuse tube includes an inner arc-extinguishing tube, encapsulated by an outer phenolic compound paper tube or epoxy glass tube. The load switching fuse cutout is equipped with resilient elastic auxiliary contacts and an arc-extinguishing enclosure, ensuring proficient management of on-off loading currents.
Under standard operational conditions, the fuse link ensures that the fuse tube remains securely closed. When faults arise, fault currents swiftly melt the fuse, creating an electric arc that heats the arc-extinguishing tube, releasing abundant gas. This high pressure propels the arc along the tube. Once the fuse link melts, the moving contact loses its tension, triggering the locking mechanism, and the fuse tube drops out, transitioning the cutout to an open state. To disengage during cutout loading, operators use an insulating bar to pull the moving contact. Initially, the main contact and auxiliary static contact remain engaged, but further pulling disengages the auxiliary contacts, generating an electric arc that elongates within the arc-extinguishing enclosure gap. Simultaneously, the arc-extinguishing mechanism releases gas, ensuring the arc is extinguished as the 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. shines as a lighthouse in the realm of electrical integration, where innovation meets craftsmanship. As a prestigious high-tech enterprise, we are at the forefront of progress, driven by a team of exceptional scholars and experts in R&D, production, and service. With a storied legacy of over 15 years, we are not just participants in the industry; we are pioneers, continually setting and redefining the benchmarks of excellence and innovation.
Our diverse product portfolio embodies our unwavering commitment to quality and innovation. It encompasses premium high-voltage solid-state soft starters, meticulously engineered capacitor cabinets, versatile high and low voltage switchgear, and state-of-the-art gas-insulated switchgear. We are also front-runners in providing cutting-edge substations, each meticulously crafted to cater to a wide array of industry demands. From the dynamic energy and chemical sectors to robust metal smelting and expansive electric power grids, our solutions not only meet but exceed expectations. Our advanced offerings are pivotal in industrial manufacturing, esteemed universities, pioneering research entities, and vibrant medical and pharmaceutical sectors. In municipal commerce, water conservancy, hydropower, road traffic systems, and a myriad of commercial and residential areas, our products stand as paragons of reliability and efficiency, transforming the landscape of modern utility.
At Zhejiang ChaoTai, our relentless pursuit of technological innovation and our visionary 'smart manufacturing' philosophy are the cornerstones of our success. We attract and nurture top-tier technical talent, reinforcing our core competencies and delivering exceptional value to our clients, solidifying our stature as an industry vanguard. From our humble origins, we have traversed an extraordinary path of growth, embracing a contemporary business model rooted in quality, foresight, and operational efficiency. Our ethos is defined by a steadfast focus on technology, adherence to standardized management protocols, exceptional quality assurance, and unsurpassed customer satisfaction. Integrity forms the bedrock of our operations; quality is our hallmark, and customer satisfaction is our perpetual pursuit. We aspire to excel and innovate, building a brand synonymous with trust and excellence. With heartfelt gratitude, we extend our deepest thanks to our esteemed customers for their unwavering support and loyalty. Together with Senhang Technology, we are poised to forge a future that is brighter and promising, hand in hand, every step of the way!
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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