Product Description
General
Discover the unparalleled strength and reliability of our drop-out fuses and pull load drop-out fuses, masterfully crafted as essential outdoor high-voltage protective devices. Designed to be the stalwart guardians of your electric systems, these fuses are strategically positioned on the high-voltage side of distribution transformers or within distribution lines, delivering unmatched protection against transformer and line short circuits, and overloads, all while deftly handling open-circuit load currents. Their sturdy construction proudly showcases an insulating bracket and fuse tubes. The static contact is meticulously secured at each end of the insulation bracket, while the moving contact finds its place at the extremities of the fuse tube. Ingeniously designed, the fuse tube features an inner arc tube, elegantly encased by an outer phenolic paper tube or an epoxy glass cloth tube. Elevate your operational excellence with the pull load drop-out fuse, boasting agile auxiliary contacts and an arc chute, enhancing its operational flexibility and efficiency, particularly when navigating open or co-load currents.
In the realm of daily operations, our drop-out fuse remains steadfastly closed, ensuring the fuse tube and fuse are perfectly taut. Upon the occurrence of a system fault, the fault current acts with speed and precision, melting the fuse and giving birth to an arc. The arc's intense heat initiates a cascade of gas from the arc tube, elevating internal tube pressure. This dynamic process sets a vertical airflow into motion along the pipeline, expertly stretching and elongating the arc. As the fuse succumbs, the moving contact loses its tension, activating the locking mechanism. This expertly calibrated sequence allows the fuse tube to gracefully transition into the breaking position. For proficient load pulling, operators employ an insulating rod to seamlessly disengage the moving contact, initially maintaining its connection with the static contact. A sustained pull with the insulating rod prompts the auxiliary contacts to disengage, generating and elongating an arc within the hood slit's confines. The arc cover's gas masterfully facilitates arc extinction as the current gracefully dwindles to zero.
Use and Standards
This product is a triumph of design innovation, crafted specifically for 10 ~ 35KV distribution lines, branching lines, and the primary sides of distribution transformers. Standing tall as a bastion of protection, it expertly safeguards against overloads and short circuits while skillfully orchestrating the separation and union of rated load currents.
Our product adheres to the highest standards of excellence, aligning seamlessly with the JB/T8321-1996 Method for type AC high-voltage fuses preparation. Every facet of its engineering is meticulously crafted to meet the rigorous GB15166.3-1994 high voltage fuses expulsion fuses standards. In instances where standards present ambiguities in crucial parameters and configurations, precision adjustments are expertly implemented in accordance with JB/DQ2139-1986 requirements for 10 ~ 35KV outdoor high voltage drop fuses interim technology.
Drop-out fuse cutouts and load switching fuse cutouts form the cornerstone of outdoor high voltage protection. Flawlessly integrated into the incoming feeder of distribution transformers or distribution lines, they provide indispensable defense against short circuits and overloads, while proficiently managing on/off loading currents. The drop-out fuse cutout is characterized by its insulate insulator supports and fuse tube; static contacts are securely situated on either side of the insulator support, with moving contacts artfully positioned at the ends of the fuse tube. The fuse tube's design is a marvel, featuring an inner arc-extinguishing tube, skilfully encapsulated by an outer phenolic compound paper tube or epoxy glass tube. The load switching fuse cutout is equally impressive, boasting robust elastic auxiliary contacts and an arc-extinguishing enclosure, ensuring the proficient management of on-off loading currents.
Under standard operating conditions, the fuse link confidently ensures that the fuse tube remains securely shut. When faults arise, fault currents swiftly melt the fuse, initiating an electric arc that heats the arc-extinguishing tube, prompting the release of abundant gas. This high pressure expertly propels the arc along the tube. Once the fuse link gives way, the moving contact loses tension, triggering the mechanism to lock, and the fuse tube drops out, transitioning the cutout to an open state. To manage switch-off during cutout loading, operators employ an insulating bar to draw the moving contact away. Initially, the main contact and auxiliary static contact remain engaged, but further pulling disengages the auxiliary contacts, producing an electric arc that elongates within the arc-extinguishing enclosure gap. Simultaneously, the arc-extinguishing mechanism releases gas, ensuring the arc is decisively extinguished as the current gracefully descends to 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 shining exemplar in the world of electrical integration. As a prestigious high-tech enterprise, we are fervently dedicated to pioneering innovation, with a distinguished team excelling in research, development, production, and service. With a legacy spanning over 15 years, we are at the forefront of the industry, setting new benchmarks of excellence and transforming the landscape of electrical solutions.
Our expansive product range exemplifies our unwavering commitment to quality and innovation. We proudly offer top-tier high-voltage solid-state soft starters, advanced capacitor cabinets, versatile high and low voltage switchgear, and state-of-the-art gas-insulated switchgear. Our offerings include cutting-edge substations tailored to fulfill diverse industry demands. From dynamic energy sectors and the chemical industry to robust metal smelting and expansive electric power grids, our solutions elevate operational capabilities. Our advanced products are also pivotal in industrial manufacturing, esteemed universities, pioneering research institutes, as well as in the thriving medical and pharmaceutical sectors. In municipal commerce, water conservancy, hydropower, road traffic systems, and a wide spectrum of commercial and residential zones, our products are renowned for delivering unmatched reliability and efficiency.
At Zhejiang ChaoTai, our steadfast dedication to technological innovation and a visionary 'smart manufacturing' philosophy inspires us to attract exceptional technical talent. This enables us to enhance our core competitiveness, delivering unparalleled value to our clients while reinforcing our leadership in the industry. From humble beginnings, we've embarked on an extraordinary journey of growth, embracing a contemporary business model rooted in quality, market foresight, and efficiency through meticulous management. Our ethos is built upon prioritizing technology, adhering to standardized management, delivering exceptional quality, and ensuring customer satisfaction. With integrity as our bedrock, quality as our strength, and customer satisfaction as our unwavering goal, we strive for excellence, continuous innovation, and to build a brand that commands trust. Our heartfelt gratitude extends to all our esteemed customers for their unwavering support and loyalty. Together with Senhang Technology, we are poised to craft a brighter future, hand in hand!
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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