Product Description
General
Introducing our high-voltage outdoor saviors: the drop-out fuse and pull load drop-out fuse. These stalwart protective devices are your electric system's vigilant guardians. Strategically stationed on the high-voltage side of distribution transformers or within distribution lines, they stand as an impregnable defense against transformer and line short circuits, as well as system overloads, while expertly managing open-circuit load currents. Engineered for resilience, their design boasts an insulating bracket and fuse tubes; static contacts are immovably anchored at each end of the insulation bracket, while dynamic contacts grace the extremities of the fuse tube. Ingeniously constructed, the fuse tube houses an inner arc tube shrouded by an outer phenolic paper tube or an epoxy glass cloth tube. With operational excellence as its hallmark, the pull load drop-out fuse is enhanced by nimble auxiliary contacts and an arc chute, offering unparalleled operational flexibility, particularly when navigating open or co-load currents.
During routine operations, the drop-out fuse remains in a closed state, with the fuse tube and fuse maintaining tautness. Upon encountering a system fault, the fault current swiftly melts the fuse, giving birth to a powerful arc. The arc's intense heat generates a rapid outpouring of gas from the arc tube, escalating the pressure within. This dynamic process initiates a vertical airflow along the pipeline, skillfully stretching and elongating the arc. As the fuse blows, the tension on the moving contact dissipates, activating the locking mechanism, which then releases the fuse tube, guiding it into the breaking position. For load pulling, an insulating rod is utilized to disengage the moving contact, initially preserving its connection with the static contact. Persistent pulling with the insulating rod causes the auxiliary contacts to separate, creating and lengthening an arc within the hood slit. The gas emitted by the arc cover facilitates the arc's extinguishment as the current declines to zero.
Use and Standards
This product is a beacon of innovative design, tailored for 10 ~ 35KV distribution lines, branching lines, and the primary sides of distribution transformers. It serves as a formidable bastion of protection against overloads and short circuits, while masterfully managing the separation and union of rated load currents with ease and precision.
Adhering to the pinnacle of industry standards, our product model is in perfect alignment with the JB/T8321-1996 Method for type AC high-voltage fuses preparation. It is meticulously crafted to surpass the rigorous GB15166.3-1994 high voltage fuses expulsion fuses standards. In scenarios where standards ambiguously outline critical parameters and configurations, precise adjustments are executed in accordance with JB/DQ2139-1986 requirements for 10 ~ 35KV outdoor high voltage drop fuses interim technology, ensuring unparalleled compliance and reliability.
Drop-out fuse cutouts and load switching fuse cutouts serve as indispensable protectors for outdoor high voltage applications. Seamlessly integrated into the incoming feeder of distribution transformers or distribution lines, they provide essential defense against short circuits and overloads, effortlessly managing on/off loading currents. The drop-out fuse cutout features insulating insulator supports and a fuse tube; static contacts are securely anchored on either side of the insulator support, with moving contacts positioned at the ends of the fuse tube. The sophisticated design of the fuse tube includes an inner arc-extinguishing tube, enveloped by an outer phenolic compound paper tube or epoxy glass tube. The load switching fuse cutout boasts robust elastic auxiliary contacts and an arc-extinguishing enclosure, ensuring proficient management of on-off loading currents with unmatched efficiency.
Under optimal operating 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 copious gas. This surge in pressure propels the arc along the tube. Once the fuse link melts, the moving contact loses tension, triggering the mechanism to lock, and the fuse tube drops out, transitioning the cutout to an open state. For switch-off during cutout loading, operators employ an insulating bar to pull the moving contact. Initially, the main contact and auxiliary static contact remain engaged; however, continued pulling disengages the auxiliary contacts, generating an elongated electric arc within the arc-extinguishing enclosure gap. Simultaneously, the arc-extinguishing mechanism releases gas, ensuring the arc's extinction as the current approaches 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. is not just a company; it is a shining beacon of excellence within the intricate world of electrical integration. Proudly recognized as a prestigious high-tech enterprise, we embody a steadfast commitment to innovation, supported by an exceptionally distinguished team that excels in research and development, production, and service. With a wealth of over 15 transformative years of experience, we are at the forefront of revolutionizing the industry, consistently setting new benchmarks of excellence and pioneering advancements.
Our impressive product portfolio is a true testament to our unwavering dedication to excellence. It includes premium high-voltage solid-state soft starters, sophisticated capacitor cabinets, and versatile high and low voltage switchgear. Our cutting-edge gas-insulated switchgear is complemented by state-of-the-art substations, all meticulously tailored to meet the diverse and demanding needs of various industries. Our solutions have redefined capabilities across dynamic energy and chemical sectors, robust metal smelting, and expansive electric power grids. Our advanced offerings are also indispensable to industrial manufacturing, revered universities, pioneering research entities, and thriving medical and pharmaceutical sectors. In municipal commerce, water conservancy and hydropower, road traffic systems, and a broad spectrum of commercial and residential areas, our products deliver unparalleled reliability and efficiency, setting a new standard in performance and industry excellence.
At Zhejiang ChaoTai, our unwavering commitment to technological innovation is paired with a forward-thinking 'smart manufacturing' philosophy. This drives us to continually attract and nurture the finest technical talent, empowering us to enhance our core competitiveness. We deliver unparalleled value to our clients while solidifying our esteemed position as an industry leader. Our journey, from humble beginnings to an extraordinary path of growth, is a testament to our embrace of a contemporary business model built on quality, market foresight, and operational efficiency through meticulous management. Our ethos is deeply rooted in prioritizing technology, adhering to standardized management, delivering exceptional quality, and ensuring customer satisfaction. Integrity is our foundation, quality is our strength, and customer satisfaction is our unwavering mission. We aim to excel, innovate, and build a brand that commands trust. Our heartfelt gratitude extends to all our esteemed customers for their steadfast support and loyalty. Together with Senhang Technology, we are poised to craft a brighter future, hand in hand, creating lasting impacts and new possibilities.
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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