Product Description
General
Introducing our superior outdoor high-voltage protective device, the drop-out fuse and pull load drop-out fuse, designed to be an essential shield for your electrical systems. These cutting-edge fuses play a pivotal role when installed on the high-voltage side of distribution transformers or integrated as a key component within distribution lines. They are instrumental in safeguarding against transformer and line short circuits, efficiently handling overloads, and managing open-circuit load currents. Crafted with precision, they feature an insulating bracket, fuse tubes, and static contacts securely affixed to the bracket ends, while the moving contacts are strategically mounted at the tube ends. The sophisticated fuse tube is constructed with an inner arc tube, enveloped by an outer phenolic paper tube or an epoxy glass cloth tube, ensuring durability and reliability. The pull load drop-out fuse is enhanced with flexible auxiliary contacts and an arc chute, granting unparalleled operational flexibility for handling open or co-load currents.
Under regular conditions, our innovative drop-out fuse securely maintains a closed position, with the fuse tube and link under optimal tension. Upon encountering system failure, the fault current swiftly melts the fuse, igniting an arc that triggers an expansive release of gas due to the intense heat. This sequence generates high pressure within the tube, producing a vertical draft along the pipe, effectively stretching and elongating the arc. When the fuse finally blows, the moving contact loses its tension, activating a sophisticated locking mechanism that releases the fuse tube into a breaking position. For load pulling, an insulating rod is used to disengage the moving contact, initially maintaining contact with the static contact. As the pulling continues, the auxiliary contacts separate, forming and elongating an arc within the hood slit. The ingenious design allows the gas within the arc cover to facilitate arc extinguishment when the current reaches a zero point.
Use and Standards
Our meticulously engineered product is tailored for use in 10 ~ 35KV distribution lines, branching lines, and the critical primary side of distribution transformers. Offering unmatched protection against overloads and short circuits, it handles the separation and combination of rated load currents with precision and efficiency.
The product model strictly aligns with JB/T8321-1996 standards for AC high-voltage fuse preparation. It is expertly crafted following the GB15166.3-1994 standards for high voltage fuses expulsion fuses. In instances where standards ambiguously define key parameters or configurations, precise corrections are executed per JB/DQ2139-1986 requirements for 10 ~ 35KV outdoor high voltage drop fuses interim technology, ensuring reliability and compliance.
Our drop-out fuse cutouts and load switching fuse cutouts are indispensable high voltage protective devices designed for outdoor environments. Seamlessly integrating with the incoming feeder of distribution transformers or distribution lines, they offer critical protection against short circuits and overloads, while expertly managing on/off loading currents. The drop-out fuse cutout is meticulously constructed with insulate insulator supports and a fuse tube, with static contacts securely mounted on both sides of the insulator support. Moving contacts are installed at the tube ends, with the fuse tube's architecture featuring an inner arc-extinguishing tube enveloped by an outer phenolic compound paper tube or epoxy glass tube. The load switching fuse cutout includes enforced elastic auxiliary contacts and an arc-extinguishing enclosure, adeptly managing on/off loading current with precision.
Our state-of-the-art fuse link ensures that under normal working conditions, the fuse tube is firmly secured in a closed position. During system faults, the fault current swiftly melts the fuse, generating an electric arc. This arc heats the arc-extinguishing tube, releasing significant gas that creates high pressure to drive the arc along the tube. Once the fuse link melts, the moving contact loses tension, the mechanism locks, and the fuse tube drops out, transitioning to an open position. For switching off during cutout loading, operators use an insulating operating bar to pull the moving contact. Initially, the main and auxiliary static contacts remain engaged, but further pulling disengages the auxiliary contacts, forming an electric arc that elongates within the arc-extinguishing enclosure. Simultaneously, the mechanism releases gas to extinguish the arc as the current reaches zero, ensuring safe and effective operation.
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 a pioneering force in the realm of electrical integration, celebrated as a distinguished high-tech enterprise. With an elite team specializing in research and development, production, and service, we harness over 15 years of invaluable experience to drive innovation and excellence within the industry.
Our product portfolio is truly exceptional, featuring high-voltage solid-state soft starters, capacitor cabinets, high and low voltage switchgear, advanced gas-insulated switchgear, and state-of-the-art substations. Our innovative solutions are pivotal across a multitude of industries, including the dynamic energy and chemical sectors, robust metal smelting, expansive electric power grids, and advanced industrial manufacturing. We proudly extend our reach to prestigious universities, groundbreaking research institutions, and the ever-evolving medical and pharmaceutical fields, as well as municipal commerce. Additionally, our expertise is instrumental in supporting essential water conservancy and hydropower projects, road traffic systems, and a broad spectrum of commercial and residential developments.
Driven by a relentless pursuit of technological innovation and a visionary 'smart manufacturing' philosophy, we are committed to attracting top-tier technical talent. This dedication bolsters our core competitiveness, empowering us to deliver unmatched value to our clients while aspiring to establish our brand as an industry leader. Since our inception, we have embarked on an extraordinary journey of growth, evolving from modest origins to achieving industry excellence. Our ethos is rooted in innovation, embracing a modern business model that thrives on quality for survival, market acumen for growth, reputation for development, and efficiency through meticulous management. Our unwavering promise is to prioritize technology as our guiding star, adhere to standardized management, deliver superior quality, and ensure customer satisfaction. This fortifies our market presence and propels us to serve China's electric power and grid sectors with ambitious objectives. Integrity is our bedrock, quality is our strength, service is our signature, and customer satisfaction is our unwavering commitment. Our steadfast goals are the pursuit of excellence, continuous innovation, and crafting a brand that commands trust. Your recognition fuels our journey, and we extend our deepest gratitude to all our esteemed customers for their unwavering support and loyalty. Together with Senhang Technology, we eagerly anticipate forging 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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