Product Description
Comprehensive Overview of Excellence
The Drop-out Fuse and Pull Load Drop-out Fuse are masterfully crafted as the pinnacle of outdoor high-voltage electrical protection solutions. These distinguished devices, embodying expert engineering, are strategically positioned on the high-voltage side of distribution transformers or as essential components in distribution lines. They serve as indispensable guardians, adeptly protecting against transformer and line short circuits, and overload scenarios, while facilitating seamless current management for opening and loading. With a visionary design that celebrates innovation, the drop-out fuse comprises an insulating bracket and fuse tubes, securely anchoring static contacts at each end. Moving contacts are elegantly attached to the ends of the fuse tube, showcasing a remarkable synergy of form and function. The fuse tube features a cutting-edge internal arc tube, complemented by a resilient outer phenolic paper tube or epoxy glass cloth tube. The Pull Load Drop-out Fuse stands out for its enhanced versatility, with auxiliary contacts and a meticulously engineered arc chute that ensures smooth current load transitions, setting a new standard in electrical protection.
In normal operation, the drop-out fuse is steadfastly secured in a closed position, with the fuse tube under precise tension. Upon detection of system faults, the fault current swiftly acts, blowing the fuse and generating a vigorous arc. This intense arc ignites the arc tube, decomposing a vast volume of gas that creates high pressure within the tube, forging a vertical wind path which skillfully elongates the arc. As the fuse blows, the moving contact releases, rotating outward with graceful precision as the locking mechanism disengages, allowing the fuse tube to drop decisively into a breaking position. For load pulling, an insulating rod expertly draws out the moving contact while maintaining a connection with the static contact. With persistent force, auxiliary contacts separate, generating an arc that extends within the hood slit. The arc cover contains the gas adeptly, facilitating efficient arc extinguishment as the current reaches zero, ensuring superior operational efficiency and safety.
Applications and Compliance Standards of Excellence
This exceptional product is meticulously engineered for deployment in 10 to 35KV distribution lines, encompassing branching lines as well as the primary side of distribution transformers. It offers steadfast protection against overloads and short circuits, ensuring effective separation and combination of the rated load current with unparalleled reliability.
Crafted with precision, this product's design rigorously adheres to the strict JB/T8321-1996 Method for AC high-voltage fuse preparation. Its parameters are carefully aligned with the prestigious GB15166.3-1994 standards for high-voltage fuses Expulsion fuses. In instances where detailed definitions are lacking, tailored adjustments are made in accordance with the JB/DQ2139-1986 interim technology requirements for 10 to 35KV outdoor high voltage drop fuses, ensuring comprehensive compliance and performance.
The Drop-out Fuse Cutout and Load Switching Fuse Cutout are the quintessence of high-performance outdoor high-voltage protective devices. Meticulously designed, they connect seamlessly with the incoming feeder of distribution transformers or lines, playing an indispensable role in safeguarding transformers and lines from short circuit incidents and overload conditions, while adeptly managing the on/off load current. The drop-out fuse cutout comprises robust insulating supports and a fuse tube, with static contacts strategically fixed at both ends and moving contacts expertly positioned at the ends of the fuse tube. The fuse tube features an advanced internal arc-extinguishing tube, enhanced by an outer phenolic compound paper tube or epoxy glass tube. The load switching fuse cutout also incorporates high-performance, elastic auxiliary contacts and an arc-extinguishing enclosure for efficient on-off load current switching, setting a new benchmark for reliability and safety.
Under typical operational conditions, the fuse link ensures the fuse tube remains securely closed. When faults arise, the fault current rapidly melts the fuse, creating an electric arc that heats the arc-extinguishing tube, releasing substantial gas volumes and creating high pressure to elongate the arc within the tube. Upon melting, the moving contact loses tension, allowing the mechanism to engage in a lock, enabling the fuse tube to gracefully drop into an open position. For cutout load switching, operators skillfully utilize an insulating operating bar to draw the moving contact. Initially, the main contact remains engaged with the auxiliary static contact. As the auxiliary contact is drawn further, an electric arc forms between them, extending within the arc-extinguishing enclosure gap. Concurrently, the arc-extinguishing mechanism expels gas, efficiently extinguishing the arc as the current transitions through zero, ensuring seamless operation and unmatched safety.
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. emerges as a trailblazer of cutting-edge innovation and unmatched prowess in the ever-evolving domain of electrical integration. As a dynamic high-tech enterprise, we take pride in unveiling a team of seasoned R&D, production, and service professionals, driven by over 15 years of steadfast dedication and industry acumen.
Our extensive product suite includes high-voltage solid-state soft starters, advanced capacitor cabinets, both high and low voltage switchgear, state-of-the-art gas-insulated switchgear, and robust substations. These superior products are vital across a multitude of sectors, serving the energy and chemical industries, metal smelting operations, expansive electrical power grids, industrial manufacturing, and elite universities and research entities. Moreover, our cutting-edge solutions invigorate the medical and pharmaceutical sectors, bolster municipal commerce, enhance water conservation and hydropower initiatives, optimize traffic control systems, and elevate both commercial and residential development projects.
Grounded in an unwavering commitment to technological innovation and the ethos of 'smart manufacturing,' we are dedicated to attracting elite technical talent to holistically elevate our core competitive edge. Our steadfast focus is on providing unparalleled value to our clients, striving to forge the industry's most esteemed brand. Our journey from inception is marked by relentless progress and innovation, fortified by a contemporary business philosophy where quality is our lifeline, market orientation is pivotal, reputation-driven growth is essential, and strategic management ensures efficiency. We adhere strictly to the guiding principles of 'technology as the guide, standardized management, exceptional quality, and customer satisfaction' in our quality and technical talent management, diligently expanding our market footprint. Our mission is to empower China's electric power and grid transmission and distribution sectors with heightened speed, strength, and ambition. At our core, integrity is irrefutable, quality is sacrosanct, service is paramount, and customer satisfaction is our eternal credo. Our relentless pursuit of excellence, unyielding innovation, and dedication to building a trustworthy brand are our enduring tenets. Your acknowledgment fuels our progress. We extend our sincere gratitude to all our loyal clients for their unwavering support, and Senhang Technology eagerly looks forward to collaborating with you to shape a brighter, more prosperous future.
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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