Product Description
Comprehensive Overview
Master the art of outdoor high-voltage electrical protection with the Drop-out Fuse and Pull Load Drop-out Fuse, the pinnacle of precision-engineered safeguards. Perfectly positioned on the high-voltage side of distribution transformers or as essential links in distribution lines, these fuses are your first line of defense against transformer and line short circuits and overload conditions. They facilitate seamless current operations with ease and sophistication. Ingeniously crafted, each drop-out fuse features an insulating bracket and fuse tubes, with static contacts firmly anchored at each end, and moving contacts elegantly fitted to the fuse tube ends. The innovative design includes an advanced inner arc tube married to a robust outer phenolic paper tube or epoxy glass cloth tube. Meanwhile, the Pull Load Drop-out Fuse dazzles with its enhanced flexibility, boasting auxiliary contacts and an arc chute designed for fluid current load operations and optimal performance.
In normal operations, the drop-out fuse is held securely in place, the fuse tube taut and poised. However, upon detecting faults, the swift fault current triggers the fuse, creating a powerful arc that ignites the arc tube. This ignition decomposes large gas volumes, producing high pressure to form a vertical wind path that stretches and elongates the arc. As the fuse blows, moving contacts are gracefully released, unlocking the mechanism and allowing the fuse tube to drop decisively into a breaking position. For load pulling requirements, an insulating rod draws out the moving contact while maintaining the static contact connection. With sustained force, auxiliary contacts separate, producing an arc that stretches within the slit of the hood. The arc cover skillfully contains the gas, ensuring efficient arc extinguishment at zero current for optimal safety.
Applications and Compliance Standards
This distinguished product is meticulously designed for strategic deployment in 10 to 35KV distribution lines, encompassing branching lines and the primary side of distribution transformers. It assures unwavering protection against overloads and short circuits while facilitating the efficient separation and combination of rated load currents with exceptional reliability.
The meticulous design of this product complies with the exacting JB/T8321-1996 Method for AC high-voltage fuse preparation. Its parameters are harmonized with the esteemed GB15166.3-1994 standards for high voltage fuses Expulsion fuses. In cases where specific definitions are absent, adjustments are crafted following the JB/DQ2139-1986 interim technology requirements for 10 to 35KV outdoor high voltage drop fuses to ensure superb performance.
Discover unparalleled protection with the Drop-out Fuse Cutout and Load Switching Fuse Cutout, the elite outdoor high-voltage protective devices meticulously designed for optimal performance. Engineered to connect with incoming feeder lines of distribution transformers, these devices are indispensable for safeguarding against short circuits and overloads, while proficiently managing on/off load currents. The drop-out fuse cutout features sturdy insulating supports and a fuse tube, with static contacts fixed at each side and moving contacts expertly installed at the ends. Its sophisticated fuse tube design incorporates an internal arc-extinguishing tube and an outer phenolic compound paper tube or epoxy glass tube. The load switching fuse cutout further includes elastic auxiliary contacts and an arc-extinguishing enclosure for optimal on-off load current switching.
In typical scenarios, the fuse link keeps the fuse tube securely closed. When a fault arises, the fault current swiftly melts the fuse, generating an arc that heats the arc-extinguishing tube, releasing significant gas volumes and creating high pressure to elongate the arc. Once melted, the moving contact loses tension, unlocking the mechanism and allowing the fuse tube to drop into an open position. For cutout load switching, operators use an insulating bar to pull the moving contact. Initially, the main contact remains engaged with the auxiliary static contact. As it continues to pull, an arc forms between the contacts, elongating within the arc-extinguishing enclosure. Simultaneously, the arc-extinguishing mechanism releases gas to efficiently extinguish the arc as the current crosses zero, ensuring smooth operation and 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. proudly stands as a hallmark of revolutionary innovation and unmatched excellence in the realm of electrical integration. As a dynamic high-tech enterprise, we boast a specialized team in R&D, production, and service, backed by over 15 years of steadfast dedication and industry expertise.
Our extensive array of products includes high-voltage solid-state soft starters, advanced capacitor cabinets, a spectrum of high and low voltage switchgear, cutting-edge gas-insulated switchgear, and robust substations. These premium products are vital across diverse sectors, from the energy and chemical domains to metal smelting, expansive electrical power networks, industrial manufacturing, and elite universities and research establishments. Moreover, our solutions empower the medical and pharmaceutical arenas, bolster municipal commerce, advance water conservation and hydropower projects, refine road traffic systems, and enhance commercial and residential infrastructures.
Rooted in an unwavering commitment to technological innovation and the ethos of 'smart manufacturing,' we focus on attracting premier technical talent to significantly elevate our core competitive edge. Our steadfast dedication is to deliver unparalleled value to our clients, with the ambition to forge the industry's most esteemed brand. Since our inception, we have made relentless strides, evolving from our beginnings to excellence. Our journey is marked by innovation, sustained by a modern business philosophy where quality is our lifeline, market alignment is crucial, growth driven by reputation is paramount, and efficiency achieved through strategic management. We consistently adhere to the guiding principles of 'technology leadership, standardized management, supreme quality, and customer satisfaction' in our quality and technical talent management, diligently expanding our market reach. Our mission is to ambitiously serve China's electric power and grid transmission and distribution sectors with vigor, strength, and aspiration. At our core, integrity is absolute, quality is sacred, service is paramount, and customer satisfaction is our timeless commitment. Our relentless pursuit of excellence, continuous innovation, and dedication to building a credible brand remain our guiding tenets. Your recognition fuels our journey. We express sincere gratitude to all our steadfast clients for their unwavering support and look forward with Senhang Technology to forging a brighter future together.
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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