Product Description
Comprehensive Overview
Introducing the pinnacle of outdoor high-voltage electrical protection: the Drop-out Fuse and Pull Load Drop-out Fuse. These marvels of engineering are expertly designed to reside on the high-voltage side of distribution transformers or serve as pivotal support links within distribution lines. Their mission? To act as vigilant guardians against transformer and line short circuits, deftly handle overload conditions, and ensure smooth current management during opening and loading operations. The innovative design features an insulating bracket intertwined with fuse tubes, where static contacts are firmly anchored at each end. Graceful moving contacts enhance the ends of the fuse tube, creating a harmonious balance. Equipped with a state-of-the-art inner arc tube and encased in a durable outer phenolic paper tube or an epoxy glass cloth tube, this design screams innovation. The Pull Load Drop-out Fuse elevates versatility to new heights with auxiliary contacts and a meticulously crafted arc chute, ensuring seamless current load transitions.
Under normal circumstances, the drop-out fuse stands confidently in a closed position, its fuse tube precisely tensioned. Upon detecting system faults, the fault current reacts with rapid precision, blowing the fuse and giving birth to an arc. This vibrant arc ignites the arc tube, which, in turn, decomposes a significant volume of gas. The resultant high pressure within the tube skillfully crafts a vertical wind path that elongates the arc with finesse. As the fuse blows, the moving contact releases with grace, rotating outward as the locking mechanism disengages, allowing the fuse tube to drop and achieve a definitive breaking position. During load pulling, an insulating rod is employed to draw out the moving contact, maintaining its linkage with the static contact. With continued force, auxiliary contacts part ways, generating an arc that elongates within the hood slit. The arc cover expertly contains the gas, facilitating efficient arc extinguishment as the current reaches zero.
Applications and Compliance Standards
This exceptional product is meticulously engineered for deployment across 10 to 35KV distribution lines, including branching lines and the primary side of distribution transformers. It delivers steadfast protection against overloads and short circuits while ensuring the effective separation and combination of the rated load current.
Crafted with precision, this product's design adheres to the stringent JB/T8321-1996 Method for AC high-voltage fuse preparation, aligning seamlessly with the esteemed GB15166.3-1994 standards for high voltage fuses Expulsion fuses. In cases where detailed definitions are absent, adjustments are meticulously tailored in accordance with the JB/DQ2139-1986 interim technology requirements for 10 to 35KV outdoor high voltage drop fuses.
The Drop-out Fuse Cutout and Load Switching Fuse Cutout stand as the ultimate epitome of high-performance outdoor high-voltage protective devices. Meticulously crafted to connect with the incoming feeder of distribution transformers or lines, these devices play an indispensable role in safeguarding transformers and lines from short circuit incidents and overload conditions. They adeptly handle the on/off load current with unparalleled precision. The drop-out fuse cutout boasts robust insulating supports and a fuse tube, with static contacts strategically fixed on both sides and moving contacts expertly affixed at the ends of the fuse tube. Inside, a sophisticated arc-extinguishing tube is complemented by an outer phenolic compound paper tube or epoxy glass tube. Meanwhile, the load switching fuse cutout is further enhanced with high-performance, elastic auxiliary contacts and an arc-extinguishing enclosure for efficient on/off load current switching.
During typical operational scenarios, the fuse link ensures the fuse tube remains securely shut. Upon encountering faults, the fault current swiftly melts the fuse, generating an electric arc that heats the arc-extinguishing tube. This action liberates vast volumes of gas, creating high pressure that elongates the arc within the tube. Once the fuse melts, the moving contact loses its tension, allowing the mechanism to lock and the fuse tube to gracefully drop out, transitioning to an open position. For cutout load switching, operators deftly use 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 further pulled, an electric arc forms between them, extending within the arc-extinguishing enclosure gap. Simultaneously, the arc-extinguishing mechanism expels gas to efficiently extinguish the arc as the current passes through 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 beacon of groundbreaking innovation and unparalleled excellence within the dynamic realm of electrical integration. As a vibrant high-tech enterprise, we are proud to showcase a highly experienced R&D, production, and service team, empowered by over 15 years of unwavering dedication and expertise in the industry.
Our expansive product range features high-voltage solid-state soft starters, sophisticated capacitor cabinets, both high and low voltage switchgear, state-of-the-art gas-insulated switchgear, and resilient substations. These high-caliber products are indispensable across numerous sectors, serving the energy and chemical industries, metal smelting operations, vast electrical power grids, industrial manufacturing, and prestigious universities and research institutions. Furthermore, our solutions energize the medical and pharmaceutical fields, support municipal commerce, enhance water conservation and hydropower projects, optimize road traffic systems, and elevate commercial and residential developments.
Positioned at the forefront of technological innovation, Zhejiang ChaoTai Complete Equipment Co., Ltd. embodies the spirit of 'smart manufacturing' and leads with a commitment to recruit elite technical talent, significantly amplifying our core competitive advantage. Our unwavering dedication to deliver unmatched value to our clients motivates us to aspire to become the industry's most revered brand. Evolving from inception to excellence, our journey is marked by persistent innovation and a modern business approach where quality is our lifeline, market orientation is key, reputation-driven growth is paramount, and efficiency is achieved through strategic management. We adhere to the guiding principles of 'technology as the guide, standardized management, exceptional quality, and customer satisfaction' in our quality and technical talent management, diligently working to expand our market presence. Our mission is to serve China's electric power and grid transmission and distribution sectors with increasing speed, strength, and ambition. At the foundation of our operations, integrity is non-negotiable, quality is inviolable, service is sovereign, and customer satisfaction is our enduring pledge. Our relentless pursuit of excellence and constant innovation underpin our efforts to build a trustworthy brand. Your recognition propels our progress, and we extend our heartfelt gratitude to all our loyal clients for their enduring support. Senhang Technology eagerly anticipates partnering with you to shape 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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