Product Description
Comprehensive Overview
Step into the world of advanced electrical protection with the Drop-out Fuse and Pull Load Drop-out Fuse, the ultimate guardians dedicated to outdoor high-voltage defense. Engineered with remarkable precision, these devices find their place on the high-voltage side of distribution transformers or as essential links in distribution lines, providing indispensable defense against transformer and line short circuits, and overloads while facilitating smooth current opening and loading. The drop-out fuse is a masterpiece of design, featuring an insulating bracket paired with meticulously crafted fuse tubes. Static contacts are steadfastly attached at each end, while the moving contacts are elegantly integrated into the ends of the fuse tube. This construction is enhanced by an inner arc tube of sophisticated design, harmonized with a robust outer phenolic paper tube or epoxy glass cloth tube. The Pull Load Drop-out Fuse further distinguishes itself with superior flexibility, showcasing auxiliary contacts and an arc chute precisely crafted for flawless current load management.
In routine operations, the drop-out fuse maintains a locked and closed state, with the fuse tube precisely tensioned to perfection. When system faults arise, the fault current springs into action, blowing the fuse and forming an arc. This intense arc ignites the arc tube, triggering the release of substantial gas volumes and generating high pressure within the tube that masterfully elongates and stretches the arc into a vertical wind path. As the fuse is activated, the moving contact gracefully releases, rotating outward in a choreographed motion as the locking mechanism disengages, allowing the fuse tube to drop into a conclusive breaking position. When load pulling is required, an insulating rod elegantly draws out the moving contact while retaining connection with the static contact. As force is applied, auxiliary contacts separate gracefully, producing an arc between them that stretches precisely within the hood slit. The arc cover expertly contains the gas, facilitating the efficient extinguishment of the arc as the current reaches zero, ensuring optimal safety and control.
Applications and Compliance Standards
Engineered with meticulous attention, this illustrious product is tailored for deployment in 10 to 35KV distribution lines, embracing branching lines and the primary side of distribution transformers. It delivers unwavering protection against overloads and short circuits, while adeptly enabling the seamless separation and combination of rated load current, ensuring operational excellence and security.
This product is a marvel of precision engineering, conforming to the stringent JB/T8321-1996 Method for AC high-voltage fuse preparation. Its design aligns perfectly with the prestigious GB15166.3-1994 standards for high voltage fuses Expulsion fuses. In scenarios where detailed definitions are absent, adjustments are meticulously crafted in accordance with the JB/DQ2139-1986 interim technological guidelines for 10 to 35KV outdoor high voltage drop fuses, ensuring unparalleled reliability and compliance.
The Drop-out Fuse Cutout and Load Switching Fuse Cutout stand as the pinnacle of outdoor high-voltage protection. Intentionally crafted to seamlessly connect with incoming feeders of distribution transformers or lines, they play a crucial role in safeguarding transformers and lines from short circuit incidents and overload conditions while masterfully managing on/off load current. The drop-out fuse cutout features resilient insulating insulator supports and a fuse tube, with static contacts firmly affixed on either side and moving contacts expertly installed at the fuse tube ends. The fuse tube boasts a sophisticated internal arc-extinguishing tube, complemented by an outer phenolic compound paper tube or epoxy glass tube. The load switching fuse cutout is further enhanced with elastic auxiliary contacts and an arc-extinguishing enclosure, ensuring efficient on-off load current switching, providing unmatched protection and performance.
In typical operational scenarios, the fuse link ensures that the fuse tube remains securely and tightly closed. Upon the occurrence of faults, the fault current efficiently melts the fuse, generating a powerful electric arc that heats the arc-extinguishing tube. This process releases substantial gas volumes, creating high pressure designed to elongate the arc within the tube. Following the melting process, the moving contact loses tension, empowering the mechanism to lock and allowing the fuse tube to drop, transitioning to an open position. For cutout load switching, operators utilize an insulating operating bar to draw out the moving contact. Initially, the main contact, paired with the auxiliary static contact, remains engaged. As the auxiliary contact is further drawn, an electric arc elegantly forms between them, stretching within the arc-extinguishing enclosure gap. Simultaneously, the arc-extinguishing mechanism efficiently expels gas, mastering the arc extinguishment as the current passes through zero, ensuring smooth and reliable 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. emerges as a shining beacon of pioneering innovation and unmatched excellence in the realm of electrical integration. As a dynamic high-tech enterprise, we boast a seasoned R&D, production, and service team, fortified by over 15 years of steadfast commitment and industry expertise.
Our extensive product suite encompasses high-voltage solid-state soft starters, advanced capacitor cabinets, both high and low voltage switchgear, cutting-edge gas-insulated switchgear, and robust substations. These superior products are vital across diverse sectors, from energy and chemical industries to metal smelting, expansive electrical power grids, and industrial manufacturing. They also power renowned universities and research institutions, energize medical and pharmaceutical realms, aid municipal commerce, bolster water conservation and hydropower initiatives, streamline road traffic systems, and transform commercial and residential infrastructures.
With a steadfast commitment to technological innovation and 'smart manufacturing,' we are devoted to attracting premier technical talent to significantly amplify our core competitive edge. Our unwavering aim is to deliver unparalleled value to our clients, aspiring to sculpt the industry's most esteemed brand. From our inception, we have advanced relentlessly, evolving from inception to excellence. Our path is marked by innovation and underpinned by a modern business ethos, where quality is our lifeline, market orientation is critical, reputation-driven growth is essential, and efficiency is achieved through strategic management. We firmly adhere to principles of 'technology as the guide, standardized management, exceptional quality, and customer satisfaction' in quality and technical talent management, striving to expand our market footprint. Our mission is to serve China's electric power and grid transmission and distribution sectors with elevated speed, vigor, and ambition. At our core, integrity is non-negotiable, quality is sacred, service is paramount, and customer satisfaction is our enduring vow. Our relentless pursuit of excellence, ceaseless innovation, and commitment to forging a trustworthy brand are our guiding tenets. Your acknowledgment propels our progress. We express our sincere gratitude to all our loyal clients for their unwavering support, and Senhang Technology eagerly looks forward to collaborating with you to construct 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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