Product Description
Comprehensive Overview
Experience unparalleled outdoor high-voltage electrical protection with our innovative Drop-out Fuse and Pull Load Drop-out Fuse. These expertly engineered devices are your strategic allies, poised on the high-voltage side of distribution transformers or woven into the essential fabric of distribution lines. They stand as impenetrable guardians, adeptly shielding against transformer and line short circuits, nimbly managing overload scenarios, and ensuring seamless current transitions for opening and loading. Witness the confluence of innovation in the drop-out fuse design, featuring a robust insulating bracket, coupled with meticulously crafted fuse tubes, anchoring static contacts with precision while allowing the moving contacts to grace the fuse tube ends. The fuse tube is a marvel of modern engineering, boasting an advanced inner arc tube paired with a resilient outer shell of phenolic paper or epoxy glass cloth. The Pull Load Drop-out Fuse elevates versatility with its auxiliary contacts and a finely honed arc chute, ensuring smooth current load transitions.
In the realm of normal operations, the drop-out fuse stands guard in a secured closed position, with the fuse tube under precise tension. At the first sign of system irregularities, the fault current acts with unmatched speed, initiating the fuse blow and sparking an arc. This dynamic arc ignites the arc tube, unleashing a torrent of gas and creating high pressure within the tube to sculpt a vertical wind path that expertly stretches and elongates the arc. As the fuse fully expends, the moving contact unlocks its potential, rotating gracefully outward, disengaging the lock mechanism, and allowing the fuse tube to descend, achieving a definitive breaking point. When the need for load pulling arises, an insulating rod elegantly extracts the moving contact while maintaining a delicate linkage with the static contact. With steady force, the auxiliary contacts part, generating an arc that dances within the hood slit. The arc cover skillfully contains the burgeoning gas, facilitating efficient arc extinguishment as the current gently approaches zero.
Applications and Compliance Standards
This exemplary product is meticulously designed for employment in 10 to 35KV distribution lines, spanning branching lines and the pivotal primary side of distribution transformers. It stands unwavering in its duty, offering steadfast protection against overloads and short circuits while ensuring the elegant separation and seamless combination of the rated load current.
Crafted with precision, this product's design is in strict adherence to the exacting JB/T8321-1996 standards for AC high-voltage fuse preparation. It aligns seamlessly with the esteemed GB15166.3-1994 standards, synonymous with high voltage fuses expulsion fuses. In instances where detailed definitions elude us, bespoke adjustments are tailored in accordance with JB/DQ2139-1986 interim technology requirements for 10 to 35KV outdoor high voltage drop fuses.
The pinnacle of high-performance outdoor high-voltage protective devices, the Drop-out Fuse Cutout and Load Switching Fuse Cutout, are meticulously crafted to seamlessly integrate with the incoming feeder of distribution transformers or lines. They play an indispensable role, safeguarding transformers and lines from short circuits and deftly managing overload conditions while adeptly handling on/off load current. The drop-out fuse cutout boasts robust insulating supports and a sophisticated fuse tube, with static contacts expertly positioned on both flanks and moving contacts affixed with precision at the fuse tube's ends. Inside the fuse tube lies a sophisticated internal arc-extinguishing tube, complemented by an outer shell of phenolic compound paper or epoxy glass. The load switching fuse cutout also features high-performance elastic auxiliary contacts and an arc-extinguishing enclosure for efficient on-off load current management.
In typical operational scenarios, the fuse link ensures the fuse tube is securely closed. Upon fault detection, the fault current rapidly melts the fuse, initiating an electric arc that heats the arc-extinguishing tube, releasing an impressive volume of gas and creating high pressure to elongate the arc within the tube. Once melted, tension in the moving contact is released, allowing the mechanism to lock and the fuse tube to gracefully drop out, transitioning to an open position. For cutout load switching, operators expertly employ 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 extended, an electric arc takes shape between them, extending within the arc-extinguishing enclosure gap. Concurrently, the arc-extinguishing mechanism expels gas to efficiently extinguish the arc as the current transitions 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. emerges as a luminous beacon of trailblazing innovation and unmatched excellence in the ever-evolving landscape of electrical integration. As a dynamic high-tech powerhouse, we proudly present a team of seasoned experts in R&D, production, and service, fortified by over 15 years of unwavering dedication and industry expertise.
Our extensive array of products includes high-voltage solid-state soft starters, advanced capacitor cabinets, versatile high and low voltage switchgear, cutting-edge gas-insulated switchgear, and robust substations. These premium-quality products are crucial in diverse sectors, including energy and chemicals, metal smelting, expansive electrical power grids, industrial production, and prestigious academic and research facilities. Moreover, our solutions empower the medical and pharmaceutical industries, support municipal commerce, enhance water conservation and hydropower initiatives, optimize traffic safety systems, and elevate both commercial and residential developments.
Rooted in a steadfast commitment to technological advancement and the philosophy of 'smart manufacturing,' we focus on attracting elite technical talent to significantly bolster our core competitive edge. Our unwavering commitment is to deliver unparalleled value to our clients, striving to establish the most esteemed brand in the industry. Since our inception, we have made remarkable progress, evolving from inception to excellence. Our journey is driven by innovation and sustained by a modern business ethos where quality is indispensable, market orientation is pivotal, reputation-driven growth takes precedence, and strategic management enhances efficiency. We adhere rigorously 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 expedite service to China's power and grid transmission and distribution sectors with unmatched speed, strength, and ambition. At our core, integrity is sacrosanct, quality is unassailable, service is paramount, and customer satisfaction is our enduring commitment. Our relentless pursuit of excellence, continual innovation, and dedication to building a trustworthy brand remain our guiding principles. Your recognition fuels our advancement. We extend heartfelt gratitude to our loyal clients for their steadfast support, and Senhang Technology looks forward to collaborating with you to craft 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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