Product Description
General
Step into a world where protection meets innovation with our drop-out fuses and pull load drop-out fuses, the stalwarts of outdoor high-voltage protective devices. These devices are meticulously designed to stand guard over electric systems, ensuring safety and reliability. Strategically positioned on the high-voltage side of distribution transformers or within distribution lines, they provide unparalleled protection against transformer and line short circuits, as well as overloads, while seamlessly managing open-circuit load currents. Featuring a robust construction, each device is crafted with an insulating bracket and fuse tubes; static contacts are securely anchored at each end of the insulation bracket, while moving contacts are expertly positioned at the extremities of the fuse tube. Ingeniously engineered, the fuse tube comprises an inner arc tube, elegantly enveloped by an outer phenolic paper tube or an epoxy glass cloth tube. Designed to excel in functionality, the pull load drop-out fuse boasts agile auxiliary contacts and an arc chute, enhancing its operational flexibility, especially in handling open or co-load currents with finesse.
In the realm of daily operations, the drop-out fuse remains steadfastly closed, maintaining the gentle tension of the fuse tube and fuse. Upon the advent of a system fault, the fault current rapidly melts the fuse, unleashing an arc. The arc's intense heat catalyzes a surge of gas from the arc tube, elevating the pressure within and initiating a vertical airflow along the pipeline, adeptly stretching and elongating the arc. As the fuse blows, the tension in the moving contact is released, activating the locking mechanism, which gracefully releases the fuse tube into its breaking position. For load pulling, an insulating rod is utilized to disengage the moving contact, ensuring its initial union with the static contact remains intact. Persistent pulling with the insulating rod prompts the auxiliary contacts to disengage, forming and elongating an arc within the hood slit. The arc cover's gas plays a crucial role in extinguishing the arc as the current gracefully declines to zero.
Use and Standards
Discover an innovation in design with this product, meticulously crafted for 10 ~ 35KV distribution lines, branch lines, and the primary sides of distribution transformers. It stands as a fortress of protection against overloads and short circuits, while masterfully managing the separation and union of rated load currents. A true testament to engineering excellence.
This product exemplifies adherence to the highest standards. The model aligns with the JB/T8321-1996 Method for type AC high-voltage fuses preparation, exemplifying meticulous engineering to meet the rigorous GB15166.3-1994 high voltage fuses expulsion fuses standards. In instances where standards ambiguously define critical parameters and configurations, precision adjustments are deftly made in accordance with JB/DQ2139-1986 requirements for 10 ~ 35KV outdoor high voltage drop fuses interim technology, ensuring cutting-edge operational efficiency.
Drop-out fuse cutouts and load switching fuse cutouts are indispensable for outdoor high voltage protection. Seamlessly integrated into the incoming feeder of distribution transformers or distribution lines, they stand as a bulwark against short circuits and overloads, adeptly managing on/off loading currents with finesse. The drop-out fuse cutout features insulating insulator supports and a fuse tube; static contacts are securely positioned on either side of the insulator support, while moving contacts rest at the ends of the fuse tube. The intricate design of the fuse tube includes an inner arc-extinguishing tube, elegantly encased by an outer phenolic compound paper tube or epoxy glass tube. The load switching fuse cutout is fortified with robust elastic auxiliary contacts and an arc-extinguishing enclosure, ensuring proficient management of on-off loading currents.
In the realm of standard operating conditions, the fuse link guarantees that the fuse tube remains securely closed. When faults arise, fault currents swiftly melt the fuse, birthing an electric arc that heats the arc-extinguishing tube, releasing a torrent of gas. The ensuing high pressure propels the arc along the tube. Once the fuse link melts, the moving contact loses tension, triggering the mechanism to lock, and the fuse tube gracefully drops out, transitioning the cutout to an open state. For switching off during cutout loading, operators employ an insulating bar to pull the moving contact. Initially, the main contact and auxiliary static contact stay engaged, but further pulling disengages the auxiliary contacts, generating an electric arc that elongates within the arc-extinguishing enclosure gap. Concurrently, the arc-extinguishing mechanism releases gas, ensuring the arc is extinguished as the current gracefully declines to 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 luminary in the field of electrical integration. As a trailblazing high-tech enterprise, we are dedicated to pushing the boundaries of innovation, supported by an elite team that excels in research and development, production, and service delivery. With a legacy spanning over 15 years, we are not just participating in the industry; we are leading a revolution by setting unparalleled standards of excellence and innovation.
Our diverse product suite exemplifies our unwavering commitment to superior quality, featuring cutting-edge high-voltage solid-state soft starters, advanced capacitor cabinets, and versatile switchgear solutions both in high and low voltage. Additionally, our gas-insulated switchgear stands at the forefront of technology. We provide pioneering substations, each meticulously designed to cater to a wide array of industry requirements. Whether in the dynamic energy and chemical sectors, the robust realms of metal smelting, or the expansive networks of electric power grids, our solutions are redefining operational capabilities. Our sophisticated products also serve vital roles in industrial manufacturing, are trusted partners to prestigious universities and pioneering research entities, and play critical roles in the medical and pharmaceutical industries. Across municipal commerce, water management and hydropower, transport infrastructures, and a myriad of commercial and residential domains, our offerings are synonymous with reliability and efficiency, establishing new benchmarks in the industry.
At Zhejiang ChaoTai, a relentless pursuit of technological advancement and a visionary 'smart manufacturing' ethos propel us to attract the industry's brightest minds. This strategic edge enables us to elevate our core competitiveness, delivering unmatched value to our clientele while cementing our stature as a leader in the industry. From our modest inception, we have embarked on a remarkable trajectory of growth, evolving with a modern business framework founded on quality, strategic foresight, and managerial precision. Our guiding philosophy emphasizes the supremacy of technology, adherence to standardized management practices, exceptional quality, and unwavering customer satisfaction. Integrity is our bedrock, quality is our forte, and customer satisfaction remains our perpetual mission. We strive to excel, to innovate, and to build a brand synonymous with trust and excellence. Our deepest gratitude extends to our esteemed customers for their steadfast support and loyalty. Together with Senhang Technology, we are eager to forge a brighter future, united in our mission to innovate and excel!
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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