Product Description
General
Introducing the cutting-edge drop-out fuse and pull load drop-out fuse, quintessential outdoor high-voltage protective devices designed to be the vanguard in safeguarding electrical systems. These robust fuses are typically stationed on the high-voltage side of distribution transformers or as a crucial link in distribution lines. Their primary mission? To provide unrivaled protection against transformer and line short circuits, repel overloads, and manage open-circuit load currents with precision. Constructed with resilience in mind, they boast an insulating bracket and fuse tubes, with static contacts firmly anchored at both ends, and moving contacts expertly mounted at the fuse tube's terminus. The sophisticated design of the fuse tube features an inner arc tube enveloped by an outer layer of phenolic paper or an epoxy glass cloth tube. The pull load drop-out fuse is further enhanced with flexible auxiliary contacts and a sophisticated arc chute to ensure unparalleled operational flexibility during open or co-load current operations.
In the realm of normal operations, the drop-out fuse epitomizes reliability, remaining steadfastly closed with the fuse tube and fuse under optimal tension. Should a system anomaly occur, the fault current swiftly melts the fuse, igniting an arc. The arc tube, subjected to intense heat, becomes a powerhouse of gas release, creating high pressure within and generating a vertical wind along the pipeline that masterfully stretches and elongates the arc. Upon fuse disintegration, the moving contact loses its grip, ingeniously triggering the locking mechanism and releasing the fuse tube into its breaking position. For load operations, an insulating rod is adeptly used to disengage the moving contact, ensuring initial contact with the static contact. As the rod continues its pull, it elegantly separates the auxiliary contacts, with the arc forming and gracefully elongating within the hood slit. The arc cover’s contained gas masterfully aids in arc extinction as the current finds its zero point.
Use and Standards
This exceptional product is meticulously engineered for deployment across 10 ~ 35KV distribution lines, branching lines, and the primary front of distribution transformers, offering unparalleled protection against overloads and short circuits. It expertly manages the delicate balance of separating and uniting rated load currents, ensuring seamless operations.
Our product model aligns with the esteemed JB/T8321-1996 Method for the preparation of type AC high-voltage fuses, crafted to meet the stringent requirements of GB15166.3-1994 standards for high voltage fuses expulsion fuses. In instances where standards ambiguously define key parameters and configurations, we take the initiative to refine them in line with JB/DQ2139-1986, the definitive guide for 10 ~ 35KV outdoor high voltage drop fuses interim technology, ensuring utmost precision and compliance.
Drop-out fuse cutouts and load switching fuse cutouts stand as the sentinel outdoor high voltage protective devices. Strategically integrated with the incoming feeder of distribution transformers or distribution lines, they provide indispensable coverage against short circuits and overloads, while deftly managing on/off load currents. The drop-out fuse cutout features insulate insulator supports paired with a fuse tube, static contacts are meticulously secured on both sides of the insulator support, and moving contacts are installed at the fuse tube's ends. The fuse tube's construction is a marvel, with an inner arc-extinguishing tube enveloped by an outer phenolic compound paper tube or epoxy glass tube. The load switching fuse cutout is further refined with enforced elastic auxiliary contacts and an arc-extinguishing enclosure, expertly managing on-off loading current with precision and ease.
In the domain of normal working conditions, the fuse link ensures the fuse tube is securely held in a closed position, symbolizing reliability. Upon encountering system faults, the fault current acts swiftly, melting the fuse, and producing an electric arc that heats the arc-extinguishing tube. This process releases a substantial amount of gas, generating high pressure that propels the arc along the tube with finesse. As the fuse link melts away, the moving contact loses its tension, causing the mechanism to lock, and the fuse tube gracefully drops out, opening the cutout. For cutout load switching, operators skillfully employ an insulating operating bar to gently pull the moving contact. Initially, the main contact and auxiliary static contact remain engaged; however, further pulling disengages the auxiliary contacts, creating an electric arc that elegantly elongates within the arc-extinguishing enclosure gap. Concurrently, the arc-extinguishing mechanism releases gas, effectively extinguishing the arc as the current gracefully passes 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. is a beacon of innovation and excellence in the realm of electrical integration, proudly recognized as a prestigious high-tech enterprise. With a distinguished team that excels in R&D, production, and service, we harness over 15 years of profound industry expertise to continually drive innovation and set benchmarks of success.
Our diverse and exceptional product portfolio includes high-voltage solid-state soft starters, innovative capacitor cabinets, high and low voltage switchgear, cutting-edge gas-insulated switchgear, and state-of-the-art substations. Our solutions are integral to a wide array of sectors: the dynamic energy and chemical industries, robust metal smelting operations, expansive electric power grids, and pioneering industrial manufacturing. We make a significant impact in prestigious universities, pioneering research institutions, the vibrant medical and pharmaceutical fields, and bustling municipal commerce. Additionally, we provide vital support to the water conservancy and hydropower sectors, comprehensive road traffic systems, and a broad spectrum of commercial and residential infrastructures.
Driven by an unwavering quest for technological advancement and a visionary 'smart manufacturing' ethos, we are steadfast in attracting top-tier technical talent, thereby enhancing our core competitiveness. This commitment underscores our dedication to delivering unparalleled value to our clients, as we strive to position our brand at the forefront of the industry. Our remarkable journey from modest beginnings to industry prominence is a testament to our ethos of innovation, grounded in a business model that thrives on quality for survival, market insight for growth, reputation for development, and efficiency through meticulous management. Our enduring promise is to make technology our guiding force, maintain stringent management standards, deliver superior quality, and ensure customer satisfaction. This strengthens our market presence and propels us towards ambitious goals in serving China's electric power and grid sectors. Integrity is our bedrock, quality is our hallmark, service is our defining trait, and customer satisfaction is our perpetual ethos. Our steadfast objectives encompass the relentless pursuit of excellence, continuous innovation, and crafting a brand that inspires trust. We deeply appreciate the recognition from our esteemed customers, to whom we extend our heartfelt gratitude for their enduring support and loyalty. Together with Senhang Technology, we look forward to forging a radiant future, hand in hand!
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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