Product Description
General
Introducing a cutting-edge solution from Zhejiang Chaotai Complete Equipment Co., Ltd.: the drop-out fuse and pull load drop-out fuse. These outdoor high-voltage protective devices are crucial for the safeguarding of electrical systems. Typically, these fuses are installed on the high-voltage side of distribution transformers or serve as vital protective components in distribution lines. They offer robust protection against transformer and line short circuits, as well as overload scenarios, while facilitating open-circuit load currents. Engineered with an insulating bracket and fuse tubes, the device features a static contact securely mounted on both ends of the insulation bracket, while the moving contact is anchored to the ends of the fuse tube. The fuse tube itself is a marvel, crafted from an inner arc tube encased in an outer phenolic paper tube or an epoxy glass cloth tube. The pull load drop-out fuse is specially designed with flexible auxiliary contacts and an arc chute, ensuring operational flexibility when dealing with co-load current scenarios.
In the realm of normal operations, the drop-out fuse stands firm in a closed position, with the fuse tube and fuse primed under tension. However, when a system failure strikes, the fault current swiftly melts the fuse, unleashing an arc. The arc tube, subjected to the arc's intense heat, releases abundant gas, generating high pressure within the tube. This results in a powerful vertical wind along the pipeline, effectively stretching the arc. When the fuse blows, the moving contact loses its tension, engaging the locking mechanism, and releasing the fuse tube to drop into its breaking position. For pulling the load, an insulating rod is employed to disengage the moving contact, initially maintaining engagement with the static contact. Continued pulling with the insulating rod separates the auxiliary contacts, forming an arc that elongates within the hood slit. The gas within the arc cover aids in extinguishing the arc as the current reaches zero, ensuring seamless and safe operations.
Use and Standards
This meticulously designed product is ideal for application in 10 ~ 35KV distribution lines, branching lines, and the primary side of distribution transformers. It excels in providing premium protection against overloads and short circuits while expertly handling the separation and combination of rated load currents.
The product model strictly adheres to the JB/T8321-1996 Method for type AC high-voltage fuses preparation, guaranteeing reliability and safety. It is constructed in accordance with the GB15166.3-1994 high voltage fuses expulsion fuses standards, ensuring top-notch performance. In cases where standards are unclear regarding key parameters and configurations, adjustments are made in line with JB/DQ2139-1986 requirements for 10 ~ 35KV outdoor high voltage drop fuses interim technology, establishing a benchmark for excellence.
Our drop-out fuse cutouts and load switching fuse cutouts are essential outdoor high voltage protective devices, seamlessly integrated with the incoming feeder of distribution transformers or distribution lines. They provide critical protection against short circuits and overloads while efficiently managing on/off loading currents. The drop-out fuse cutout features insulate insulator supports and a fuse tube, with static contacts securely positioned on both sides of the insulator support and moving contacts at the fuse tube ends. The sophisticated architecture of the fuse tube includes an inner arc-extinguishing tube enveloped by an outer phenolic compound paper tube or epoxy glass tube. The load switching fuse cutout is distinguished by reinforced elastic auxiliary contacts and an arc-extinguishing enclosure, expertly managing on-off loading current with ease and precision.
Under regular working conditions, the fuse link ensures the fuse tube is firmly secured in a closed position. However, when system faults emerge, the fault current rapidly melts the fuse, producing an energetic arc that heats the arc-extinguishing tube and releases substantial gas, creating high pressure that propels the arc along the tube. Once the fuse link melts, the moving contact loses its tension, the mechanism locks, and the fuse tube drops out, transitioning the cutout to an open position. For switching off during cutout loading, operators utilize an insulating operating bar to pull the moving contact. At first, the main contact and auxiliary static contact remain engaged, but further pulling disengages the auxiliary contacts, generating an arc that elongates within the arc-extinguishing enclosure gap. Simultaneously, the arc-extinguishing mechanism releases gas to extinguish the arc as the current passes zero, ensuring secure and efficient operations.
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. proudly stands at the pinnacle of electrical integration as a prestigious high-tech enterprise. Our company boasts a truly distinguished team specializing in research and development, production, and exceptional service. With over 15 years of unparalleled industry experience, we continue to innovate and excel, setting new benchmarks in the field.
Our product range is a testament to our dedication to excellence, featuring high-voltage solid-state soft starters, sophisticated capacitor cabinets, and both high and low voltage switchgear. We also offer advanced gas-insulated switchgear and cutting-edge substations. These outstanding solutions have been seamlessly integrated into a multitude of sectors. Our dynamic applications span the vibrant energy and chemical industries, robust metal smelting operations, and expansive electric power grids. We also cater to cutting-edge industrial manufacturing, esteemed universities, and pioneering research institutions. Our innovation extends to the thriving medical and pharmaceutical sectors, municipal commerce, and the vital water conservancy and hydropower projects. Additionally, our expertise enhances road traffic systems and a broad spectrum of commercial and residential areas.
Guided by an unyielding commitment to technological innovation and a visionary 'smart manufacturing' philosophy, we attract the industry's finest technical talent, greatly enhancing our core competitiveness. This dedication enables us to provide unparalleled value to our clients and positions our brand as an industry leader. Since our inception, our journey has been nothing short of remarkable, evolving from humble beginnings to achieving industry excellence. Our ethos champions innovation while adhering to a contemporary business model that relies on quality for survival, market focus for growth, reputation for development, and efficiency through meticulous management. We pledge unwaveringly to prioritize technology as our guiding compass, adhere strictly to standardized management, deliver unmatched quality, and ensure total customer satisfaction. This commitment fortifies our market presence, empowering us to ambitiously serve China's electric power and grid sectors. Integrity forms our foundation, quality is our stronghold, service is our signature, and customer satisfaction is our enduring ethos. Our steadfast pursuit of excellence, continuous innovation, and aspiration to build a trusted brand are our goals. Your recognition fuels our journey, and we express heartfelt gratitude to all our esteemed customers for their unwavering support and loyalty. Together with Senhang Technology, we eagerly anticipate forging a brighter 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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