Product Description
Comprehensive Overview
Introducing the epitome of outdoor high-voltage electrical protection: the Drop-out Fuse and Pull Load Drop-out Fuse. These meticulously engineered devices serve as crucial defenders on the high-voltage side of distribution transformers or as integral links within distribution lines. They stand as the first line of defense against transformer and line short circuits, overloads, and enable seamless current opening and loading. Ingeniously crafted, the drop-out fuse features an insulating bracket and fuse tubes. Each end is secured with static contacts, while moving contacts are elegantly attached to the ends of the fuse tube. The construction of the fuse tube boasts a sophisticated inner arc tube paired with a durable outer phenolic paper tube or epoxy glass cloth tube. The Pull Load Drop-out Fuse further elevates functionality with auxiliary contacts and an arc chute expertly designed for smooth current load management.
In the tranquility of standard operations, the drop-out fuse holds a steadfast closed position, its fuse tube perfectly tensioned. Yet, upon detecting faults, the fault current boldly blows the fuse, igniting a powerful arc. This arc energizes the arc tube, decomposing vast gas volumes and generating formidable pressure. This expertly crafted vertical wind path stretches the arc with finesse. As the fuse blows, the moving contact releases gracefully, rotating outwards as the locking mechanism disengages, allowing the fuse tube to drop decisively. When load pulling is essential, an insulating rod is employed to draw the moving contact, maintaining a link with the static contact. With increasing force, auxiliary contacts part, generating an arc between them that stretches within the hood slit. The arc cover expertly encapsulates the gas, facilitating efficient arc extinguishment as the current descends to zero.
Applications and Compliance Standards
Meticulously designed with precision, this remarkable product is tailored for use in 10 to 35KV distribution lines, including branching lines and the primary side of distribution transformers. It delivers unwavering protection against overloads and short circuits while enabling the effective separation and integration of the rated load current.
Engineered with unparalleled precision, this product meets the stringent JB/T8321-1996 Method for AC high-voltage fuse preparation. Its parameters are in harmony with the prestigious GB15166.3-1994 standards for high voltage fuses Expulsion fuses. In cases where detailed definitions are absent, adjustments are seamlessly integrated in accordance with the JB/DQ2139-1986 interim technology requirements for 10 to 35KV outdoor high voltage drop fuses.
Elevate your high-voltage protection with the Drop-out Fuse Cutout and Load Switching Fuse Cutout. These premier outdoor devices are intentionally designed to connect with the incoming feeder of distribution transformers or lines. They serve as vital protectors against short circuits and overloads while deftly managing on/off load current. The drop-out fuse cutout features robust insulating insulator supports and a fuse tube, with static contacts fixed on both sides and moving contacts expertly installed at the tube's ends. The fuse tube showcases a sophisticated internal arc-extinguishing tube paired with an outer phenolic compound paper tube or epoxy glass tube. The load switching fuse cutout boasts elastic auxiliary contacts and an arc-extinguishing enclosure for efficient on-off load current switching.
In typical operational scenarios, the fuse link ensures the fuse tube remains securely closed. Encountering faults, the fault current swiftly melts the fuse, generating an electric arc that heats the arc-extinguishing tube, releasing substantial gas volumes and creating high pressure to stretch the arc within the tube. After melting, the moving contact loses tension, enabling the mechanism to lock and the fuse tube to drop out, transitioning smoothly to an open position. For cutout load switching, operators use an insulating operating bar to pull the moving contact. Initially, the main contact remains engaged with the auxiliary static contact. As the auxiliary contact is further engaged, an electric arc forms, elongating within the arc-extinguishing enclosure gap. Simultaneously, the arc-extinguishing mechanism expels gas, efficiently extinguishing the arc as the current passes 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. is a luminary of cutting-edge innovation and unequaled excellence in the realm of electrical integration. As a dynamic high-tech enterprise, we proudly present a seasoned R&D, production, and service team with more than 15 years of steadfast dedication and expertise. This empowers us to lead with confidence in our industry.
Our extensive array of products includes high-voltage solid-state soft starters, advanced capacitor cabinets, versatile high and low voltage switchgear, innovative gas-insulated switchgear, and robust substations. These superior quality offerings are vital across a multitude of sectors, including energy, chemical, metal smelting, expansive electrical power grids, industrial manufacturing, and eminent universities and research institutions. Moreover, our solutions invigorate the medical and pharmaceutical sectors, bolster municipal commerce, enhance water conservation and hydropower projects, optimize road traffic systems, and elevate both commercial and residential developments.
Our foundation is built upon an unwavering commitment to technological innovation and the ethos of 'smart manufacturing.' We are dedicated to attracting the finest technical talent to significantly bolster our core competitive edge. Our focus is on delivering unparalleled value to our clients and aspiring to forge the industry's most esteemed brand. From our beginnings, we have made relentless strides, growing from inception to distinction. Our journey is marked by innovation, sustained by a contemporary business philosophy where quality is our lifeblood, market orientation is essential, reputation-driven growth is crucial, and efficiency stems from strategic management. We adhere to the guiding principles of 'technology as the guide, standardized management, superior quality, and customer satisfaction' in our quality and technical talent management. Our diligent efforts aim to expand our market presence. Our mission is to serve China's electric power and grid transmission and distribution sectors with unparalleled speed, strength, and ambition. At our core, integrity remains non-negotiable, quality is sacred, service is paramount, and customer satisfaction is our timeless creed. Our relentless pursuit of excellence, continuous innovation, and unwavering commitment to building a trusted brand are our guiding principles. Your recognition fuels our progress. We extend heartfelt appreciation to all our loyal clients for their continuous support, and Senhang Technology looks forward eagerly to partnering with you to forge 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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