Product Description
Comprehensive Overview
Embark on a journey into the realm of superior electrical protection with our Drop-out Fuse and Pull Load Drop-out Fuse, the pinnacle of outdoor high-voltage safety. Masterfully designed, these essential components are strategically installed on the high-voltage side of distribution transformers or as vital links within distribution lines. They stand as the unwavering defenders against transformer and line short circuits, adeptly managing overload situations and ensuring flawless current control for seamless opening and loading operations. With a design that epitomizes cutting-edge innovation, the drop-out fuse is composed of an insulating bracket and fuse tubes, with static contacts firmly anchored at each end, while elegantly positioned moving contacts grace the extremities of the fuse tube. The fuse tube itself features an advanced inner arc tube, surrounded by a robust outer phenolic paper tube or epoxy glass cloth tube. The Pull Load Drop-out Fuse transcends expectations with its unmatched versatility, boasting auxiliary contacts and a meticulously engineered arc chute for seamless current load transitions.
In the realm of routine operations, the drop-out fuse remains steadfastly secured in a closed state, with the fuse tube precisely tensioned. However, when system anomalies are detected, the fault current reacts swiftly, detonating the fuse and giving rise to an arc. This dynamic arc ignites the arc tube, decomposing a substantial volume of gas and generating high pressure within the tube to craft a vertical wind path that skillfully stretches and extends the arc. As the fuse reaches its limit, the moving contact is released, rotating gracefully outward as the locking mechanism disengages, allowing the fuse tube to drop and achieve a definitive breaking position. When circumstances necessitate load pulling, an insulating rod is employed to extract the moving contact while retaining linkage with the static contact. With sustained force application, auxiliary contacts part ways, generating an arc that stretches within the hood slit. The arc cover proficiently contains the gas, facilitating efficient arc extinguishment as the current approaches zero.
Applications and Compliance Standards
This illustrious product has been meticulously engineered for optimal performance across 10 to 35KV distribution lines, including branching lines and the primary side of distribution transformers. It provides unwavering protection against overloads and short circuits while ensuring efficient separation and combination of rated load current, making it an indispensable component for modern electrical systems.
Crafted with precision, this product's design adheres to the rigorous JB/T8321-1996 Method for AC high-voltage fuse preparation. Its parameters are in perfect harmony with the esteemed GB15166.3-1994 standards for high voltage expulsion fuses. In situations where specific definitions are lacking, adjustments are expertly made in compliance with the JB/DQ2139-1986 interim technology requirements for 10 to 35KV outdoor high voltage drop fuses.
The Drop-out Fuse Cutout and Load Switching Fuse Cutout stand as the epitome of excellence in outdoor high-voltage protective devices. These meticulously crafted units connect seamlessly with incoming feeders of distribution transformers or lines, playing a pivotal role in protecting transformers and lines from short circuit events and overload conditions while expertly managing the on/off load current. The drop-out fuse cutout comprises rugged insulating supports and a fuse tube, with static contacts strategically fixed on both sides and moving contacts expertly affixed at the ends of the fuse tube. The fuse tube features a sophisticated internal arc-extinguishing tube, enhanced by an outer phenolic compound paper tube or epoxy glass tube. The load switching fuse cutout also includes high-performance, elastic auxiliary contacts and an arc-extinguishing enclosure for efficient on-off load current switching.
In standard operational scenarios, the fuse link guarantees the fuse tube remains securely closed. Upon encountering faults, the fault current swiftly melts the fuse, creating an electric arc that heats the arc-extinguishing tube, releasing a substantial volume of gas and generating high pressure to elongate the arc within the tube. Once melted, the moving contact loses its tension, allowing the mechanism to lock, and the fuse tube to gracefully drop out, transitioning to an open position. For cutout load switching, operators adeptly utilize 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 pulled, an electric arc forms between them, extending within the arc-extinguishing enclosure gap. Simultaneously, the arc-extinguishing mechanism expels gas to efficiently extinguish the arc as the current crosses 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. represents a paragon of groundbreaking innovation and unmatched excellence in the vibrant domain of electrical integration. As an invigorated high-tech enterprise, we proudly exhibit a highly skilled R&D, production, and service team, fueled by over 15 years of unwavering dedication and industry expertise.
Our diverse and expansive product suite includes high-voltage solid-state soft starters, advanced capacitor cabinets, high and low voltage switchgear, cutting-edge gas-insulated switchgear, and robust substations. These meticulously engineered products are vital across a multitude of sectors, empowering the energy and chemical industries, metal smelting operations, extensive electrical power grids, industrial manufacturing, and esteemed universities and research institutions. Moreover, our innovative solutions energize the medical and pharmaceutical fields, bolster municipal commerce, enhance water conservation and hydropower projects, refine road traffic systems, and elevate both commercial and residential developments.
Rooted in a steadfast commitment to technological advancement and the ethos of 'smart manufacturing,' we are resolute in attracting premier technical talent to significantly amplify our core competitive advantage. Our relentless pursuit is to deliver unparalleled value to our clients, aspiring to forge the industry's most esteemed brand. Since inception, we have diligently evolved, navigating from inception to excellence. Our journey is driven by innovation and sustained by a contemporary business philosophy, where quality is our foundation, market orientation is critical, reputation-driven growth is paramount, and efficiency is actualized through strategic management. We firmly adhere to the guiding principles of 'technology as the guide, standardized management, exceptional quality, and customer satisfaction' in our quality and technical talent management, meticulously working to broaden our market footprint. Our mission is to serve China's electric power and grid transmission and distribution sectors with increasing velocity, strength, and ambition. At our core, integrity is indispensable, quality is sacred, service is supreme, and customer satisfaction is our enduring tenet. Our unyielding quest for excellence, continuous innovation, and commitment to cultivating a trustworthy brand remain our guiding principles. Your acknowledgment propels our advancement. We extend our deepest gratitude to all our devoted clients for their unwavering support, and Senhang Technology eagerly anticipates collaborating with you to shape 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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