Product Description
General
The High Voltage Fuse Cutout with Ceramic Holder stands as a pinnacle of outdoor high-voltage electrical protection. This essential device is strategically mounted on the high-voltage side of distribution transformers or distribution lines, where it serves a dual purpose: safeguarding against transformers and line short circuits, as well as overload conditions. It seamlessly manages the co-load current and ensures reliable operational integrity. Its construction includes a durable insulating bracket and a robust fuse tube, with static contacts affixed to the bracket's ends. Moving contacts are ingeniously installed on the fuse tube's extremities. The inner arc tube, complemented by an outer layer crafted from phenolic paper or epoxy glass cloth, forms the fuse tube. The load drop-out fuse is further enhanced with flexible auxiliary contacts and an arc chute, elevating its capability to manage both open and co-load currents.
During standard operation, the fuse tube is held securely in a closed position by the tension of the fuse link. When the system encounters a fault, the fault current swiftly melts the fuse, initiating an arc. The electric arc's energy causes the arc tube to decompose and release significant gas volumes, culminating in elevated internal pressure. This pressure, coupled with vertical airflow, elongates and rapidly extinguishes the arc. Upon fuse rupture, the moving contact loses its tension, triggering the locking mechanism to release the fuse tube, allowing it to pivot downwards into a breaking position. For load switching, an insulating rod disconnects the moving contact, while maintaining contact with the static contact. Continued force with the rod separates the auxiliary contacts, creating an arc between them. This arc is strategically stretched within the hood slit, where the arc cover's gas ensures its extinction as the current approaches zero.
Use and Standards
Designed for use within the primary side of 10 to 35KV distribution lines and branching transformers, this product excels in providing paramount protection against overload and short circuit conditions. It efficiently manages the separation and combination of rated load current, ensuring seamless and secure operations.
The product adheres to the JB/T8321-1996 standards for AC high-voltage fuses, with its parameters crafted in accordance with GB15166.3-1994 high voltage expulsion fuse standards. In instances where pivotal parameters and configurations lack explicit definition, modifications are made based on the JB/DQ2139-1986 requirements for 10 to 35KV outdoor high voltage drop fuses, ensuring technical precision and reliability.
Our drop-out fuse cutout and load switching fuse cutout are quintessential outdoor high voltage protective devices, seamlessly connecting with incoming feeders of distribution transformers or lines. These devices specialize in shielding transformers or lines from short circuits and overloads while efficiently managing on/off loading currents. Constructed with insulating supports and a durable fuse tube, the static contacts are rigidly affixed to the insulator support's sides, while the moving contact is stationed at the fuse tube's extremities. The fuse tube combines an inner arc-extinguishing tube with an outer phenolic compound or epoxy glass tube. The load switching fuse cutout is equipped with advanced elastic auxiliary contacts and an arc-extinguishing enclosure, enhancing its loading current management capabilities.
In day-to-day operations, the fuse link ensures the fuse tube remains tightly in a closed position. Fault conditions initiate immediate fuse melting, creating an electric arc that heats the arc-extinguishing tube, releasing copious gas and generating high pressure beneath the arc. Once the fuse link melts, the moving contact loses its tension, engaging the locking mechanism to drop the fuse tube, transitioning the cutout to an open position. For load switching during a cutout, the operator employs an insulating operating bar to maneuver the moving contact. Initially, main and auxiliary static contacts remain engaged, but as the auxiliary contact is separated, an electric arc forms. This arc is strategically extended within the arc-extinguishing enclosure gap, where gas expulsion effectively extinguishes the arc as the current nears 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 beacon in the realm of electrical integration. As a high-tech enterprise, we proudly boast a dynamic team for R&D, production, and service—a team enriched with over 15 years of profound industry expertise.
Our diverse product portfolio features high-voltage solid-state soft starters, sophisticated capacitor cabinets, versatile high and low voltage switchgear, cutting-edge gas-insulated switchgear, and state-of-the-art substations. These products have found their indispensable place across myriad sectors including energy and chemical industries, metal smelting, electric power grids, industrial manufacturing, academia, medical and pharmaceutical sectors, municipal commerce, water conservancy and hydropower, as well as road traffic and both commercial and residential domains.
Driven by relentless innovation and a visionary approach to 'smart manufacturing,' we are committed to attracting top-tier technical talent, thereby fortifying our core competencies. Our mission is to deliver unparalleled service value and to establish an industry-leading brand. In our journey from inception to excellence, we have consistently embraced a pioneering spirit. Our business ethos revolves around quality as a survival tool, market focus, reputation-driven development, and management-led efficiency. Anchored in the principles of 'technology as the guide, standardized management, exceptional quality, and customer satisfaction,' we enhance our market competitiveness with a resolute focus on serving China's electric power and grid sectors. Integrity, quality, service excellence, and customer satisfaction form the cornerstone of our philosophy. We relentlessly pursue excellence, foster continuous innovation, and are dedicated to building a brand synonymous with trust. Your support propels us forward. We extend heartfelt gratitude to all our patrons for their unwavering support and look forward to collaboratively crafting a brighter tomorrow with Senhang Technology by your side.
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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