high voltage ceramic porcelain fuse drop out fuse cut out

SMICO porcelain cutout fuse are designed for use in on power and utility overhead distribution systems to provide over-current protection and a visible indication of fuse operation. Over-Current protection safeguards and electric system from excessive currents produced by abnormal conditions such as line or equipment overloads, faults, or equipment failures. Our porcelain cutouts have a solid core, bird-proof, one-piece porcelain body.

• Excellent in arid conditions
• Long history of proven performance 

Options

• Brackets- NEMA and Extended Versions
• Conductor Connectors- Parallel Groove or Eye-bolt designs
• Blade designs for switching applications

Installing the Fuse Link (Fuse Cutouts Without Arc-Shortening Rod)

Step 1.Hand tighten the contact button on the fuse link and carefully straighten the cable.

Step 2.Remove the cap from the upper ferrule of the fuse-tube assembly. Slide the fuse link, cable end first, into the top of the fuse-tube assembly and retrieve it at the lower end.

Step 3.Replace the fuse-tube cap on the fuse-tube upper ferrule and tighten the cap securely using a wrench. Loosen the cable clamping nut on the trunnion. See Figure 2a.

Step 4.Rotate the flipper fully about its pivot until it reaches its stop (firm resistance is felt). See Figure 2a. Hold the flipper in this position, and feed the cable through the flipper channel and around the threaded stud in a clockwise direction as shown in Figure 2b. Maintain tension on the fuse-link cable and firmly tighten the cable clamping nut, using a wrench. Do not overtighten the cable clamping nut.

Step 5.Clip excess cable to within 1/2 inch (13 mm) of the nut.

Installing and Closing the Fuse Tube

Only qualified persons should operate, inspect, or maintain a fuse cutout. Such qualified persons should wear protective equipment such as rubber gloves, hard hat, safety glasses, flash-clothes, etc., in accordance with established safety practices and be trained in their proper care.

Step 1.After installing the fuse link as described in the foregoing sections, insert the prong of a hookstick into the opening under the trunnion casting band. Or, as an alternate, insert the prong in the keyhole opening in the trunnion casting band.

Step 2.Guide the fuse tube into the fuse cutout hinge as shown in Figure 3 and disengage the hookstick.

Step 3.Insert the prong of the hookstick in the pull ring on the upper ferrule of the fuse tube and swing the fuse tube to within approximately 45º of the fully closed position. Then, while looking away from the fuse cutout, drive the fuse tube to the closed position using a vigorous thrust. Carefully disengage the hookstick taking care to avoid opening the fuse tube.

• Solid Core, bird-proof, one piece porcelain body
• New heavy-duty top contact with dimple prevents over-closure
• Non-expendable fuse-tube cap construction eliminates extra expense of fuse-tube cap replacement

Porcelain Dropout Fuse Cutouts are used in various applications within the power transmission and distribution industry. Here are the main application places:

1. Overhead Distribution Lines: Porcelain Dropout Fuse Cutouts are widely used in overhead power lines to protect transformers, capacitor banks, and branch lines from faults and overloads.

2. Transformers: These fuse cutouts are installed on distribution transformers to provide overcurrent protection and to isolate the transformer in case of a fault.

3. Capacitor Banks: They are used to protect capacitor banks in distribution networks by disconnecting them during fault conditions.

4. Branch Circuits: Fuse cutouts are employed on branch circuits to protect the equipment and cables from damage due to overcurrents or faults.

5. Renewable Energy Installations: They are increasingly used in renewable energy systems, such as solar and wind farms, to protect the equipment and ensure safe operation.

6. Industrial and Commercial Facilities: Porcelain Dropout Fuse Cutouts are also utilized in industrial and commercial facilities for protecting various electrical equipment and ensuring reliable power supply.

These applications highlight the importance of Porcelain Dropout Fuse Cutouts in maintaining the safety and reliability of electrical distribution systems.

01. Manufacturer Offering Competitive Pricing and High Quality.

We are a direct-sales manufacturer offering both competitive pricing and high-quality products, helping you gain a foothold in the market—specifically in Wenzhou, Zhejiang Province, China. You are warmly invited to visit our company.

02. OEM/ODM Services.

We are a manufacturer backed by an exceptional and highly collaborative team.

03. Standard Payment Terms.

We accept various payment methods, including Telegraphic Transfer (TT) in advance, Letters of Credit (L/C), Western Union, and others. Please feel free to contact us if you have any questions!

04. Warranty Period.

1.5 years. Any quality issues will be resolved through free replacements included with your next order.

05. Free Samples.

Yes, we provide samples of smaller products for your quality assessment; you are only required to cover the courier fees.