The 35kV Cutout Fuse is a protective electrical device designed to safeguard circuits against short-circuit faults or overcurrents. When such faults occur, the fuse element (or link) housed within the device melts due to the heat generated by the excessive current, thereby automatically interrupting the circuit and protecting power equipment from damage.
1. Primary Function This type of fuse is primarily used to protect critical equipment within power systems—such as high-voltage transformers, high-voltage capacitor banks, power cables, and electric motors. In the event of a short circuit or severe overload affecting these devices, the fuse acts swiftly to interrupt the faulty circuit, preventing the fault from propagating and ensuring the safe and stable operation of the entire power system.
2. Key Features 35kV fuses are typically designed for either outdoor or indoor installation, selected based on the specific installation environment and operational requirements. Their structure comprises key components such as the fuse element, an arc-extinguishing tube, and a base. This design enables the device to effectively extinguish the electric arc generated during the interruption of fault currents, thereby preventing overvoltages that could cause secondary damage to the system.
3. Application Scenarios These fuses are predominantly utilized in power transmission and distribution systems operating at 35kV and above. Common applications include the protection of incoming and outgoing lines within substations, backup protection for main substation transformers, and the protection of high-voltage capacitor banks.
4. Working Principle When the current passing through the Cutout Fuse exceeds its rated value, the temperature of the melt increases due to the thermal effect of the current. When the temperature reaches the melting point, the melt fuses and the circuit is disconnected. At the same time, the fuse is equipped with arc extinguishing material, which can quickly extinguish the arc generated when it is disconnected, ensuring safe disconnection. It has the advantages of simple structure, reliable action and low cost. It is one of the commonly used and important protection devices in power systems.
As China 35KV Cutout Fuse Manufacturers and 35KV Cutout Fuse Company, Taizhou HuaDong Insulated Material Co., Ltd (FORMER Yangzhou Dajieshi FRP products Co., Ltd), which was founded in October in 1994.
Our company is mainly engaged in the production of FRP ROD profiles, related terminal parts and accessory products. The terminal and accessories products such as various types of composite insulators, silicone rubber insulator fittings, line fittings and so on.The epoxy fiberglass core we produce as an intermediate connector and insulating parts is widely used in all fields and many kinds of composite insulator production. The profiles and composite insulators are widely used in electric power electronics and electrical railways. In the construction, automotive and environmental protection field IHIM products arewidely sales in North and South America.Africa.Asia. Europe ete such as USA.Kenya. Korea.India, Vietnam, Iran, Russia, Germany.Romania and other countries and vast areas in our country. THIIM is becoming a well-known supplier for insulation products field globally.
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The 35kV Cutout Fuse is a protective electrical device designed to safeguard circuits against short-circuit faults or overcurrents. When such faults occur, the fuse element housed inside the device melts from the heat generated by the excessive current, automatically interrupting the circuit and protecting power equipment from damage. Taizhou HuaDong Insulated Material Co., Ltd manufactures the 35kV Cutout Fuse as part of its cutout fuse line, positioned alongside the 24kV Cutout Fuse the company also produces.
Primary Function
A 35kV Cutout Fuse from Taizhou HuaDong is primarily used to protect critical equipment within power systems. In the event of a short circuit or severe overload affecting these devices, the fuse acts swiftly to interrupt the faulty circuit, preventing the fault from propagating and ensuring safe, stable operation of the entire power system.
High-Voltage Transformers
High-Voltage Capacitor Banks
Power Cables
Electric Motors
Key Features
Taizhou HuaDong builds its 35kV fuses so they can be selected for either outdoor or indoor installation, matched to the specific installation environment and operational requirements of the project. Every unit is structured around three key components working together to interrupt a fault safely.
Fuse Element
The current-carrying link that melts once the thermal effect of an overcurrent reaches its melting point, breaking the circuit.
Arc-Extinguishing Tube
Effectively extinguishes the electric arc generated during the interruption of fault currents, preventing overvoltages that could cause secondary damage to the system.
Base
Provides the mounting structure that holds the fuse element and arc-extinguishing tube in place for indoor or outdoor installation.
Application Scenarios
Taizhou HuaDong's 35kV Cutout Fuse is predominantly utilized in power transmission and distribution systems operating at 35kV and above. In practice, buyers install this fuse in three recurring settings.
1 Protection of incoming and outgoing lines within substations
2 Backup protection for main substation transformers
3 Protection of high-voltage capacitor banks
Working Principle
When the current passing through a Cutout Fuse exceeds its rated value, the temperature of the fuse element rises due to the thermal effect of the current. Once the temperature reaches the melting point, the element fuses and the circuit is disconnected. At the same time, the fuse is equipped with arc-extinguishing material that quickly extinguishes the arc generated at the moment of disconnection, ensuring the circuit is broken safely.
Overcurrent Occurs
Current exceeds the rated value and the fuse element heats up.
Element Melts
Temperature reaches the melting point and the circuit is disconnected.
Arc Extinguished
Arc-extinguishing material quickly extinguishes the arc for a safe disconnection.
This mechanism gives the 35kV Cutout Fuse a simple structure, reliable action and low cost, which is why Taizhou HuaDong lists it as one of the commonly used and important protection devices supplied within its power systems product range.
1
Simple Structure
2
Reliable Action
3
Low Cost
Related Products from Taizhou HuaDong
24KV Cutout FuseThe lower-voltage counterpart in the same cutout fuse product line
Power FittingsMetal accessories for securing, connecting and protecting conductors and equipment
Composite InsulatorInsulating components for high-voltage power and railway applications
Insulator Core Rod / Epoxy RodFRP rod components used as the insulating core inside composite insulators
Frequently Asked Questions
Q
What equipment does a 35kV cutout fuse protect
It is primarily used to protect high-voltage transformers, high-voltage capacitor banks, power cables and electric motors from short-circuit faults and severe overloads.
Q
Can a 35kV cutout fuse be installed both indoors and outdoors
Yes. It is typically designed for either outdoor or indoor installation, with the choice made based on the specific installation environment and operational requirements.
Q
What are the main components inside a 35kV cutout fuse
Its structure comprises a fuse element, an arc-extinguishing tube and a base, working together to interrupt fault current and extinguish the resulting arc.
Q
Where are 35kV cutout fuses typically installed in a substation
Common applications include the protection of incoming and outgoing lines within substations, backup protection for main substation transformers, and protection of high-voltage capacitor banks.
Q
What happens when current exceeds the rated value of a 35kV fuse
The temperature of the fuse element rises due to the thermal effect of the current, and once it reaches the melting point the element fuses and disconnects the circuit while the arc-extinguishing material extinguishes the resulting arc.
Q
What are the advantages of using a cutout fuse for protection
A cutout fuse offers a simple structure, reliable action and low cost, which is why it remains one of the commonly used and important protection devices in power systems.
Q
What is backup protection for a substation transformer
Backup protection means the 35kV cutout fuse is installed to interrupt the circuit if the transformer experiences a fault, supporting the main protection scheme for the substation.
Q
Does Taizhou HuaDong supply cutout fuses at more than one voltage rating
Yes. Taizhou HuaDong manufactures both the 35kV Cutout Fuse and the 24kV Cutout Fuse within its cutout fuse product line.