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Industrial High Voltage Disconnect Switch Electrical Circuit isolation Used For Isolating With Easy Operation

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Industrial High Voltage Disconnect Switch Electrical Circuit isolation Used For Isolating With Easy Operation

Country/Region china
Categories Manufacturing & Processing Machinery Processing Services
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Product Details

Industrial High Voltage Disconnect Switch Electrical Circuit isolation Used For Isolating With Easy Operation

 

 

 

Product Description:


 

High voltage disconnect switch is a type of electrical switch used in high voltage power systems to isolate sections of the network for maintenance or safety purposes. The switch is typically mounted on a pole or other support structure and is used to disconnect an overhead power line from the rest of the system.

High voltage disconnect switchEs are designed to handle high voltages and currents and are often installed in outdoor locations. They consist of a set of stationary and movable contacts that are separated by an air gap. When the switch is in the closed position, the contacts are in contact with each other, allowing current to flow through the circuit. When the switch is opened, the contacts are separated, interrupting the flow of current through the circuit and isolating it from the rest of the system.

High voltage disconnect switches are an important component of power system safety and reliability and are designed to operate in a variety of environmental conditions. They are often subject to rigorous testing and certification requirements to ensure that they meet industry standards for performance and safety.

High voltage disconnect switchEs are commonly used in high voltage transmission and distribution systems to isolate sections of the network for maintenance or repair work. They are also used as a safety device to protect workers from electrical hazards, such as accidental contact with live parts of the system.

 

 

Application:


 

1.Circuit isolation: High voltage electrical isolators are primarily used to isolate sections of a power system for maintenance or repair work. This allows workers to work safely on the isolated circuit without the risk of electrocution or other electrical hazards.

2.Safety: High voltage electrical isolators are also used as a safety device to protect workers and the public from electrical hazards. By isolating a circuit, High voltage electrical isolators prevent accidental contact with live parts of the system and reduce the risk of electrical accidents.

3.Fault protection: High voltage electrical isolators can also be used to protect the power system from faults, such as short circuits and overloads. By isolating a faulty section of the system, High voltage electrical isolators prevent the fault from spreading to other parts of the system and causing further damage.

4.Switching: High voltage electrical isolators can be used as a switching device to control the flow of power in a system. By opening or closing the isolator, the flow of power can be directed to different parts of the system as needed.

5.Testing: High voltage electrical isolators can also be used for testing purposes, such as to measure the voltage or current in a circuit, or to test the performance of other components in the system.

 

 

 

Operation:


 

1.Closing the Switch: When the switch is closed, the two conductive parts of the circuit are brought into contact with each other, allowing electrical current to flow through the circuit.

2.Opening the Switch: When the switch is opened, an air gap is created between the two conductive parts of the circuit, effectively isolating the section from the rest of the system. This is typically done to allow maintenance, repair, or testing work to be carried out safely.

3.Grounding the Circuit: Before any work can be carried out on the isolated section of the circuit, it is important to ground the circuit to prevent any residual electrical charge from building up. This is typically done using an earth switch or grounding electrode.

 

It is important to note that the operation of high voltage isolator switches should only be carried out by trained and qualified personnel, as they can pose a serious risk of electrical shock or injury if mishandled. In addition, it is important to follow all safety procedures and guidelines when working with high voltage equipment, including wearing appropriate protective clothing and equipment, using insulated tools, and ensuring that the area is clear of any flammable or explosive

 

 

 

Structure:


 

1.Porcelain Insulator Body: The insulator body is the main component of the isolator, and is typically made of high-strength porcelain. It is designed to provide electrical insulation between the conductor and supporting structure, and is molded into the desired shape and size.

2.Metal End Fittings: The metal end fittings are attached to the insulator body and provide a means of connecting the isolator to the conductor and supporting structure. They are typically made of galvanized steel or other corrosion-resistant material, and may be designed with special features such as clevises or ball-and-socket joints for easy installation.

3.Sealing Compound: A sealing compound is used to seal the joint between the insulator body and metal end fittings, preventing moisture and contaminants from entering the interior of the isolator.

4.Hardware: Hardware such as bolts, nuts, and washers are used to secure the metal end fittings to the insulator body and supporting structure.

Fitting Caps: Fitting caps are used to protect the metal end fittings from corrosion and damage, and may be made of plastic or other materials.

5.Additional Features: Depending on the specific application, porcelain high voltage electrical isolators may be designed with additional features such as insulating barriers, arc chutes, and earth switches to improve their performance and safety.

 

 

Condition:


 

1.The altitude does not exceed 1000m

2.The ambient air temperature: Maximum+ 40'C ;Minimum:General Area -30'C, Paramos -40 C;

3.The wind pressure does not exceed 700Pa.(corresponding to 34m/s wind speed);

4.The earthquake intensity does not exceed 8 degrees;

5.The working situation is without frequent violent vibration;

6.The installation site of ordinary type isolator should be kept away form gas, smoke chemical deposition, salt-spray fog, dust

and other explosive and corrosive maters that affect seriously insulation and conduction capability of the isolator

7.Pollution-proof type isolator is applies to severe filthy conduction area, however, it shouldn't be any explosive matters and matters causing fire

 

 

Technical Parameters:


 

Serial No.ParameterUnitData
1Rated VoltagekV12
2Rated CurrentModel No.(H)GW9-12(W)/630-20A630
(H)GW9-12(W)/1000-201000
(H)GW9-12(W)/1250-31.51250
34s Short-time withstanding currentModel No.(H)GW9-12(W)/630-20kA50
(H)GW9-12(W)/1000-2050
(H)GW9-12(W)/1250-31.580
4Rated Insulation LevelLightning surge withstand voltage(peak)Polar-to-Earth
(Positive & Negative)
kV75
Interfracture
(Positive & Negative)
85
Industrial frequency withstand voltage
(1 min)
(Effective value)
Dry Test/Wet TestPolar-to-Earth42(Dry)
34(Wet)
Interfracture48(Dry)
48(Dry)
48(Dry)
40(Wet)
5Main Circuit Resistanceμ Ω630
1000
1250
6Mechanical Life Timetimes50
50
80

 

 

 

 

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