1250A HV High Voltage Electrical Switch 36kV Ceramic steel
Brand Name:HengAnshun
Model Number:GW9-10/1000A
Minimum Order Quantity:3units
Delivery Time:10 work days
Place of Origin:China
Price:USD195/Unit Based on EXW
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Product Details
Easy Operation High Voltage Electrical Isolator Porcelain/Steel Made Used For Substation Group Disconnect Switches
Product Description:
A high voltage electrical isolator is an electrical switch that is designed to isolate a section of an electrical network or system from the rest of the system for maintenance or repair purposes. It is typically used in high voltage power transmission and distribution systems.
The switch is designed to open and close under normal or abnormal conditions, such as a fault or overcurrent. When the switch is open, it physically disconnects the section of the system from the rest of the network, preventing the flow of electricity to that section.
High voltage disconnect switches are typically designed to operate at voltages between 600 volts and 765,000 volts, and they can be operated manually or automatically. They are typically installed in substations or on power poles, and they are an important component of the electrical grid infrastructure.
Feature:
1.High Voltage Rating: High voltage isolator switches are designed to withstand high levels of voltage, typically ranging from several thousand volts to several hundred thousand volts.
2.Robust Construction: High voltage isolator switches are typically made of materials that are highly resistant to electrical arcing, corrosion, and other forms of damage, such as porcelain or polymer.
3.Arc Chutes: Many high voltage isolator switches are designed with arc chutes, which help to dissipate the heat generated by electrical arcing and prevent damage to the switch.
4.Earth Switch: Some high voltage isolator switches are equipped with an earth switch, which provides an additional level of safety by grounding the isolated section of the circuit.
5.Interlocking Mechanism: To prevent accidental closure of the switch while maintenance work is being carried out, many high voltage isolator switches are equipped with an interlocking mechanism that prevents the switch from being closed until all safety procedures have been followed.
6. Visual Indicators: High voltage isolator switches may also include visual indicators, such as lights or flags, that provide a clear indication of whether the switch is in the open or closed position.
Application:
High voltage disconnect switches are essential components in power transmission and distribution systems, as they allow for the isolation of specific sections of the network for maintenance or repair work. They can also be used to isolate sections of the network in the event of a fault or other abnormal condition.
These switches are designed to handle high voltages and currents, and are typically constructed from durable and robust materials such as stainless steel, aluminum or copper. They are designed to withstand harsh environmental conditions, such as extreme temperatures, high winds, and heavy rainfall.
There are several types of high voltage disconnect switches, including air-break switches, oil-immersed switches, and gas-insulated switches. Air-break switches are the most common type, and they work by using a set of contacts that physically separate when the switch is opened. Oil-immersed switches are typically used in high voltage applications and are filled with oil to prevent arcing when the switch is opened. Gas-insulated switches use sulfur hexafluoride gas to insulate the switch contacts, which allows for smaller and more compact switch designs.
High voltage disconnect switches must be operated and maintained by qualified personnel who have received proper training. Safety procedures must be followed when working with these switches, including the use of appropriate personal protective equipment and following lockout/tagout procedures to prevent accidental energization of the equipment. Regular maintenance and testing of high voltage disconnect switches is also important to ensure that they are functioning properly and are safe to use.
Safety Risks:
1Electrical shock: High voltage disconnect switches can deliver a potentially lethal electric shock if they are not handled properly. This can happen if the switch is not properly isolated before it is opened or if there is a fault in the equipment.
2Arc flash: When high voltage disconnect switches are opened, an arc flash can occur, which can release a significant amount of energy in the form of heat, light, and pressure. This can cause burns, eye damage, and other injuries.
3Equipment failure: High voltage disconnect switches can fail if they are not properly maintained or if they are overloaded. This can lead to equipment damage, electrical fires, and other hazards.
4Environmental hazards: High voltage disconnect switches are often located in outdoor environments, where they can be exposed to extreme weather conditions, such as high winds, heavy rain, and lightning strikes. These conditions can create additional safety risks for personnel who are operating or maintaining the equipment.
Conditions:
1.The maximum altitude for installation should not exceed 1000m.
2.The ambient air temperature should not exceed +40'C, and in general areas, it should not fall below -30'C. In Paramos areas, it should not fall below -40'C.
3.The wind pressure should not exceed 700Pa, corresponding to a wind speed of 34m/s.
4.The isolator should be able to withstand earthquakes of up to 8 degrees in intensity.
5.The isolator should be installed in a location where there is no frequent violent vibration.
6.For ordinary type isolators, they should be kept away from gas, smoke, chemical deposition, salt-spray fog, dust, and other explosive and corrosive materials that can seriously affect the isolator's insulation and conduction capability.
7.Pollution-proof type isolators are suitable for use in severely filthy conduction areas, but they should not be installed in areas with any explosive or fire-causing materials.
Technical Parameters:
| Serial No. | Parameter | Unit | Data | |||||||||
| 1 | Rated Voltage | kV | 12 | |||||||||
| 2 | Rated Current | Model No. | (H)GW9-12(W)/630-20 | A | 630 | |||||||
| (H)GW9-12(W)/1000-20 | 1000 | |||||||||||
| (H)GW9-12(W)/1250-31.5 | 1250 | |||||||||||
| 3 | 4s Short-time withstanding current | Model No. | (H)GW9-12(W)/630-20 | kA | 50 | |||||||
| (H)GW9-12(W)/1000-20 | 50 | |||||||||||
| (H)GW9-12(W)/1250-31.5 | 80 | |||||||||||
| 4 | Rated Insulation Level | Lightning surge withstand voltage(peak) | Polar-to-Earth (Positive & Negative) | kV | 75 | |||||||
| Interfracture (Positive & Negative) | 85 | |||||||||||
| Industrial frequency withstand voltage (1 min) (Effective value) | Dry Test/Wet Test | Polar-to-Earth | 42(Dry) 34(Wet) | |||||||||
| Interfracture | 48(Dry) | |||||||||||
| 48(Dry) | ||||||||||||
| 48(Dry) 40(Wet) | ||||||||||||
| 5 | Main Circuit Resistance | μ Ω | 630 | |||||||||
| 1000 | ||||||||||||
| 1250 | ||||||||||||
| 6 | Mechanical Life Time | times | 50 | |||||||||
| 50 | ||||||||||||
| 80 | ||||||||||||
1250A HV High Voltage Electrical Switch 36kV Ceramic steel
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