Portable Outdoor 1 Pole Disconnector Switch Safety Operated AC Power 1000A Vertical Group Disconnect Switches
Product Description:
The high-voltage electrical isolator, also known as a disconnect switch or an isolator switch, is an essential component in high-voltage power systems. It serves the purpose of disconnecting or isolating a specific section of an electrical circuit from its power source.
The primary function of the high-voltage electrical isolator is to physically break the electrical circuit, creating a separation between the equipment and the power source. This disconnection and isolation allow maintenance personnel to work safely on the equipment without the risk of electric shock.
Unlike a vacuum circuit breaker, the high-voltage electrical isolator does not provide arc-quenching capabilities. It is not designed to interrupt or extinguish electrical arcs that may occur during circuit switching or fault conditions.
In high-voltage power systems, the high-voltage electrical isolator is often coordinated with a vacuum circuit breaker. The circuit breaker is responsible for detecting faults and tripping to interrupt the current flow, while the disconnect isolator is operated to physically isolate the circuit and visually indicate the disconnection.
The high-voltage electrical isolator plays a critical role in ensuring the safety of maintenance personnel. Before any maintenance work is performed on electrical equipment, the disconnect isolator is operated to open the circuit and create a visible air gap. This action confirms that the equipment is de-energized and safe for maintenance activities.
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:
1.Power Grids: The overhead high voltage vertical isolator switch is a critical component in power grids, where it is used to isolate sections of the transmission line for maintenance or repair. This helps ensure that the power grid remains operational and reliable, even during maintenance or repair activities.
2.Electrical Substations: The overhead high voltage vertical isolator switch is also commonly used in electrical substations, where it is used to isolate individual transformers or other equipment for maintenance or repair. This helps ensure that the substation remains operational and reliable, even during maintenance or repair activities.
3.Renewable Energy Systems: The overhead high voltage vertical isolator switch is also used in renewable energy systems, such as wind and solar power plants, to isolate sections of the transmission line for maintenance or repair. This helps ensure that the renewable energy system remains operational and reliable, even during maintenance or repair activities.
Operation:
1.Visual indicators: High voltage disconnect switches may feature visual indicators, such as position indicators or status lights, to provide clear visibility of the switch's status (open or closed). These indicators help operators quickly identify the switch's position and avoid accidental contact with an energized circuit.
2.Interlocking mechanisms: Some high voltage disconnect switches are equipped with interlocking mechanisms that prevent the switch from being opened or closed under certain conditions. For example, a switch may have a mechanical or electrical interlock that requires the circuit to be de-energized before the switch can be operated, enhancing safety.
3.Remote operation: High voltage disconnect switches can be operated remotely using control systems or devices. Remote operation minimizes the need for personnel to be in close proximity to the switch, reducing the risk of electrical hazards and improving operational efficiency.
4.Environmental durability: High voltage disconnect switches are often designed to withstand harsh environmental conditions, such as extreme temperatures, humidity, and corrosive environments. They may feature robust enclosures, sealants, and coatings to ensure reliable operation and longevity in challenging environments.
5.Fault detection and indication: Advanced high voltage disconnect switches may incorporate fault detection and indication mechanisms. These systems can detect abnormal conditions in the circuit, such as overcurrent or short circuits, and provide visual or audible alarms to alert operators of potential issues, facilitating prompt action and minimizing damage.
Condition:
1.The maximum altitude in the specified area does not exceed 1000 meters above sea level. This altitude limitation is relevant for the installation and operation of the equipment.
2.The ambient air temperature has certain limits. The maximum temperature should not exceed +40°C, and the minimum temperature can vary depending on the specific area. In general areas, the minimum temperature should not drop below -30°C, while in Paramos areas, it should not drop below -40°C.
3.The wind pressure should not exceed 700 Pascal (Pa), which corresponds to a wind speed of approximately 34 meters per second. This limit ensures that the equipment can withstand the force exerted by the wind without compromising its functionality or structural integrity.
4.The earthquake intensity should not exceed 8 degrees. This refers to the maximum intensity of seismic activity that the equipment can withstand without being damaged. The specific scale used to measure earthquake intensity may depend on the region or country.
5.The working environment should be free from frequent violent vibrations. This requirement ensures that the equipment remains stable and operational under normal operating conditions. Excessive vibrations can affect the performance and lifespan of the isolator.
6.Ordinary-type isolators should be installed in locations that are kept away from gas, smoke, chemical deposition, salt-spray fog, dust, and other explosive or corrosive substances. These materials can have detrimental effects on the insulation and conduction capabilities of the isolator, potentially compromising its performance and safety.
7.Pollution-proof type isolators are designed for use in areas with severe contamination. However, even in such areas, there should be no presence of explosive substances or materials that can cause fire. This requirement ensures that the isolator remains safe and functional despite the challenging environmental conditions.
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
|
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Portable Outdoor 1 pole Disconnector Switch Safety Operated AC Power 1000A Vertical Group Disconnect Switches Images
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