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GuangDong Heng AnShun Electrical Power Equipment Service Co., Ltd. |
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Single Phase Outdoor Disconnector Switch AC Power Electrical Porcelain High Voltage Overhead Group Disconnect Switches
Product Description:
Outdoor disconnector 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.
Outdoor disconnector 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.
Outdoor disconnector 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.
Outdoor disconnector 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.
Feature:
1.Switchgear Integration: High voltage isolator switches are commonly integrated into switchgear systems, which include other protective devices such as circuit breakers, fuses, and relays. This integration allows for comprehensive control and protection of the high voltage circuit, ensuring safe and efficient operation.
2.Remote Operation: Many high voltage isolator switches are equipped with remote operation capabilities, allowing them to be controlled from a centralized location. This feature enhances convenience and safety by eliminating the need for manual operation in potentially hazardous environments.
3.Arc Suppression: High voltage isolator switches are designed to suppress the formation and propagation of electrical arcs when opening or closing the switch. Arc suppression techniques, such as using arc chutes or arc extinguishing chambers, help minimize the risk of damage to the switch and surrounding equipment, as well as reduce the potential for electrical accidents.
4.Fault Detection: Some high voltage isolator switches are equipped with fault detection mechanisms that can sense abnormal conditions, such as excessive current or voltage, and trigger an automatic switch opening. This capability enhances the overall protection of the circuit by rapidly isolating the faulty section and preventing further damage.
5.Modularity and Scalability: High voltage isolator switches are often designed to be modular, allowing for easy installation, replacement, or expansion in the electrical system. This modularity enables flexibility and scalability, making it convenient to adapt the system to changing operational requirements.
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 materials.
1.Consider implementing remote monitoring and control systems for high voltage isolator switches. These systems allow for real-time monitoring of switch status, load conditions, and fault detection, enhancing operational efficiency and reducing the need for manual intervention.
2.Provide clear and visible warning signs and labels near the switch to alert personnel to the high voltage and potential hazards associated with the equipment. This helps promote awareness and encourages adherence to safety protocols.
3.Establish a regular maintenance schedule for the switch and adhere to it diligently. Regular maintenance helps identify and address potential issues early on, ensuring the switch remains in optimal condition and reducing the likelihood of unexpected failures.
4.Maintain a reliable backup power source or contingency plan in case of power outages or emergencies. This ensures that the switch can still be operated or isolated when the primary power supply is unavailable, minimizing disruptions and maintaining safety.
5.Conduct thorough risk assessments before installing or commissioning high voltage isolator switches. Assessments should consider factors such as environmental conditions, potential electrical faults, and the proximity of personnel or sensitive equipment to ensure adequate safety measures are in place.
6.Stay updated with industry standards, regulations, and best practices related to high voltage isolator switches. Compliance with relevant standards, such as those set by electrical safety authorities, helps ensure that the switch meets minimum safety requirements and operates within acceptable limits.
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.
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 | ||||||||||||
