12kV 630A hv High Voltage Disconnect Switch GB 1985-2014 High Efficiency

AC Power High Voltage Disconnect Switch Using With Low Risk Better Efficiency With Outdoor Vacuum Circuit Breaker

Product Description:

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 wor k 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.

Collocation:

The relation between the outdoor vacuum circuit breaker and the outdoor high-voltage disconnect isolator lies in their complementary roles in the electrical system:

Circuit Interruption: The vacuum circuit breaker is responsible for interrupting the electrical circuit during normal operation or in the event of a fault. It acts as the primary means of breaking the current flow. In contrast, the disconnect isolator is used for isolating the circuit from the power source during maintenance or repair activities. It provides an additional layer of safety by physically opening the circuit.

Coordination: In high-voltage power systems, the vacuum circuit breaker and the disconnect isolator are often coordinated to work together. The circuit breaker is responsible for detecting faults and tripping to interrupt the current flow, while the disconnect isolator is used to physically isolate the circuit and provide a visible indication of the disconnection.

Safety and Maintenance: The disconnect isolator plays a crucial role in ensuring the safety of maintenance personnel. Before any maintenance work can be performed on the electrical equipment, the disconnect isolator is operated to open the circuit and provide a visible air gap. This ensures that the equipment is de-energized and safe to work on. The vacuum circuit breaker, on the other hand, protects the system during normal operation and in the event of faults.

Structure:

The product being described is composed of a base (plate), post insulator, conductive part, and interlock device. The knife is installed on the dynamic contact knife head through bolts and is separately connected with the static contact head. Each side is maintained in a good contact state by the pressure of the compression spring. The knife is a slot-shaped type, which increases the heat dissipation surface and reduces the temperature rise. This contributes to the mechanical strength of the knife and makes it dynamically thermally stable against short circuits.
The interlocking parts installed at the non-rotating end of the contact knife and the static locking hook on the static contact form the opening locking device. When the brake is closed, the device is self-locking, so the brake knife will not fall off due to its own weight or the action of electric power, which could cause the brake to open without cause.
This product is commonly used in power transmission and distribution systems and plays a crucial role in ensuring the proper functioning of the electrical grid. Proper safety procedures should be followed when working with these switches, and only qualified and trained personnel should be allowed to operate and maintain them.

Advantage:

1.Simple structure: The isolation switch is designed with a straightforward structure, making it easy to understand and operate.

Low maintenance: Due to its design and construction, the isolation switch requires minimal maintenance, reducing the need for frequent inspections and repairs.

2.High breaking and closing linearity: The isolation switch has excellent breaking and closing linearity, ensuring smooth and reliable operation during switching operations.

3.High reliability: The switch is built to provide dependable performance, minimizing the risk of malfunctions or failures during operation.

4.Comparable to international standards: The GW9-12(W) series isolation switch meets or exceeds the level of similar products both domestically and internationally, ensuring its compatibility and competitiveness in the market.

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.

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 applies to severe filthy conduction area, however, it shouldn't be any explosive matters and matters causing fire

Technical Parameters: