Max 1250A Outdoor High Voltage Overhead Disconnect Switch Used With Electrical Vacuum Circuit Breakers Creamic Hookstick
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.
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.
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.
Conditions:
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
Features:
1.High voltage and current handling capacity: high voltage disconnect switches are designed to handle high voltages and currents commonly found in high voltage power systems, and are typically rated for 69 kV and above.
2.Stationary and movable contacts: high voltage disconnect switches have a set of stationary and movable contacts that are separated by an air gap. When the switch is closed, 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.
3.Manual or motorized operation: high voltage disconnect switches can be manually operated or motorized, depending on the specific application and requirements. Motorized switches allow for remote operation, which can improve safety and convenience.
4.Outdoor construction: high voltage disconnect switches are designed for outdoor use and are typically constructed of durable materials such as steel or aluminum. They are built to withstand harsh environmental conditions, such as extreme temperatures, wind, rain, and dust.
5.Visual indicators: high voltage disconnect switches often have visual indicators to show the status of the switch, such as open or closed. This allows operators to quickly and easily determine the status of the switch.
6.Safety features: high voltage disconnect switches are designed with safety features to protect workers and the public from electrical hazards, such as accidental contact with live parts of the system. These features may include safety interlocks, grounding provisions, and warning labels.
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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