GuangDong Heng AnShun Electrical Power Equipment Service Co., Ltd.
Strive to establish leadership in China's electric power equipment industry.
Add to Cart
GW9-10 High Voltage Isolator Switch 630A Overhead Line Disconnect Switch For Protecting Used In Power Systems
Product Description:
High Voltage Isolator Switch is a type of electrical switch used in power systems to isolate a circuit from the rest of the system for maintenance or safety purposes. The term "vertical" refers to the orientation of the isolator, which is mounted vertically on a support structure.
High Voltage Isolator Switches are commonly used in high voltage transmission and distribution systems to isolate sections of the network for maintenance or repair work. They are designed to handle high voltages and currents and are often installed in outdoor locations.
High Voltage Isolator Switches typically consist of a set of stationary and movable contacts that are separated by an air gap. When the isolator switch is in the closed position, the contacts are in contact with each other, allowing current to flow through the circuit. When the isolator 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 Isolator 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.
Structure:
This product is composed of base (plate), post insulator, conductive part and interlock device. One end of the knife is installed on the dynamic contact knife head through bolts, and the other end of the knife is separately connected with the static contact head, and each side is maintained in a good contact state by the pressure of the compression spring. Each knife is slot-shaped type, which not only increases the heat dissipation surface of the knife, but also conducive to reducing the temperature rise, and improve the mechanical strength of the knife, making the dynamic thermal stability against short circuit. The interlocking parts installed at the non-rotating end of the contact knife and the static locking hook on the static contact constitute the opening locking device, which is self-locking when the brake is closed, so that the brake knife will not fall off by itself due to its own weight or the action of electric power, resulting in the opening of the brake without cause.
Feature:
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.
Safety Tips:
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.
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 | ||||||||||||
