High Voltage indoor disconnector switch--GN19

Product description

The GN19 high - voltage indoor disconnector switch is a switching device used in high - voltage electrical equipment. It is mainly used to reliably isolate electrical equipment from the live part during power - off maintenance and other situations to ensure the safety of maintenance personnel and the normal maintenance of equipment. It is usually installed in indoor high - voltage switchgear cabinets or substations and is suitable for AC power systems with a rated voltage of 3 - 35 kV and a frequency of 50 Hz.

Product parameters

• Rated Voltage: It is available in various specifications such as 3 kV, 6 kV, 10 kV, and 35 kV.
• Rated Current: Generally, it includes different levels such as 400 A, 630 A, 1000 A, 1250 A, 1600 A, and 2000 A.
• Rated Short - Time Withstand Current: Depending on different models and specifications, it usually ranges from 12.5 kA to 50 kA.
• Rated Peak Withstand Current: Generally, it is about 2.5 times the rated short - time withstand current, such as 31.5 kA - 125 kA.
• 1 - min Power - Frequency Withstand Voltage: For the phase - to - ground and inter - phase, it is generally 42 kV - 95 kV, and for the break - to - break, it is generally 48 kV - 110 kV.
• Lightning Impulse Withstand Voltage: For the phase - to - ground and inter - phase, it is generally 75 kV - 185 kV, and for the break - to - break, it is generally 85 kV - 215 kV.

Product features

• Simple Structure: It adopts a single - column or double - column structure, which is composed of a base, post insulators, and conductive parts. It has a compact structure and is easy to install.
• Flexible Operation: It can be equipped with manual, electric, or pneumatic operating mechanisms. The operating torque is small, and the action is flexible and reliable, which can meet the operating requirements of different application scenarios.
• Good Insulation Performance: It uses high - performance post insulators, which have good insulation performance and can withstand high voltage levels, ensuring the insulation reliability of the equipment during operation.
• Excellent Conductive Performance: The conductive parts are made of high - quality copper or copper alloys and are silver - plated on the surface. The contact resistance is small, and the conductive performance is good, which can effectively reduce the heating problem of the equipment during operation.
• High Dynamic and Thermal Stability: It can withstand the impact of large short - circuit currents. During short - circuit faults, it can maintain good mechanical and electrical properties to ensure the safe operation of the equipment.
• Easy Maintenance: The structure design is convenient for inspection and maintenance. The parts have strong versatility and are easy to replace, which can effectively reduce the maintenance time and cost of the equipment.