252/550kV Gas-insulated Transmission Line
GXL 28-252/550 Gas-insulated Transmission Line is a transmission line with high voltage level, large transmission capacity and high safety and reliability. It features a safer, more efficient, green and intelligent transmission mode than cable and overhead line.
Excellent performance
High safety
Good usability
IEC
Features
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01
Excellent performance
It boasts a particularly high transmission capacity, with a maximum current of up to 8000A, and exhibits minimal thermal and electrical energy losses, resulting in good energy-saving effect.
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02
High safety
It has good protection performance, and is characterized by less maintenance work and an extremely low failure rate. It shows strong resistance against disasters such as ice, snow, and earthquakes, and offers excellent fire protection performance, ensuring high safety and reliability
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03
Good usability
It is easy to maintain and inspect, and has a long service life. It covers a small space, supports a wide voltage range, and can be installed in various ways.
Technical Specifications
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Rated voltage
252 kV/550 kV
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Rated frequency
up to 4000 A/up to 5000 A
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Rated short-duration power-frequency withstand voltage（1 min，effective value）
460 kV/740 kV
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Rated lightning impulse withstand voltage（peak value）
1050 kV/1675 kV
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Rated short-time withstand current
up to 63 kA
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Rated duration of short-circuit
3 s
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Rated peak withstand current
up to 171 kA
Tel : +021-61610502
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