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

Technical Specifications

Features

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.
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
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
Rated frequency

up to 4000 A/up to 5000 A
Rated short-duration power-frequency withstand voltage（1 min，effective value）

460 kV/740 kV
Rated lightning impulse withstand voltage（peak value）

1050 kV/1675 kV
Rated short-time withstand current

up to 63 kA
Rated duration of short-circuit

3 s
Rated peak withstand current

up to 171 kA

Tel : +021-61610502

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