Home
IEC
GB
252/550kV Gas-Insulated Lines
GXL 28-252/550 GIL is a high voltage level, large transmission capacity, safe and reliable transmission line. Compared with cables and overhead lines, it is a safer, more efficient, green, and intelligent transmission method.
-
Engineered for Peak Performance
-
High Space Utilization Rate
-
Lower Environmental Footprint
Product Highlights
Engineered for Peak Performance
The current carrying capacity is extremely large, and the conductor is an aluminum alloy large cross-section tubular structure, with a single circuit current carrying capacity of up to 5000A; low reactance, low voltage drop, coaxial arrangement of conductor and enclosure, low circuit impedance, and low voltage loss during long-distance transmission; No capacity increase, no cable thermal aging breakdown problem
High Space Utilization Rate
Less land occupation on the ground, can be accessed through tunnels, pipe galleries, bridges, and underground; The metal casing is fully grounded, and there is no high pressure hazard on the outside of the pipeline. There is no requirement for a safety isolation corridor; Three dimensional compact tubular structure, capable of multiple layers arranged side by side and densely arranged inside tunnels
Lower Environmental Footprint
Coaxial shielding structure, no electromagnetic interference equipment risk; There is no noise, interference with communication, or radar along the enclosed cavity; Strong adaptability to climate and terrain; There is no combustible insulation material inside, and the fire pressure of tunnels and underground pipe galleries is significantly reduced.
Technical Specification
Rated Voltage
252 kV/550 kV
Rated Current
Up to 4000 A/Up to 5000 A
Rated Short-Duration Power-Frequency Withstand Voltage (1min, RMS)
460 kV/740 kV
Rated Lightning Impulse Withstand Voltage (Peak)
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
