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40.5kV Gas-Insulated Switchgear
ZF28A-40.5 Gas-Insulated switchgear adopts the mature technology of existing 110kV and above GIS. It features strong capacity for switching capacitive and inductive currents, low partial discharge, large insulation margin, low leakage rate, strong weather resistance, and long service life.
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Space-Saving Structural Design
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No Scheduled Maintenance Required
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Applicable for Upgrading Cabinets in Old Substations
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Engineered for the Harshest Environments
Product Highlights
Space-Saving Structural Design
It covers small areas, saving space and offering flexible layout.
No Scheduled Maintenance Required
The annual leakage rate is less than 0.1%. The fully sealed cast aluminum alloy shell is corrosion-resistant, free of eddy currents, and safe and reliable.
Applicable for Upgrading Cabinets in Old Substations
Busbar and foundation remain unchanged, and the original primary cable is retained, so operators can keep familiar operating habits. The product is safer and more reliable, weighs less than the original cabinet, and can also be used to renovate second-floor cabinets.
Engineered for the Harshest Environments
Suitable for harsh environments (such as humid and prone-to-condensation areas), high altitudes, extremely cold regions, and areas with frequent earthquakes.
Technical Specification
Rated Voltage
40.5kV
Rated Frequency
50Hz
First-Pole-to-Clear Factor
1.3/1.5
Rated Current
Up to 4000A
Rated Short-Circuit Breaking Current
Up to 40A
Rated Short-Circuit Making Current (Peak)
Up to 104kA
Rated Short-Time Withstand Current
Up to 40kA
Rated Peak Withstand Current
Up to 104kA
Rated Short-Time Withstand Current Duration
4s
Rated Operating Sequence
O-0.3s-CO-3min-CO
Mechanical Endurance
10000 times
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