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145kV SF₆-Free Gas-Insulated Switchgear
ZF28A-145(Z)SF₆-Free GIS is a complete set of 110kV high-voltage three-phase AC switchgear. The insulation gas used is non SF₆ gas, which meets the needs of carbon neutrality development.
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Lower Environmental Footprint
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Engineered for Long-Term Reliability
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Engineered for Peak Performance
Product Highlights
Lower Environmental Footprint
Using environmentally friendly gases as insulation media, free of SF6 and greenhouse gases, low GWP value, in line with carbon neutrality development goals.
Engineered for Long-Term Reliability
Its electrical, insulation and operational performance are no less than those of conventional SF₆ GIS. It can operate reliably under a wide range of adverse conditions, whilst balancing environmental sustainability with the reliability of power supply.
Engineered for Peak Performance
The circuit breaker is fitted with a pure spring operating mechanism, with an electrical life of ≥30 operations, and offers excellent breaking performance.
Technical Specification
Rated Voltage
145 kV
Rated Current
up to 3150 A
Rated Short-Duration Power-Frequency Withstand Voltage(1 min,Effective Value) - Phase to Phase,Phase to Ground
275 kV
Rated Short-Duration Power-Frequency Withstand Voltage(1 min,Effective Value) - Across Isolating Distance
275+92 kV
Rated Lightning Impulse Withstand Voltage(Peak Value) - Phase to Phase,Phase to Ground
650 kV
Rated Lightning Impulse Withstand Voltage(Peak Value) - Across Isolating Distance
650+118 kV
Rated Short-Time Withstand Current
up to 40 kA
Rated Duration of Short-Circuit
4 s
Rated Peak Withstand Current
up to 104 kA
