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ZHW58A Hybrid Gas-Insulated Switchgear
ZHW58A hybrid gas-insulated switchgear integrates components such as circuit breakers, DS, ES, CT, PT and FES. It features a small footprint, strong environmental adaptability, high reliability, and maintenance-free operation. The rated voltage covers 40.5-252kV, making it suitable for high-voltage power transmission and distribution applications such as substations.
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Space-Saving Structural Design
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Optimized Electrical Performance
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Proven Mechanical Durability
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Highly Modular Design
Product Highlights
Space-Saving Structural Design
Three-phase split-tank design with an integrated base frame. Enables integral three-phase transportation by bay, ensuring convenient and reliable on-site installation.
Optimized Electrical Performance
Superior insulation properties. Integral partial discharge <3pC. Horizontal breaker layout structure enables switching capability of 50kA.
Proven Mechanical Durability
Employs a new integrated die-cast aluminum base spring operating mechanism. Compact structural design with stable output performance ensures high reliability and maintenance-free operation. Mechanical life meets M2 class requirements.
Highly Modular Design
Modular design approach. Standardized connection flange dimensions enable flexible configuration according to requirements. Strong module interchangeability facilitates functional expansion to optimize substation layout.
Technical Specification
Rated Voltage
31.5kV, 40.5kV, 72.5kV, 145kV,170kV,252kV
Rated Frequency
50/60Hz
First-Pole-to-Clear Factor
1.3/1.5
Rated Current
Up to 4000A
Rated Short-Circuit Breaking Current
Up to 50kA
Rated Short-Circuit Making Current (Peak)
Up to 135kA
Rated Short-Time Withstand Current
Up to 50kA
Rated Peak Withstand Current
Up to 135kA
Rated Short-Time Withstand Current Duration
4s
Rated Operating Sequence
O-0.3s-CO-3min-CO
Mechanical Endurance
10000 times
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