EHV Modular GIS (Up to 300kV)

Property Specification

Type: Extra-High-Voltage Modular Gas-Insulated Switchgear / GIS Architecture (up to 300 kV)

Features: Designed as an adaptable and highly dependable modular GIS system for transmission networks up to 300 kV, this equipment supports continuous rated currents up to 4000 A and short-circuit fault currents up to 63 kA. Constructed using a streamlined set of standardized building blocks, its versatile modular design grants exceptional configuration flexibility. This enables optimization of physical substation layouts while tailoring technical capabilities to specific grid architecture demands.

Applications: Extra-high-voltage bulk power transmission grids, grid connection for utility-scale renewable power plants, and heavy industrial plant power supply facilities.

Description

Key Technical Performance Specifications

Technical Parameter / Specification 300 kV
Rated Maximum Voltage 300 kV
Rated System Grid Frequency 50 / 60 Hz
Power-Frequency Withstand Voltage (1 min) 460 kV
Lightning Impulse Withstand Voltage (1.2/50 μs) 1050 kV
Switching Impulse Withstand Voltage (250/2500 μs) 850 kV
Nominal Continuous Current (Busbar / Feeder) 4000 A
Short-Circuit Interrupting Current Rating 63 kA
Short-Time Thermal Withstand Current (≤ 3 s) 63 kA
Peak Dynamic Withstand Current 170 kA
Physical Bay Module Width 1680 mm
Operating Ambient Temperature Range -30°C to +40°C
Deployment / Environment Indoor / Outdoor