SF6-Free Modular GIS (145kV)

Property Specification

Type: Eco-Efficient SF6-Free High-Voltage Gas-Insulated Switchgear / Modular GIS Platform (145 kV)

Features: Built as an environmentally sustainable, modular GIS solution for 145 kV networks, this unit combines high operational reliability with minimized life-cycle expenditures and a reduced carbon footprint. It employs a eco-efficient insulating gas mixture composed of carbon dioxide (CO2), oxygen (O2), and trace fluoronitrile (C4-FN),

Applications: High-voltage power transmission grids, integration of renewable energy generation facilities, and offshore or onshore wind power grid connection substations.

Description

Key Technical Performance Specifications

Technical Parameter / Specification 145 kV
Rated Maximum Voltage 145 kV
Rated System Grid Frequency 50 / 60 Hz
Power-Frequency Withstand Voltage: Phase-to-Ground 275 kV
Power-Frequency Withstand Voltage: Across Open Gap 315 kV
Lightning Impulse Withstand Voltage (BIL): Phase-to-Ground 650 kV
Lightning Impulse Withstand Voltage (BIL): Across Open Gap 750 kV
Nominal Continuous Current Rating 3150 A
Short-Time Thermal Withstand Current 40 kA
Peak Dynamic Withstand Current 120 kA
Standard Breaker Duty Cycle / Operating Sequence O – CO – CO