Page 222 - 인천국제공항 4단계 건설사업 건설지 [화보집 영문]

Ensuring an uninterrupted power supply: near major loads to reduce the cost of main power line installations. It did not
electrical work for Terminal 2 expansion include facilities that use water for safety in the upper part of the electric room and
The most important goal of electrical work for Terminal 2’s expansion was installed electric shock prevention pads on main facilities.
establishing an uninterrupted power supply. The primary goal of the electrical As airports need power 24/7, IIAC classified emergency power per level and built
equipment work for the Terminal 2 expansion project was to ensure uninterrupted related facilities. It also secured an Uninterrupted Power Supply System (UPS) to

power supply. To achieve this, regular power will be supplied from the newly guarantee power supply in case of failure due to voltage or frequency change or
constructed Main Substation C, while emergency and self-generated power will power supply interruptions. Even when the normal time power has a failure, the
be routed through Power Building C to Substation A, implementing a dual supply backup power will run for 30 minutes. The Emergency Power Supply (EPS) was
system. positioned and installed to cover areas within a 25-meter radius of high-density

The power grid is composed of a 3-stage backup to prepare against blackouts. load zones, taking into account future maintenance, and potential power outages
Various factors including cost, safety, and efficiency were considered. IIAC saved caused by leaks. Fuel-cell facilities were installed at the western part of Terminal 2
construction costs for main power lines by strategically locating electrical rooms to prove the potential of new and renewable energy.

220 The 30-year History of Incheon Airport Construction 221