HMGS Cubicle type gas insulated switchgear is an integrated
assembly of vacuum circuit breaker, 3-position switch, disconnector,
bus connecting system, and control devices coordinated
electrically and mechanically for medium voltage power system.

• Long-Time Life Cycles (20 years)
• Applicable Single & Double Bus System
• No need for site gas charging
• Compact size comparing with Air Insulated Type
• Easy Installation (Plug-in Bus Connecting System)
• High reliability for operation
• Pursuing human safety

• Type tested by KERI (Korea Electrotechnology Research Institute)
• Internal ARC Test level BFLR-40 kA/1s, Circuit Breaker - E2, S2, SLF, C2, M2 meeting IEC standard.
• Circuit breaker, Disconnecting Switch, Main Bus are sealed within the SUS304L enclosure.
• The safety proven model using upper & rear gas duct.
• The applied SF₆ gas pressure is applied which is similar with atmosphere pressure.
• Mechanical & Electrical Interlock system for Circuit Breaker and Disconnector
• Operation time & status monitoring using Digital Controller