Siemens type GM-SG 5 kV, 7.2 kV and 15 kV metal-clad power switchgear assemblies with horizontal drawout type GMSG vacuum circuit breakers take advantage of the latest developments in vacuum interrupter technology. Up to two circuit breakers can be stacked in a single vertical section, allowing significant space savings.
The equipment meets or exceeds the latest standards of ANSI, IEEE and NEMA.
Type GM-SG switchgear is designed for use in industrial plants, commercial buildings, electric utility systems, cogeneration installations and other electrical systems. It is commonly used for protection and switching of transformers, motors, generators, capacitors, buses, distribution feeder lines and, in general, for protection of any medium-voltage power circuit.
Siemens experience gained in over 80 years of supplying metal-clad switchgear in the U.S. has been captured in the type GM-SG design. The objective has been to incorporate features designed to provide safety, while simplifying operation, maintenance and minimizing installation cost.
The switchgear structure and the drawout vacuum circuit breaker are an integrated design, with dielectric, thermal and interruption integrity built directly into the basic design, not as an afterthought.
Siemens Integrated Electric-Racking System (SIERS) is optionally available with type GM-SG switchgear.