Specifications

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Switchgear The term switchgear is used to describe a compartmentalized
system of coordinated devices used for power distribution
control and circuit protection. Essentially, switchgear performs
the same function as the switchboards previously described, but
different standards dictate the design of switchgear. In addition,
because MV switchgear must handle higher levels of electrical
energy and be capable of interrupting higher fault currents, it is
larger and more heavily constructed.
A large industrial facility receives electrical power at a substation
from the utility company at high transmission voltage levels.
The voltage is stepped down to a medium voltage level at
the substation for distribution throughout the facility. Large
industrial facilities can be spread out over several acres and may
incorporate many large buildings. Multiple MV switchgear units,
often called MV metal-clad switchgear, could be used if the
power demand is large enough.
GM-SG Air Insulated Siemens manufactures multiple types of MV switchgear to
Metal-clad Switchgear meet varied customer requirements. This includes MV air
insulated equipment and gas insulated equipment with
voltage ratings up to 38 kV. One example of a widely used MV
switchgear product is Siemens GM-SG medium voltage (5 to
15 kV) air insulated switchgear.
GM-SG MV switchgear is available in arc resistant and non-arc-
resistant versions. It features Siemens globally proven 3AH3
circuit breaker operator which provides higher interrupting
ratings, faster interrupting times, and reduced maintenance
requirements.
Danger