Specifications

101
Secondary Unit Substation A coordinated design consisting of one or more transformers
mechanically and electrically linked to switchgear or
switchboard assemblies with an outgoing voltage rated below
1000 volts.
Primary Switch
Transformer
Switchboard or
Switchgear Sections
Selective Coordination Applying circuit breakers in a manner that minimizes the extent
of an outage in the event of a fault. Circuit breakers are typically
installed in a branching arrangement. In the event of a fault, the
breaker electrically closest to the fault should trip first. This can
be accomplished by properly sizing and adjusting all breakers.
Selector Switch A manual switch with multiple contact positions.
16 mm 3SB2
Selector Switch
22 mm SIGNUM
3SB3 Selector Switch
30 mm Class 52
Selector Switch
Semiconductor A type of material, such as silicon, with more resistance than a
conductor, but less than that of an insulator. Semiconductors
can be manufactured to produce devices such as diodes,
transistors, thyristors, etc.