Glossary - Siemens SIMATIC ET 200SP System Manual

Glossary

AWG (American Wire Gauge)
A standard measure for conductors used in the USA, which is assigned to a specific cross-
sectional area of a conductor or wire. Each AWG number represents a jump of 26% in the
cross-sectional area. The thicker the wire, the smaller the AWG number.
CLASS (time)
Trip class (CLASS)
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Connection system
The motor starter is connected using screw terminals, push-in connections and hybrid
connection technology.
Derating
Derating allows devices to be used even in harsh operating conditions by selectively
restricting the output capacity. In the case of motor starters, this usually refers to operation at
high ambient temperatures.
Explosion protection
Prerequisite for using electrical equipment in hazardous areas conforming to DIN EN 50014
(VDE 0170/0171). For explosion protection, you must ensure that equipment which may
generate explosive arcs (plasma) during operation is enclosed in a flameproof casing. This
means that, although the potentially explosive mixture could penetrate the enclosure, if an
explosion were to occur inside it then no explosive flame could escape.
Infeed system
The 3-phase busbar enables several SIMATIC ET 200SP motor starters to be supplied using
a single infeed terminal.
Motor starter
System Manual, 04/2016, A5E35582704002A/RS-AA/001
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