Plastic, rubber, glass, and mica are examples materials that
are good insulators.18
Input/Output (I/O) System The part control system that interfaces the real world. Voltage the
gate element used control the current flowing between
the collector and emitter. potential
transformer (PT) used for voltage measurements and a
current transformer (CT) used for current measurements.
The I/O system accepts signals from switches and sensors, and
provides signals actuating and display devices.
Insulated Gate Bipolar type transistor often used switching device the
Transistor (IGBT) inverter section variable frequency drive.
5 VDC, VDC, 125 VDC
24 VAC, 120 VAC, 240 VAC
Discrete I/O Examples
Analog I/O Examples
0 VDC
-10 VDC
4 mA
Processor
I/O
System
I/O
Devices
Low Voltage DC
InstrumentTransformer type transformer used sense the voltage current
of associated conductors and provide proportional electrical
energy measurement devices circuits. ANSI represents the S.
Gate
Collector
Emitter
Insulator material with high resistance the flow electrons.
Insulated Case Circuit type circuit breaker that conforms NEMA AB-1 and
Breaker 489 standards for molded case circuit breakers and often
used main breaker switchboards, motor control centers,
or other applications requiring molded case circuit breaker
with high continuous current rating.
Commission (IEC) IEC writes international standards for electrical and electronic
technologies and practices.
International organization based Geneva, Switzerland with over 50
Electrotechnical national committees full members.
