Standard Elementary Diagram Symbols
NEMA and IEC Markings and Schematic Diagrams.
Control and Power Connection Table 4
Terminology
Examples of Control Circuits
2-Wire Control 6
3-Wire Control 6-9
Shunting Thermal Units During Starting Period
Overcurrent Protection for 3-Wire Control Circuits
AC Manual Starters and Manual Motor
Starting Switches .
Class 2510 12
Class 2511 and 2512 13
2-Speed AC Manual Starters and
IEC Motor Protectors
Class 2512 and 2520 14
GV1/GV3 14
Drum Switches.
Class 2601 15
DC Starters, Constant and Adjustable Speed.............. 16
Class 7135 and 7136 16
Reversing DC Starters, Constant and
Adjustable Speed
Class 7145 and 7146 17
Mechanically Latched Contactors
Class 8196 18
Medium Voltage Motor Controllers
Class 8198 18-25
Solid State Protective Relays
Class 8430 26-27
General Purpose Relays
Class 8501 28
NEMA Control Relays.
Class 8501 and 9999 29
General Purpose Relays
