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Chapter 3: Motors
53
InducƟon Motors
The Run Capacitor
Parts of a Motor
Capacitor RaƟngs
Stator Poles
Single‐Phase Motor StarƟng Relays
Stators
Current Relay
Rotors
PotenƟal Relay
Motor Speed
Solid State and PTC
Shaded Pole
CalculaƟng Motor Horsepower
Split‐Phase Motors
Service Factor
DirecƟon of RotaƟon
Locked Rotor Amps
DisconnecƟng the Start Winding
Full Load Amps
CS or CSIR Motors
Overload Protectors
PSC Motors
Three‐Phase Motors
CSR Motors
Changing the RotaƟon of a Three‐Phase Motor
IdenƟfying HermeƟc Motor Terminals
Checking Resistance of Windings
Electronically Communicated Motors (ECM)
Dual‐Voltage Three‐Phase Motors
Shaded Pole and PSC Motor Speeds
The Motor Name Plate
Capacitors
Name Plate Data DefiniƟons
Start Capacitors
Variable Frequency Drives
Variable Speed Drives
Chapter 4: Understanding Wiring Diagrams
79
Pictorial and SchemaƟc Diagrams
Ladder Diagrams
Pictorials Versus SchemaƟcs
Reading a Wiring SchemaƟc
Combining Pictorial & SchemaƟc Drawings
SchemaƟc Diagram Symbols
Line‐Side Versus Load‐Side
Chapter 5: Automated Control Systems
97
Why Have Automated Controls
Basic OperaƟng Structure
Building AutomaƟon
Controller Types
System Protocols
Network ConnecƟons
Chapter 6: TroubleshooƟng
105
Terms
Ammeters
Voltmeters
TroubleshooƟng Switches
Lineal Searching
SystemaƟc TroubleshooƟng
Split Searching
Voltmeter or Ohmmeter
TroubleshooƟng Using a Voltmeter
TesƟng Capacitors
Ohmmeters
Tips and SuggesƟons
Glossary
127