Richard Hughes (deceased)
Pump & Motor Works, Inc.
This series of four articles covers many schemes of motor protection and control.
Topics covered include:
- Time delay fuses
- Fuse selection
- Over-current protection
- Avoiding fuse overloads
- Circuit breakers
- Inputs to electronic protection relays
- Feeding, protecting a motor starter
- Common features
- Motor starters
- How motor starters operate
- Light, medium or heavy duty
- Momentary start button
- Wye series start, parralel run
- Variety of controls
- IEEE and ANSI power system device numbers
- Dashpot type overload relay
- Thermal overload relay
- Current transformer
- Compact relays
- Restoring balanced voltage
- Transient voltages
- Surge capacitor, surge arrestor
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