Motor starting

1. Motor starting

Level 3 Diploma in Electrical Installations (Buildings and Structures)
PowerPoint
presentation
Unit 302: Principles of electrical science
Motor starting
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2.

Level 3 Diploma in Electrical Installations (Buildings and Structures)
© 2018 City and Guilds of London Institute. All rights reserved.
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3.

Level 3 Diploma in Electrical Installations (Buildings and Structures)
Direct-on-line (DOL) starting
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4.

Level 3 Diploma in Electrical Installations (Buildings and Structures)
Star-delta starting
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5.

Level 3 Diploma in Electrical Installations (Buildings and Structures)
Rotor resistance starting
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6.

Level 3 Diploma in Electrical Installations (Buildings and Structures)
Soft start
Some of the benefits:
• three conductors to the motor
• variable starting torque
• no current peak
• no torque peaks
• one simple switching device
• optional: guided soft stop, protective functions, etc
• zero maintenance
© 2018 City and Guilds of London Institute. All rights reserved.
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7.

Level 3 Diploma in Electrical Installations (Buildings and Structures)
Variable frequency drives (VFD)
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8.

Level 3 Diploma in Electrical Installations (Buildings and Structures)
Programmable Logic Controllers (PLC)
© 2018 City and Guilds of London Institute. All rights reserved.
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9.

Level 3 Diploma in Electrical Installations (Buildings and Structures)
Any questions?
© 2018 City and Guilds of London Institute. All rights reserved.
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