Saturday 29 August 2009

ELECTRIC MOTOR STARTERS

Type of Starters

a) Direct-On-Line (DOL)
b) Star-Delta
c) Auto-Transformer (AT)
d) Rotor Resistance (RR)
e) Primary Resistance Not Cc nly U99

Selection of Starters

a) 1hp.- 5.5 hp use DOL starter -
b) 7.5 30hp use SD starter
c) 40hp and above use AT starter
d) Slip-Ring Induction motor use RR starter

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