More than 60 degree
Less than 20 degree
About 45 degree
Between 20 and 45 degree
Blocks the surge voltage appearing in a line
Absorbs the surge voltage appearing in a line
Offers a low resistance path to the surge
Returns surge back to the source
50
100
150
300
Squirrel cage induction motor
Wound rotor induction motor
AC Commutator motor
Synchronous motor
Double earthed
Double insulated
Controlled by ELCB
Controlled by MCB