Causes and Remedies

Causes Remedies
a) Timer setting on lowest step
b) Relay setting on lower reading than rated current.
c) Terminal voltage is low.
d) Backup fuse blowing.
e) Starting current is high due to heavy inertia.
f) Misalignment.
a) Set timer on proper setting.
b) Set overload relay at 110% of rated full load current punched on Nameplate.
c) Ensure rated voltage OR increase realy setting slightly.
d) Correct rating of back-up fuse to be used.
e) Start stop the relay continuously till motor, pick up full speed. If problem persist, Contact LHP and inform Gd2 of load.
f) Ensure proper alignment.