16. TROUBLE SOOTING OF ELECTRICAL POWER
SYSTEM
SystemProblem
Solutions
Common Causes Possible Effects Solutions
Voltage imbalances
among phases
Improper
transformer tap
Motor vibration,
premature motor
failure
Balance load among
phases
Voltage deviation Improper
transformer setting
Over voltage , temp
increase
Correct transformer
setting
Poor connection Loose connection,
clamp
Heat produce Use camera infra
red to trace
Undersized
conductors
Review conductor
size
Voltage drop,
energy wastage
Reduce load
Insulation leakage Abrasion, moisture Leak to ground Replace insulators
Low power factor More inductive load Reduces current
capacity
Add capacitors
Harmonics (non-
sinusoidal)
VFD, UPS,
BALLAST ETC
Over heating of
neutral conductors
Take care of
selection
17. ACT FAST AND INITIATE
FIRST
बड़ा सोचो
तेजी से सोचो व
सबसे पहले सोचो
िवचारो पर िकसी का
एकािधकार नही होता.
---- धीरभाई अमबानी