Page 114 - CITS - Electrician - Trade Practical
P. 114
ELECTRICIAN - CITS
6 Sparking in terminals Loose contact on terminals/ Tighten the terminals & cable
bushes Reduce the load
Over loading
7 Burning smell/smoke Winding insulation failure Rewinding to be done
Short circuit in windings Rewinding to be done
High supply voltage Inform to EB authorities to check
Excessive load on transformer Reduce load
8 Oil leakage Oil seal/gasket damage Replace the oil seal/gasket
Loosen bolts of transformer Tighten the bolts of oil tank
tank Drain the oil and weld/braze the
Mechanical damage to tank damaged part of oil tank
97
CITS : Power - Electrician & Wireman - Exercise 47
