Interview shortcuts for Assistant engineer
400 KV – Madakkathara
400 KV – Areekode
400 KV – Pothencode
110 KV – Udupi
60 Kv -Theni
REF is the restricted Fault Relay ,REF relay will find the neutral current of transformer with the help of CT.
Power cut is scheduled and Load shedding is un scheduled
25kv and 2 phase AC KSEB will providing 110 KV line supply to railways ,that is two phase . The traction substation convert 110 KV to 25 KV ac .The transformer rating 110KV/25KV and 25 KV is feedad to the line .
High Line loss
Low line efficiency
More capital investment required as size of the conductor increases
Large KVA rating of the equipment
Large copper loss
Poor voltage regulation
Capacitor charging current infinite if we connect directly connect to the line. If its draws large amount of current to the charger ,so the sudden dip will happen .To avoid the problem we are charging through an inductor .The inductor charging current is zero.
It may be a company or any private sector which generates power for there use and excess will be given to KSEB.
Example: MP steel Ltd co-generation in Palakkad (10 MV)
If we insert inductive element in to a system the leading pf will decrease they are called shunt inductor .These are used to reduce the Ferranti effect in the long transmission line.
Good Gel : Blue color
Moister content : Pink color
Battery life will reduce when its overcharge . We are using floating mode charging with very low current is used in substation.
Eddy current .