Write short note on working of Isolator.
1)Isolators (or disconnector switches) are not equipped with are quenching devices and, therefore, not used to open circuits carrying current...
Write short note on One-and-a-half breaker arrangement
One-and-a-half breaker arrangement needs use of three circuit breakers for two circuits. Any circuit breaker can be switched-off for the...
What is Sectionalization of bus and Ring Bus
Sectionalizing the buses offers added advantage. One section can be completely shut-down for maintenance and repairs, while the other continue...
What is Single & duplicate bus-bar arrangement
This simple arrangement consists of a single (three-phase) bus-bar to which the various feeders are connected. In case of fault...
What is meant by MEMS
Micro Electro Mechanical Systems 1. MEMS the full name is Micro Electro Mechanical Systems and this in a way merging,...
Write short note on selection of conductors
The selection of conductors for overhead lines is done considering the following points: selection of conductors. H.V. lines upto 33...
Write short note on type of conductor used in overhead lines
1.Conductors and their supporting structures and insulators (poles) arc the main items of overhead distribution system. Conductors are carried over...
Whether reactive power transfer over a cable is zero
The following problems are associated with reactive power over a cable : The cables for their operations require high charging...
Write short note on De rating factor for LT. Cable
Following are the standard condition for rating of LT PVC cable: (i)Maximum conductor temperature - 70° (ii)Thermal resistivity of soil...
Write short notes on short circuit rating of LT cables
Short circuit rating of LT cables : LT CAble (i)The short circuit for aluminum cables is different for copper cables....
