Basics 4 min read
What is electrical power.
We know of active and reactive power from text books and other sources. But the basic concept to electric power…
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Design of electrical machines 1 min read
Synchronizer relay details – how it does the synchronization or making parallel connection of two circuit.
In parallel operation two different circuits are connected together called synchronized. A mismatch circuit if get synchronized, there will be…
Transmission and distribution 2 min read
Low power factor effect in transmission and consumer electrical system.
Low power factor effect has some adverse impact on both the transmission line and also in the consumer electrical system.…
Basics 3 min read
Why electrical equipment’s rated in KVA not in KW
The ratings of all electrical equipments are all rated in KVA or Kilo Volt Amp. But the practical use is…
Electrical Engg2 2 min read
What is rotor balancing weight or key in alternator and its function.
Rotor balancing weight is provided to reduce the excessive vibration due to its high speed rotation. Excessive vibration has some…
Electrical machines 2 min read
Alternator alignment with prime mover – how to do & test.
Alternator alignment with the prime mover is very important. With a little misalignment there will be severe vibration that will…
Basics 3 min read
What is power transformer.
ANSI/IEEE defines a transformer as a static electrical device, involving no continuously moving parts,used in electric power systems to transfer…
Basics 2 min read
Why transformer oil is used in transformer & its types.
The core-coil of transformer carry high voltage and current. The surrounding construction is isolated from the core-coil. A certain distance…
Design of electrical machines 4 min read
Electrical insulating mats or rubber mats requirement as per electrical Standard.
As per international standards for safe workplace with electrical system and equipment, the use of electrical insulating mats or rubber…
Basics 3 min read
International standards requirements on single line diagram or SLD
There is some specific requirements on single line diagram or SLD in NFPA 70E standard. An up to date SLD…
Electrical machines 3 min read
Why iron core is thin & laminated in transformer instead of solid core.
Iron core is thin & laminated in transformer to avoid the loss of eddy current. Eddy current is induced in…
Electrical machines 3 min read
Losses in electrical machine- in brief.
To discuss about losses in electrical machine at first the term “electrical machine” should be cleared. As electrical machine in…
