What is Energy based relay coordination & time based relay
co-ordination? In which type of distribution arrangement
these methods are applicable?
Answer / omar aziz
Every electrical equipment installed in a power system has
an I2t rating. Eg(20kA for 1sec) This indicates the maximum
permissible energy that the equipment can withstand before
blowing into bits. Protection co ordination must ensure
that this damagiong curve is always protected by the
protection system. This is Energy based coordination.
Time based coordinaation is when no energy basis are
required but time selection is picked for personnel safety
reasons and not equipment damage reasons
Is This Answer Correct ? | 0 Yes | 0 No |
what is settable hystersis protection? If any body knows plz kindly post the answer..
What happen if transformer neutral path get removed ?
3,12,24,33,_ ,75,150 Find the missed number in this sequence
what is difference between sub-station and switch yard.
Why r used of cable 50sq.mm and above size cable in 3.5 core. And below size in 4 core ? any technical reason please explain it
block diagram of 2 ups system connected in parallel mode?
MY QUATION IS ABT THE MAIN POWER TRANSFORMER IN STEEL PLANT , I WISH TO KNOW THAT WHY TRANSFORMER PROTECTION NOT TRIP AS CABLES ON THE SECONDAY SIDE IS WATER COOLED. TRANFORMER DETAIL NORMAL KVA--150 KVA PRIMARY VOLTAGE --34.5 KV SEC.NO-LOAD VOLTAGE---1.290-908-690V ( WITH PRIMARY DELTA CONNECTED) CONNECTION--D/d (EXTERNAL CLOSED) CONSTANT RATEING FROM--1.290-908V CONSTANT CURRENT FROM--908-690 VECTOR GROUP--D III
What is nyquist contour?
Iam Preparing For Ap Transco Assistant Engineer (ELECTRICAL) Exam how To Prepare What Is The Refernce Books.can You Give The Advises To Me.tahnk You. This Is Radhika Iam Preparing For Ap Transco Assistant Engineer (ELECTRICAL
What's the difference between a generator using 50Hz and 60Hz? When do we need to use a generator 50Hz and 60Hz?
What is a compensator?
How one can check the charger of the mobile phone or any other charger .......... that is it working ? if , working is it delivering the required supply which is needed by the battery to charge properly ?