1)how many types of earth? 2)how many types of megger and how
to select that range? how much time taken for megger
calibration( we r using megger)
Answer / c.vadivel
Earthing of electrical machines are current are Bradly
classified in to current carrying earth and non current
carrying earth.
Current carrying earth:solid earthing,resistance
earthing,inductive earthing,grid type earthing and
capacitive earthing.
non Current carrying earth:making potential free metal part
associated to electrical machines and switch gears.
Megger are according to potential measurement classified as
low voltage megger ie 0 - 500V.,medium 0-1000V.,high voltage
megger 0-5kv,and 0-10kv
Is This Answer Correct ? | 6 Yes | 1 No |
Why are use 22 kv 3ph supply ?
CAN ANYBODY PLEASE TELL ME HOW TO DESIGN A SERIES REACTOR FOR LIMITING SHORT CIRCUIT FAULT CURRENT??
How may I enrol or get admission to your program?
What are linear and non-linear systems?
How the value of KVAR of capacitor bank used in switchgears calculated??
what is the safe meggar values for motor, transformer HT, LT and Cables? IF we want to replace I/C bay at our 220 kv substation which is of 140 mw load capacity bay to be replaced by 400 mw capacity bay.other than CT(1200/1) what are the other equipment i have to replace. why we generally use 3.5 core cable or in other word 1/2 core for neutral and also confirm me that in balance conditiob(3 phase)current in neutral will zero
HOW WE CALCULATE CURRENT IF THERE ARE NOT PRESENT ANY AMMETER OR MULTIMMETER??????
what is the principal of starting of a three phase induction motor.
Why dry type cast resin transformers tap link blast in HV side while power shut down times on load?
which motor have relatively high power factor and what is reason for have high pf? 1.capacitor run motor 2.shaded pole motor 3.capacitor start motor 4.split phase motor
How we can calculate the life of Lead acid battery
Why a motor blower cobination draw more current at winter than summer?