Hoe to calculate body earthing conductor size ?
Answer / aamod tripathi
The body earthing conductor sizing is done in india and
internationally by IEEE 80 :2000 standard and IS code 3043
These instruct the different formulae which are to be used
for calculation purpose generally it requires
1. fault current
2. time duration of the fault
3. a factor which is denoted by K and is dependent on the
material used for earthing.Table (1.D)(This takes into
account the ambient and operating temperature of the
material)
In case of a power house where many Transformers and the
switch gears are installed there we have to install
acompletee earthing grid which is like a square or
rectangular net of rods. the number of rods and ground rods.
The most important point in both the powerhouse earthing or
any other kind of earthing we have to keep in mind that the
earthing arrangement should have the resistance less than 1
ohm........ it is an essential conditon that must be
fulfilled.....
| Is This Answer Correct ? | 14 Yes | 5 No |
is it ok to switch lights from a mcb instead of switches
Draw the vector diagram and condition for the following: 1) Dyn1 2) Ynd0 3) YnYn0
what is the path of electron when a static electron is placed in a magnetic field?
pls tel me the electric train traction motors name plate details like rpm,torue,voltage,amps,watts..ect..
how to conduct dc resistance test for rotor of an alternator and how to measure the rotor dc resistance value theoritically?
what are doing the duall connetion in tree phase 10hp or etc motor with circuit diagram
If two hack saw blades, seperated by 1mm thick paper,are connected across 230volts, and immersed in water,then they start getting heat. This is fact,i dont know how they get heated.Blades are not directly connected together. Please if anybody knows the fact ,revert back to me
types of transformers?
principle of power export and import in captive power plant.Is it depends upon voltage,current or frequency?Plz explain briefly.
Can we inject more current in ct primary paralleling 2 loading transformers/Injection kit at a time?let ct ratio be (5000/1A)(per kit rating 2000A range),i need to inject 5000A,if this cant b done means wat is d optional?
what is the difference between elcb,rccb,mcb.
define reluctance motor & its operation ?whether its operating single phase or three phase ?
Civil Engineering (5086)
Mechanical Engineering (4456)
Electrical Engineering (16639)
Electronics Communications (3918)
Chemical Engineering (1095)
Aeronautical Engineering (239)
Bio Engineering (96)
Metallurgy (361)
Industrial Engineering (259)
Instrumentation (3014)
Automobile Engineering (332)
Mechatronics Engineering (97)
Marine Engineering (124)
Power Plant Engineering (172)
Textile Engineering (575)
Production Engineering (25)
Satellite Systems Engineering (106)
Engineering AllOther (1379)