Whether earthmat designning is done only for sub station or
it can be done for multy residential complexes also?
What is the size, type & arrangement of the earth grid to
be done?
Answer Posted / a.p.nanjappa
No.it is done for building campus,
industries,hospitals.large campuses, tv station...
It depends on load,voltage level of source and distribution
sytem.
refer IEEE 80 hand book
| Is This Answer Correct ? | 0 Yes | 0 No |
Post New Answer View All Answers
IN induction motor pf is increased using capacitors.what will be the effect on motor and system when very large capacitor is accidently installed and pf goes leading.
while doing high voltage test on 11kv/433 distribution transformer why we only give 28 kv on hv side and 3kv on lv side for power transformers what is the value what factors it depends
why voltage form factor of PT are increase , when it is ecpected heigher spikes in system. how it is calculated.
Explain the advantages and disadvantages of hydropower plant?
WE know that for Inductor X=2pifL,In DC f=0,then X=0 so,V=IX=0;But In the DC excitation of rotor of AC generator,DC motor field coil which coils are inductor so why does not applying DC voltage short the rotor coil of AC generator and field coil of motor?If it would then DC source might be damaged but it is not happened. Why does the strand conductor of Electrical power transmission line make twist?
how to wiring it with contactor and timer together
Hoe do calculate the Cable size for Amps rating ?
Igfet is a
How a capacitor discharge weld power supply works? what is the use of a pulse transformer?
I just purchased a 4 position cam switch to be used to operate a 3-speed blower motor. The motor is a 10 amp motor and has 3 wires that are used to control speed. The cam switch was rated at 660V 20 amps but when I received it, I noticed that it has AC-15 operational current rating (Ie) of 4/5 amps. If I am reading the label correctly. the 4/5 amps is related to 440v/220V (Ue). Other ratings are AC-3: 5.5A, AC2: 7.5A and AC-4: 1.5A. My questions are 1) Is it safe to use this switch with the motor I have 2) what is the difference between the 20 amp Ith ratting and the Ie operational ratings?
how will we calculate the copper wire load..
What is Servo Ventilated Motor?
What is the suitable transmission voltage?
What type interview questions ask in Electrical technicians
Installation resistance for whole installation of 16 kva & 25 KVA DTRA a) Between each conductor b) between conductor to earth c) installation resistance for each apparatus, each conductor to earth d) earth resistance for the system of earthing