Is it possible to get earth resistance value"zero" Ohm
practically???
If yes,which type of earthing???
Answer Posted / chellappan s
It is thoritical and cannot be achieved. Acceptable value is 1 ohms for medium voltages by practice.
Still lower value may be archived by several methods where sentive equipments are to be earthed. It will be costlier.
| Is This Answer Correct ? | 0 Yes | 2 No |
Post New Answer View All Answers
how to select diiferent power transformers of same capacity on no load loss and full load loss by economical point of view.?
If 100 KAV USP dedicated earth got disconnect / Cut. What will happen at load.
What is nichols chart?
i want use the cable size 16cx4 core aluminium usege watts 240x2000w this cable size is correct?
design a 3 bit synchronous and asynchronous counter using T- flipflop
how make megger test for control cable like 12c x 1.5mm and what it apply voltage and test timing details.
what is the difference between electrical and electronic choke?
What is the difference between AC and DC injection methods for rotor earth fault protection
DG cranking voltage?
Greeting to all members, How to calculate spill current when we have different ratio CT and Class for REF(Low Imp) I have 500/1A 5P20 @line side n 400/1A CL.X @ Neutral.
what types of cable used in underground coal mining?
why ss stablity limit is more transient stablity limit?
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 we decide scurt (disc) of insulator with respect to kv rating
If VFD is On but no starting commond on it. so how many outpout voltages of VFD