Interested to Buy Any Domain ? << Click Here >> for more details...
Answer Posted / sreenu
It is required to bring earh resistance to min. value
around 1-2 ohms for good earthing and the no.of earthings
to be done varies as per site conditions.
| Is This Answer Correct ? | 7 Yes | 0 No |
Post New Answer View All Answers
what is the use of sdf?
hi frnds...pls send me aptransco previous papers .....pls..pls,,,(madhar.rocking@gmail.com)and suggest me some websites
PLS SEND THE RRB CHENNAI MODEL QUESTION PAPER my email id is ganesan98655@rediffmail.com
Air circuit breaker safety
What is called limb of a transformer?
what is difference between 5A and 100A CT constructional wise and operation?
why moisture formation found in XLPE Armoured cable outer sheath
Dear all, I just want to ask an expert on this forum for some insights. For the magnetic balance test, when applied voltage on a Delta-Star transformer e.g. Dyn11, the following relationships apply for HV side: 1. H1-H2 = H2-H3 H3-H1 2. H2-H3 = H3-H1 H1-H2 3. H3-H1 = H1-H2 H2-H3 For the LV side also: 4. X1-X0 = X2-X0 X3-X0 5. X2-X0 = X3-X0 X1-X0 6. X3-X0 = X1-X0 X2-X0 Is there a similar pattern for Y-d, Y-Y, D-d? And how about Y-z, D-z, Z-y transformers? I've tested a YNzn5 transformer and for LV side I don't see the pattern. In this particular case I got for LV side the following (see values below): H1-H0 H2-H0 H3-H0 X0-X1 X0-X2 X0-X3 128.0 119.9 7.2 29.2 13.3 15.8 70.7 128.4 59.2 23.4 22.0 3.6 7.2 120.1 128.1 13.4 29.3 15.8 What is the relationship here for LV? For row 1 I see the relationship, for row 3 I also see but it's shifted, but for row 2 I don't see such relationship. Any suggestions, answers, someone?
can i connect REF and Differencial relay in 1 CT core for transformer protection?
What is kvar?
What is difference between unity power factor wattmeter and upper power factor wattmeter? In short circuit test of transformer the wattmeter used is unity power factor type or upper power factor type wattmeter?
WHY NUTRAL GROUND SYSTEM USED IN 33KV SYSTEM
Difference between transition and diffusion capacitance
If you don’t have coal, salt and copper, then how would you earth your connection temporarily at a camp site.?
What is genrally the % Impedance of a Dg set? How can we calculate Earthing conductor size for a DG set?
