Please Help Members By Posting Answers For Below Questions
How the setting of the vector surge relay shall be
calculated when the relay is to be used for Grid islanding
why the earth is taken minimum in supplying? wather it the
proportional factor to getting work any equipment or a power
What is ignition module of a CAT Gas Genset G-3508 Engine,
Alternator SR4B Series. HOw its checked for correct
functioning.Is it repiarable or replacable?
Dear Mr B C pal...Can you plz. put some light on principle
of operation of Z-Ct in conjunction to its use with
1Cx1000Sqmm HT Cables & Directional Ground Fault / Over
Voltage Relays...Regd..Parag v K 9899115632
What is the difference between PLC & DCS?
star delta starter contorl circuit... drawing..
how we can decide that what value of ht line will come to any commercial building? (ans except According to the building load)
What are all the problems occured while ac generator
running in leading power factor at full load condition?
HOW TO CALCULATE HV CABLE SIZING?
A T-T transformer can not be parallel with transformer
A V-V B star-delta
C star-star D delta-delta
hi friend i am going too attend for hpcl in this month
please help me by sending written test question papers
i am in the stream of E.E.E
how harmonics generated in induction furnance? how minimise
For the requirement of a furnace of temperature range up to
1200 oC using silicon carbide rods, What is the required
rate of transformer needed (please do it with all details)?
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?
If you don’t have coal, salt and copper, then how would you
earth your connection temporarily at a camp site.?