Answer / sudhir

Capacitor is not suitable load for Engine testing, It will
trip high Voltage of AVR if it is sycronous generator.

Best loag for testing resistive.

Answer / kj

Answer 1 is correct.

Normally a resistive load is used for testing a DG. As most
DG's are rated at 0.8 lagging power factor the resistive
load is calculated at unity power factor load on the DG.
This is usually 80% of the kva rating. This tests the
engine to full load.

Where it is required to test the generator at full load
also an induction load is used together with the resistive
load to give the correct power factor.

Capacitor loads are not normally used as DG's do not
operate safely on leading power factors.

what is difference b/w HT & LT and the range of HT & LT ?

22 Answers   AF, Schneider,

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the total iron closs in a transformer core at normal flux density was measured at 25hz and 5ohz and was found to be 250w and 800w respectively.the hysteresis loss at 50hz would be................?????

1 Answers   ABB,

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Brushes are placed at magnetically neutral axis,when brushes reach that point,the armature conductor gets shorted,but it can be seen that the dc supply is also shorted,wont that get damage? help me plz

0 Answers  

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what is the importance of creepage distance in disc insulators

1 Answers  

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What are the reasons for AVR failure in LT DGsets ?

2 Answers  

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how the high voltages are produced?and what it causes?

4 Answers  

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In Single Phase AC Supply,If Voltage between Phase and Neutral is 230V means what will be the Voltage between Phase and Earth?

2 Answers  

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why we use low kv lightining arrester in line for example 9 kv using in 11kv

1 Answers  

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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?

0 Answers  

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what is the most permissible winding temp when we conducting a generator load test?(condition no load)

0 Answers  

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Which one hurts more AC or DC Current ?

10 Answers  

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what is the difference between RTD & TERMO COUPLE?

1 Answers  

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