what is the condition for vector group of Dyn5

2 Answers  

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Dear All, In a 400V power system, ratio of three current transformers installed incoming switchgear is 4000/1. Maximum three phases short circuit current of this system is 48kA. One CT is installed on neutral of upstream transformer (6/0.42kV, solidly earthed) for 51G protection. Would you please inform me about the correct CT ratio of this current transformer (on neutral)?? Thanks a million

2 Answers  

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If two hack saw blades, seperated by 1mm thick paper,are connected across 230volts, and immersed in water,then they start getting heat. This is fact,i dont know how they get heated.Blades are not directly connected together. Please if anybody knows the fact ,revert back to me

3 Answers  

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for flour light (garden light) how much deep need to put 222ov 0

1 Answers   Anantara Hotels,

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Where -48 volt DC use & why?????????

10 Answers   Ericsson, INDUS, Indus Towers, Telecom,

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Define heating time constant of electric motor.

3 Answers  

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what happened if power factor is "1"

9 Answers   Reliance,

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Hello friends, Can anyone explain the concept of zones in Bus bar protection and how can we differentiate the main zone and check zone in Bus bar protection

1 Answers   ABB, NCC,

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wht d.c produces corrosion

1 Answers  

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what is the function of series reactor

3 Answers   Adhunik, INOX, RMSI,

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What is the direction of rotation of blades in a table fan and in a ceiling fan ?

11 Answers   Power Grid,

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how to calculate power factor of capacitor? what is transformer rating?

2 Answers  

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