Answer / mashani

presure switch is used to shutdown the substasion if the
presure inside the substasion is abnormal....this pressure
switch will tripped all Circuit Breaker inside the
substastion

Answer / k.prakashchandra

Pressure switches are used in pneumatic circuit breakers to
maintain air pressure

Isolation transformer primary to sec turns ratio?

2 Answers  

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without name plate detail of blower how we can find out the HP & Rpm ? the input voltage is 230v single phase

1 Answers  

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How core saturation effects the secondary voltage (whats the theory) of a current transformer in service?

1 Answers  

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how mach PF mainten in DG

6 Answers   Siemens,

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Why Diffrential and Ref relays are used together although Diffrential relay can protect Pri and Sec of Transformer

1 Answers   Qatar Gas,

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I have a shop heater with a 1/3 hp capacitor start, induction motor driving the fan. Intermittently, the fan motor speeds up significantly for several seconds (15-60 sec) then slows to normal operating speed. The manufacturer suggested changing the capacitor which made no sense, but I did it to no avail. Could this possibly be caused by the centrifugal switch intermittently reconnecting the start winding?

1 Answers  

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what should be the ideal gauge of wire (In sq mm) for different loads in Ampere?

0 Answers  

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Why we make earth connection with Transformer Body and What will be the minimum size of copper wire as per code with respect to KVA rating of Transformer?

0 Answers  

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Can i connect all earth pits in ring system..., And wat IS 3043 says...please help me

1 Answers  

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in underground cables, we have a grading method called 'capacitance grading' why is it called 'capacotance grading' although we do not use any capacitor in it?

1 Answers  

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What is pi controller?

0 Answers  

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can u guys pls suggest a good material for learning abt switch yard and its components

2 Answers  

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