what is efficient load of transformer in percentage
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How to Decide the Location of Earth pit for Compressor in Oil Depo? and How to measure the resistance of earth pit Pls explain me with the help of Circuit Diagram?
in the directional overcurrent and earthfault protection,normally we are setting the angle 45 deg lead for phase fault overcurrent and -45 deg lead for earthfault fro forward direction.but both the fault are operating on the same angle region only.why?how the relay will response?
ASTM D 3455 - Standard Test Methods for Compatibility of Construction Material with Electrical Insulating Oil of Petroleum Origin has been used for Testing Transformer Oils with a product placed in it. Aged Control Oil has a Power Factor of 0.032% at 100°C. Aged Oil with a Test component has a Power Factor of 0.093% at 100°. Is this increase acceptable? If not why? How much increase is acceptable?
What is the type of earth fault protection used in battery? explain.
i have flexible wire. size of conductors is 0.190 mm & no.of conductors are 48. then size of wire comes 1.37 sqmm instead of 1.5 sqmm . the what is tolerance for this size.
What is difference between insulating medium and fault current interruption medium in a switching device.
what is the generator rating for 40 amp load of 3phase motor.?? 400v voltage of generator... plz tell me with formula its urgent...plzzz... and also tell me that this 40 amp at all phases mean 40 amp on red,40 amp on yellow,40 amp on blue...... or the total sum of that 3phase is 40 amp....
how we can calculate 2 phase welding transformer rating or total power?
Did RMU have ct and pt ?
what is the use of sdf?
What is installed in PAC that is control the humidity
i want design of D.C.MOTOR 1HP 960RPM AND 2HP 960RPM ITS URRGENT
what is mean by NPS (Negative phase sequence)fault? what is the difference between EFR & OCR faults?
what is transient enclosure vltage , very fast transients, very fast transient over voltages
What are the temperature elements?