what is difference between earth fault& restricted earth
fault.
Answers were Sorted based on User's Feedback
Answer / k.prakashchandra
EFR is for general earth fault and REFR is for earth fault
within the area covered or for a certain equipment e.g.
tranformer.
Is This Answer Correct ? | 5 Yes | 4 No |
EF/SEF/50N/51N/51G can be detected by core balance CT or by vector summation of line CT(residual)
64REF is by comparing current flowing at TR neutral CT with residual CT at line CT,
Is This Answer Correct ? | 0 Yes | 0 No |
Answer / harnish desai
REF will detect earth fault within its equipoment & work on
principal of vector sum of Ir + Iy + Ib + In = 0.
Ef relay will sense current in only neutral CT & operate
relay.
Is This Answer Correct ? | 0 Yes | 1 No |
how to check avr of dg set of 125kva
BRIEF ME CHECKING PRCEDURE OF BATTERY 12V 26AH
why the vfd motor take current high in vfd panel then mcc panel.current in vfd panel=160A in 93%.and mcc panel it shows 130A. (132kw motor)
29 Which of the following breaking method save energy? A regenerative breaking B plugging C dynamic breaking D none of above
what the good value of earth resistance test
When we need start the motor by method of star delta which size (KW or HP)motor should must be operate in Star Delta Method,
why and where we use early make & late break contacts in protection?
Why voltge arev transformed in to 132KV/66/KV/33KV like that
How to Convert Gen KW to H.T amps ?
How does MCB operate without relay..?
WHAT MEANT BY MCC PANEL?
what happens when series resonance occurs?