What is the function of earthfault relay?
Answer Posted / sethurama.
Earth fault relay is sensing the fault between phase to earth and also neutral to earth. When current flowing through earth that time it will be tripped.
Is This Answer Correct ? | 16 Yes | 8 No |
Post New Answer View All Answers
What is the maximum and minimum rating of UPS?
Define characteristics impedance?
1.what is difference in maintain Hz again Hz in USA ? 2.how to calculate the battery AH? 3.why are yearly maintained in transformer how many tests in required?
What is phase cross over frequency?
In between UPS out going changer over switch and ups raising main input, both side cable gland producing heat but the cable doesn't get heat,Why?
what are the breakdown voltage rating of mini- curcuit'transfarmer!
Minimum IR value of 1.1 kv grade 3.5c (300, 240,185,150,120,95,70,50,35,25) sqmm Aluminium XLPE cable and 4c (16, 10,6 & 4) sqmm cu arm cable between RY,YB,BR,RN,YN,BN,RE,YE,BE & NE.
why does a dc machine has high efficiency while working as a generator than as a motor ..
how can i apilly for electrical c licencese.sir,i completed B.Tech in electrical & electronics engineering in 201onot working any company
The power supplied to a 33microF capacitor from a 120V, 60Hz source will be
What products have you designed which have entered high volume production?
Sir, My doubt on cable sizing calculation, Load:74 KW calculated cable 1 run 50mm2. Now client asking us to reduce cable size by increasing runs. Sir, My question now when my mind strikes with 2 options 1) Divide load 74/2 = 36 and calculate cable for 36+36 making it 2 runs or 2) Simply i can divide 50mm2 /2 ie. 2 runs of 25mm2 Please suggest me sir
How to select batteries required for ups and the inverter if we Known load? And how AH is selected of battery?
State the points to be considered for selecting a particular type wiring.
What is the main use of rotary phase converter ?