Answer Posted / dilip sonawane
its an earth leakage circuit breaker,its has ct inside which ensures that return current by neutral is same as that of phase. if any value changes it get trip/operated.
for human safety we consider- 30ma
for equipment safety -300ma.
so ELCB r designed on above rated sensitivity value
Is This Answer Correct ? | 5 Yes | 1 No |
Post New Answer View All Answers
What is effect of harmonic current (Draw by VFD) on power system/ electrical Equipments ?
what is Fault level? why it is calculated? how will u decide same for our plant?
Differnce between negative Pahse SequenceFunction and unbalance Function?
We have Diesel generator of 200KW. fuel consumption is always same,even connected light load or full load. Is it right?
Explain the role of a car driver as one of a feedback mechanism.
What is state space method ? Why its used ? Can it applicable on linear, non-linear, 1st order, higher order, homogeneous, non-homogeneous, open-loop , closed loops , stable & unstable systems ?
how can service sitting be setted for MCCB?Example for sittings IR (CURRENT RATING),IS(CURRENT STARTING)IO (current operating)?
What is PEC??Applications........
Why do we require transformer with less specific weight if supply frequency is increased?
How to arrange a hous hold earthing system to keep minimum earth resistance( below 7ohms).
How to know the following data of synchronous generator 1. D-Axis Unsaturated Reactance 2. D-Axis Unsaturated Transient Reactance 3. D-Axis Unsaturated Sub - Transient Reactance
Why do you have to use Protecion relay with the function MTB ( Mechanical Trip Button ) for electrical system.
the typical output of a solar cell is........
PAC and simple Ac different
What is UPS and How do you maintain the UPS Maintenance? Brief Description on UPS maintenance.