formula for incomer breaker size calculation of powerfactor
correction unit
Answer Posted / matt
Given a system power factor of 0.9, PFC unit of 50kvar we can work out the following
50/0.9 = 56 A real current
56^2 * 50^2 = 75 A apparent current
Cable capacity - 75 * 1.35 = 100 A
Factor of 1.35 used for over rated capacitors as per
industry standards.
Breaker shall be rated at less than the cable capacity but greater than 75A. Increase cable size to suit breaker breaker sizing if required.
Is This Answer Correct ? | 6 Yes | 6 No |
Post New Answer View All Answers
EXPLAIN THE ESSENTIAL FACTORS WHICH INFLUENCES THE CHOICE OF SITE FOR A HYDRO ELECTRIC POWER PLANT
sourse is 66 KV / 350 MVA, transfarmer is 1000 KVA 6.6 / 0.415 kv, iF fault is 28.75 MVA on 0.415 KV Bus then calculat the Transfarmer Impidance
what is diff. between earthing grid,earthing mess, earting grid?
how can found motors folt current ? how can disided circuit breakers caoicity and breaking capicity ?
how to erect roof control panel?
how you taken aotitude test
How many types of oil using in H/T & L/T Oil Circuit Breakers. need Explenation ?
how can i find cable size from current rating?
i want to know that how the height of Ct ,cvt ,LA calculated on the basis of creepage distance
IF 8255 CONTROL WORD IS 94H,Tell the chip port work mode ?
WRITEDOWN FEW RELY CODES
We normally make oil soak pits under Transformers. Oil from soak pit goes to collection pit. We provide granules/pebbles under transformers. My question is weather granules/ pebbles to be filled in soak pit or not? if yes upto what level?
where the lexical paramater will use in fron end?
hi plz send me reliance placement papers..i.e electrical technical papers that have been asked in reliance test.
how to calculate the breaking capacity of different breakers.