why we use 110vac in overhead crains? why not 220v, 24v
Answers were Sorted based on User's Feedback
Answer / manuel philip chennai
Control voltages only control the entire operation of the
crane or machine.operating voltage will be hire. if we use
low control voltage it is safe for the person who is
operating the equipment. For control pendent push buttons
only control voltage is supplied,if there is earth fault the
pendent operator will not get heavy shock. there are other
control voltage like 24,48 volts also used in machine tools
and other equipments. it is for only the safety condition of
the operator low voltage is used.
Is This Answer Correct ? | 6 Yes | 1 No |
Answer / vijendra joglekar
Dear Manuel, can you please tell me wht is earth fualt u
mean to say if use 110vac not getting heavy shock rather
then 220v i am not getting wht u r saying can u plse explain...
Answer is every equipment is designed for particualr
technical specifications if u r using 220v nothing will
happen since it is designed for 220v,24v etc there is no
thing like earth fault becoz u know earth fault only occurs
if there is any fault in that particular equipment...
Is This Answer Correct ? | 2 Yes | 0 No |
for same body resistance the high voltage causes high
currents to flow through the body. for ex body resistance is
20kohm(generally).220v gives 11ma.for 110v it is 505ma,
below the danger value. if it incase not not grounded
properly it may helpful to limit the shocking current
Is This Answer Correct ? | 1 Yes | 0 No |
why ups rated in kva
Three phase alternators are connected in star connection why?
How do you protect your appliances from harm in case of neutral failure in a three phase power supply set up.
what is diffrence between dc motor and dc generator?
why multiplying factor is used in wattmeter???
describe the A.C. Generator Testing procedure
what is OLTC and difference between RTCC and OLTC
What is the main difference b/t Earth leakage relay & Earth fault relay.I want protect my LT panel(Distribution Panels)which relay have to propose.......
how to calculate the capacitor rating for improving power factor
10 Answers L&T, Property Solutions, Synergy, TAFE,
What is the diffrence between ofline ups and online ups?
Why using synchronising methed in DG's sets?
What is the polarization index value ? (Pi value)and simple definition of polarization index ?