why Batteries & Battery chargers are used in substation?
what is the different between UPS & battery charger?
Answer Posted / amit khamesra
In lieu of a more reliable power supply source, DC supply
is used in place of normal AC supply. If there is a
blackout, AC power will not be available n the electrical
protection devices will not operate. To avoid any such
situation, DC supply is used. DC supply is provided by
batteries and charger is used to keep the batteries healthy
by trickle charging the batteries in Float / Boost mode as
required. UPS is an uninteruptable power supply which uses
converter inverter set. AC input is first converted to DC
and again converted to AC. The battery bank installed for
UPS is connected in between converter inverter set so that
if AC supply to converter fails, battery comes on load and
supplies DC to inverter for maintaining the AC power supply
at output end.
Is This Answer Correct ? | 17 Yes | 9 No |
Post New Answer View All Answers
Explain the working of any one cutting machine
WHAT IS ELECTRICAL MAINTAINTENCE ?
for what purpose the star point is done in ct
star delta starter contorl circuit... drawing..
In EHV transmission line a neutral grounding reactor is often placed at neutral point of shunt reactors. What is the recommended protection for this neutral grounding reactor? Should I use a fast closing switch to bypass neutral grounding reactor when this protection operates?
When MICC cables used ?
What is UPS and How do you maintain the UPS Maintenance? Brief Description on UPS maintenance.
In ups static switch if i gives the supply at output end it will open the circuit in stactic switch or not if it will open then how it operates.
WHAT DO YOU MEAN THE DIFFERENT TYPE OF CURVES OF RELAY LIKE STANDARD INVERSE, VARY INVERSE, NORMAL INVERSE, LONG INVERSE ETC....
Why we use ups battery and dsdb battery in thermal power plant
What is time invariant system?
Would you recommend to replace all oil filled cables with xlpe cable for hv transmission with the current technolgy for xlpe cable?
Define settling time.
WHAT IS IM (INDEX OF MOUNTING )IN MOTORS
How relay coordination has to be done? what are the inputs are required for this? Please explain this with calculation method?