Answer / pradeep

ups means uninterrupted power supply when main power switch
offed automatically ups online condition
inverter means only circuit device.

Answer / debashis paul

UPS - ARE USED FOR PROVIDING BACK UP TO SENSITIVE
ELECTRONIC DEVICES SUCH AS COMPUTER,SERVER,SENSORS,MEDICAL
EQUIPMENTS,TELECOMM ETC . REASON BEING UPS PROVIDES POWER
BACK UP WITHIN 1-10 MILI SECONDS.THIS GAP CANNOT BE SENSED
BY ABOVE MENTIONED DEVICES.THRERFORE THE DATA IS NOT LOST
AND IT DOES NOT REQUIRES REBOOTING .
INVERTERS ALSO PROVIDES POWER BACK UP DURING POWER
FAILURES,BUT THE TIME TAKEN FOR PROVING BACK IS 100-400-
MILLI SECONDS.TRANSFER TIME WILL AFFECT THE DEVICES.

Answer / sandeep1517

ups & inverter both are dc to ac converter
only difference of time in o/p signle
inverter have time lag around half seconds.
but ups have no such time lag.

Answer / parthiban

The difference's between an inverter and a UPS are as
follows

1) CHANGE OVER TIME: An off-line ups (the standard)
switches to the batteries in 3 to 8 milliseconds, after the
main power has been lost.
The typical Inverter changes over in about 500
milliseconds

2) SIZE: Off-line UPS's go up to about 2kVA
Inverters go to 16kVA, 3 phase(what i could find browsing)

3)VOLTAGE REGULATION: UPS's have automatic voltage
regulation (AVR) set on average at 220v
Inverters output voltage is the same as the mains input
voltage (South Africa = 230V)


An inverter can transform a voltage from say 12volts dc and
up to 230v AC.
UPS means Uninterrupted Power Supply. If you use an UPS
between your computer, and your socket in the wall, and
experience a power failure, the UPS will act as a battery
and give you some extra minutes work time to save your
work, and turn of the machine properly. Without the UPS
your machine would die immediately.
*note: the UPS is NOT a normal battery, so you cant put a
battery between your computer and the mains.



2) The basic

difference in layman's terms is:

While both provide backup power during mains outage, with
the UPS the switch is instantaneous whereas with the
Inverter there is a gap of a second or two. This gap is OK
for household gadgets such as lights, fans, fridge, etc.
but not OK for computers.

In technical terms:

UPS: The mains power comes to the UPS. The AC is converted
to DC and this DC is constantly charging the battery. The
output of the battery is fed to the Sine wave inverter and
it converts DC to AC and this feeds the equipment. Since
power out is always drawn from the battery, there is no
time lag when mains switches off; it just stops the battery
from being charged and the UPS continues to supply power
till the battery runs out.

Inverter: The mains powercomes to the Inverter. This is
directly sent to the output but the AC is also converted to
DC and this DC is constantly charging the battery. A sensor
and relay mechanism checks whether the mains is ON or OFF.
When the main switches OFF, the relay actuator triggers to
switch from mains to inverter. Rest is same like the UPS.
Because of this sensor and relay, there is a gap between
triggering.

UPS involves more costly circuits and is therefore more
expensive to make and sell.

Apart from these there is another difference. The AC supply
has a pure sine wave whereas in an offline UPS the output
is a near sine wav, not a pure sine wav where as for a
inverter its step wave. This is the reason that we hear a
hum when we attach a inductive load to a UPS or a inverter
but we do not hear anything when its on AC supply.
Note: There are comments associated with this question.
See the discussion page to add to the conversation.
Microtek Inverter Onlinewww.HomeShop18.com/MicrotekInverter
Starting Rs 5500. 1 YR Warranty Free Home Delivery. Explore
Now!
switching power supplywww.nipron.com
Embedded Power Supply for Industry High quality industrial
PowerSupply
ups-inverterwww.ups-inverter.com
ups-inverter reliable export Suitable, Sine wave, best
quality
Ads

Answer / balki

UPS- EB source is converted to DC power through rectifier(DC
to AC), this connected to battery and to Inverter(DC to AC)
this AC supply can be fed to load in this case even EB power
failure the power will be fed to load from battery to
Inverter to load. So there is no power interruption to load
thats why it called as Uninterrupted Power Supply.

Inverter- EB source is converted to DC power through
rectifier(DC to AC), this connected to battery and to
Inverter(DC to AC). At normal EB power available time the EB
source directly fed to Load, If EB power failure the switch
will be activated and stored power in Battery will be fed to
load(battery to Inverter to load). So there is a power
interruption(less than 20 Sec) to load.

Answer / mohamed nizar

The difference's between an inverter and a UPS are as follows

1) CHANGE OVER TIME: An off-line ups (the standard) switches to the batteries in 3 to 8 milliseconds, after the main power has been lost.
The typical Inverter changes over in about 500 milliseconds

2) SIZE: Off-line UPS's go up to about 2kVA
Inverters go to 16kVA, 3 phase(what i could find browsing)

3)VOLTAGE REGULATION: UPS's have automatic voltage regulation (AVR) set on average at 220v
Inverters output voltage is the same as the mains input voltage (South Africa = 230V)


An inverter can transform a voltage from say 12volts dc and up to 230v AC.
UPS means Uninterrupted Power Supply. If you use an UPS between your computer, and your socket in the wall, and experience a power failure, the UPS will act as a battery and give you some extra minutes work time to save your work, and turn of the machine properly. Without the UPS your machine would die immediately.
*note: the UPS is NOT a normal battery, so you cant put a battery between your computer and the mains.



2) The basic

difference in layman's terms is:

While both provide backup power during mains outage, with the UPS the switch is instantaneous whereas with the Inverter there is a gap of a second or two. This gap is OK for household gadgets such as lights, fans, fridge, etc. but not OK for computers.

In technical terms:

UPS: The mains power comes to the UPS. The AC is converted to DC and this DC is constantly charging the battery. The output of the battery is fed to the Sine wave inverter and it converts DC to AC and this feeds the equipment. Since power out is always drawn from the battery, there is no time lag when mains switches off; it just stops the battery from being charged and the UPS continues to supply power till the battery runs out.

Inverter: The mains powercomes to the Inverter. This is directly sent to the output but the AC is also converted to DC and this DC is constantly charging the battery. A sensor and relay mechanism checks whether the mains is ON or OFF. When the main switches OFF, the relay actuator triggers to switch from mains to inverter. Rest is same like the UPS. Because of this sensor and relay, there is a gap between triggering.

UPS involves more costly circuits and is therefore more expensive to make and sell.

Apart from these there is another difference. The AC supply has a pure sine wave whereas in an offline UPS the output is a near sine wav, not a pure sine wav where as for a inverter its step wave. This is the reason that we hear a hum when we attach a inductive load to a UPS or a inverter but we do not hear anything when its on AC supply.

Answer / ajay

An Inverter is a device which convert DC power to AC when
the mains is power off.
An UPS is a device which gives us uninterrupted and uniform
power when mains is on( no voltage fluctuation)and if power
is off it gives same uniform power by using battery.

Answer / daniel eluri

inverter -

inverter is a device which
converts dc into ac.The inverter may also contain a battery
unit and an dc to to ac
conversion unit based on application. when the power fails
the inveter will deliver power by switching from main
source to battery source. The switching time here is
normally greater than 20 ms (because of electrosattic
switching).

UPS

UPS is a device,with a combination of rectifier and
inverter which delivers power, even if the power source
fails without any interruption to load (Uninterrupted power
supply). When compared to inverter here the switching time
from main source to backup source is less than 10ms (due to
semiconductor switching), so that sensitive electronic
devices such as computers, PLC, DCS, I/O modules will not
be effected even if power fails.

Answer / arun

An inverter is a crkt which only converts DC to sin wave AC. However some commercial dedicated Inverter also provides DC charging voltage for battery backup and uses these backup voltage to convert into AC, thus act as online UPS.

An UPS is consist following mandatory crkt:- Battery backup, rectifier crkt for charging battery and an inverter to convert DC to AC. All mentioned crkt are housed in one casing if the no of battery is less/ small but if the batteries more or size is more, battery bunk can be installed on seperate housing. Eg. 3 phase ups/ more than 1 kva ups

(all voltge value are as per design crkt)

Answer / vengatesh

Two types of ups are used. one type is on line ups another one is off line ups....off line ups tell and asked inverter. Off line ups function in AC mains direct to load at same time battery is charging help to battery charger mains supply is failure time is stored energy conversion to DC to AC in load side.... Off line ups switching time is more then 20 Ms......, On line ups function is Mains on time convert to AC to DC supply stored in battery than same time invert the DC to AC supply in load side. Mains failure time battery input is cutoff
output is going on in the load online ups switching time is less than 10ms....

how to reduce the initial starting amps which is equal to the running load amps

3 Answers  

What is the use of Isolation Transformer, and Neutral is using for return path, finally this current is going.... but same time the voltage of the neutral should be below 1 V...

6 Answers  

I need the proper answer on :- What is the Earthing Value as per the standard for Raw power and UPS Pit and in panel /DB N-E value ???

2 Answers  

What is the method to solve circuit using source transformation?

0 Answers  

actual rated capacity of a disc insulator??

5 Answers   OPTCL,

Why only 1 CVT in Y-phase is used for synchronization in 3 phase power system?

1 Answers   Reliance,

why in transformer there is not rotating fiddl/ magnetic field like motor

4 Answers  

What is meant by impedance? difference between high & low impedance ?

0 Answers  

why occ characteristics of generator is also called as magnatization characteristics ?

0 Answers  

how the speed of the gets motor regulated. does it draw the same current on the all speed level.

0 Answers   Danko,

what is wave trap? And how it works?

3 Answers  

WHAT IS SYNCHRONISING?

8 Answers   L&T,