Before buying the UPS, Pls look for the below features, which are critical
- Total Load: The total power draw
(in Watts) of all equipment connected to the UPS. Always add 10-20% buffer
- Runtime/Backup: The number of minutes/hrs
the UPS will be required to power your equipment in the event of a power outage.
- Phase: the load to be protected
- Single-phase power includes a single AC waveform, making single-phase equipment
ideal for lower power density applications with per-rack power consumption levels
up to approximately up to 5KVA.
- Three-phase power includes 3 AC waveforms, making 3-phase equipment better suited
for intermediate and high-capacity applications more than 10KVA with per-rack power
consumption levels that surpass the practical energy limits of single-phase equipment.
Three phase UPS are more compatible with a three phase DG set and these UPS systems
can also be used to feed single phase loads, and with good load balancing, the DG
does not need to be oversized.
- Topology:
- Inverter/Home UPS : For running fans, tube lights, computers and TVs. Meant
up to 2KVA
- Line interactive UPS: For running individual computers, small office, web and departmental
servers and/or harsh power environments, Meant up to 5KVA
- Online UPS: Zero switch over time. Ideal for sensitive equipment, protection to
mission critical equipment and servers at data centers
- Waveform output type:
- Square wave: Ideal for running fans and tube lights. Makes humming noise.
- Modified sine wave: No noise. Safer than square wave for running appliances.
- Pure sine wave: Same as mains power. Safe to run any appliance
For a total power protection solution Powerwale.com is the best place to buy UPS
systems in India. We specialise in providing reliable, high-quality power protection
ups to our commercial and residential clients. Our wide range of premium systems
and accessories includes products from some of the best manufacturers and suppliers
of uninterruptable power source solutions available. Whether you’re looking to buy
a power protection system for your office or for affordable backup power supply
for homes – you’ll find it on our website for a highly competitive price.
We stock All UPS includes
LivFast, Exide, Amaron, Microtek, APC, Sukam and it is best
place to buy UPS online in India. We have a huge selection of power management,
protection and back-up solutions that can help you avoid the costs associated with
power interruption to your home or business – including downtime, damage to equipment,
loss of data, and a failure to deliver on your promises to clients.
As well as having the best UPS online for sale, our extensive product range inlcudling
for 250 VA to 100 KVA. The manufacturers and suppliers we work with have been assessed
based on their High Quality standars to ensure we are only providing our customers
with products that have minimal environmental impact.
When you buy power backup systems with us, you’ll not only benefit from our competitive
prices – you’ll also receive personal, friendly and efficient customer service from
our knowledgeable staff. They are always happy to help you decide on a personal
or business solution that’s right for you.
For advice on whether to buy battery backup supply systems for your home or office,
give us a Call at
For Ordering 8748806666 and Product Enquiries, Pls call +91 8748806666, Email:
sales@powerwale.com
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Common Inverter & UPS systems Battery Faq's
How do I decide which inverter/home UPS I should buy?
While choosing the right inverter or UPS might seem a little complicated at first,
it really isn’t. To begin with, you just need to answer the following questions:
What are the different types of appliances you need to run? Are they sensitive to
electrical fluctuations? Such sensitive appliances may include your computer or
that expensive TV.
If yes, then it is highly recommended that you purchase a Sine wave inverter/home
UPS with minimal transfer time (explained below). If not, then normal appliances
such as regular fans or tube lights run just fine with regular inverter/home UPS
systems which are much cheaper than comparable sine wave ones.
My fan and tube lights make a loud, humming sound when the inverter is on. Is this
normal?
Yes, if you have bought a square wave inverter/UPS. A humming sound with such inverter/UPS
systems is normal.
There are frequent and long power cuts where I live. Is there anything I should
keep in mind while buying and inverter or a UPS?
Nothing in particular. All you need to be careful of is the type of equipment and
appliances you want to run. For sensitive ones, a Sine Wave UPS with a short transfer
time is recommended. If you wish to run only fans and tube lights, a square wave
inverter/home UPS will suffice. The backup time will depend on the capacity of the
battery.
Why isn’t my inverter/UPS able to run all the appliances I was told it would?
There could be two main reasons for this:
1. Your battery needs to be either charged or replaced. 2. You are trying to run
the wrong appliances:
However, for other electrical appliances such as an air conditioner, your existing
inverter or UPS might not be enough. This is because some of these appliances need
a lot of power to start (sometimes as much as 300% of their operational power).
In this case, even if your inverter/UPS is rated above the power rating of a heavy
appliance, it might not be able to run it, simply due to the high start-up power
required.
My fan is running at lower than normal speed and tube lights are dimmer than usual.
Why is this?
Your battery does not have enough charge to power your fans and lights. Please re-charge
and re-check the water level of your battery. If that doesn’t solve the problem,
change the battery (in case dimming is a persistent problem even after proper charging
and refilling the battery). Also, ensure that you are not overloading the inverter/UPS
as even this might cause some appliances to run below their actual capacity.
Are automotive batteries suitable for inverters/UPS systems?
No. Automotive batteries are only suitable for cars since they are used to provide
power for a short duration. Hooking up these batteries to an inverter or UPS might
damage the battery and the inverter/UPS in addition to voiding the warranty.
What is the difference between VA and Watts?
The power drawn by computing equipment is expressed in Watts or Volt-Amps (VA).
The power in Watts is the real power drawn by the equipment. Volt-Amps are called
the “apparent power�? and are the product of the voltage applied to the equipment
times the current drawn by the equipment. Both Watt and VA ratings have a use and
purpose. The Watt rating determines the actual power purchased from the utility
company and the heat loading generated by the equipment. The VA rating is used for
sizing wiring and circuit breakers. The VA and Watt ratings for some types of electrical
loads, like incandescent light bulbs, are identical. However, for computer equipment
the Watt and VA ratings can differ significantly, with the VA rating always being
equal to or larger than the Watt rating.
Can/should I add another UPS to my computer if I already have an inverter? ?
Yes, you can add a separate line interactive UPS for your desktop even if you already
have an inverter/home UPS. Your existing inverter/home UPS may take as much as 2-3
seconds to power on. This is enough to switch off your computer randomly. Not only
do you stand to lose important data, there is also a risk that the computer might
get damaged. A small line interactive UPS (about 600 VA) will allow you to continue
working without any problems whatsoever.
I want to run sensitive equipment such as a TV, AC and computer. What is more suitable
for my needs - a home UPS or an inverter?
A pure sine wave inverter/home UPS with a short transfer time is recommended for
sensitive equipment. Sensitive equipment requires a stable power source that only
such systems can provide during a power cut. Even in the absence of a power cut,
these systems can stabilize the fluctuations in electricity, thereby protecting
your equipment from damage.
What is a sine wave inverter/UPS? Why are these systems more expensive than the
rest?
The power supply that you get from the local electricity board looks something like
this: All your appliances are built according to this smooth, ‘sine wave’.
However, when the power goes off, a UPS or an Inverter, depending on its technology
can produce any of the following waves to give you back up power:
Square Wave:
This is the electricity output from an inverter/UPS that produces a square wave.
Clearly, this does not look like the actual smooth wave that comes from the mains.
This is one of the reasons why sensitive appliances are not recommended for square
wave inverters and UPS systems. Since these systems are cheaper, running basic appliances
such as fans and tube lights on these systems is not a problem. However, a square
wave can produce a humming sound from fans and tube lights. If this is not an issue,
a square wave inverter is perfect for those who want to run basic appliances such
as fans and lights.
Modified Sine Wave
These systems are somewhere in between a square wave inverter/UPS and a pure sine
wave one. Modified sine wave inverter and UPS systems produce an output that crudely
resembles a sine wave. In other words, the output is a lot better than square wave
systems. What this does is that it eliminates the humming sound associated with
square wave inverters/UPS systems. Even though the output is better than a square
wave inverter, running sensitive equipment such as computers is still not recommended.
Pure Sine wave
The output from a pure sine wave inverter /UPS looks exactly like that received
from the mains. These systems can be used to run anything from a computer to a television,
provided, of course, that the capacity is enough to run such appliances. Since there
is hardly any difference between power received from the mains and the power produced
by these systems, the cost is accordingly higher.
What is the transfer time? Why is it important?
Transfer time is simply the time taken by an inverter/home UPS to switch on when
electricity (from the mains supply) goes off. The transfer time can range from as
high as 500 milli seconds (ms) to as low as 10 ms. The lower the transfer time,
the better. With a short switch over time, appliances do not need to restart. However,
if transfer time is on the higher side, appliances will switch off when the mains
power goes off and then switch back on when the inverter/home UPS powers on.
If you have LED TVs, computers or any other sensitive equipment at your home or
office, the use of a sine wave inverter/home UPS with a short transfer time is highly
recommended. This is because the appliances do not switch off when the mains power
goes off and the risk of damage to the equipment is minimized.
What is the difference between an online and line interactive (computer) UPS?
Online UPS: These systems are usually employed in places such as banks, IT firms,
hospitals etc. where power outages cannot be tolerated. All of these places have
highly sensitive equipment and online UPS is the perfect tool for these places.
Not only does an online UPS provide clean power by stabilizing fluctuations, the
switch to back up power from a battery is instantaneous. What this means is that
every appliance running on an online UPS is protected from damage regardless of
a poor input source or lack of power.
Advantages
--Stabilizes voltage fluctuations --Instantaneous switchover to battery power in
case of a power cut --Ideal for places that keep sensitive equipment --Can be used
to run any and every appliance without a problem
Disadvantages
--Expensive --Bigger units require a large number of batteries and therefore a lot
of storage space.
Line Interactive or computer UPS: Like an online UPS, a line interactive UPS also
regulates voltage to certain extent. However, its switchover time to battery power
isn’t instantaneous and it is therefore not recommended for super sensitive equipment
such as servers and hospital equipment.
Advantages --Stabilizes voltage fluctuations to a certain extent --Cost effective
--Usually small in size. Can be stored or hidden anywhere.
Disadvantages
--The switchover time isn’t instantaneous as in the case of an online UPS --Usually
comes with an in-built battery that provides back up for only a short time.
