Sv Technologies SV Technologies is a Manufacturer and Dealers for UPS, Inverters, Solar Products, Stabilizers, Generators, APC, Emerson, Eaton, Spcpmec, Sukam, Luminious, Microteck, SMF Batteries, Exide, Quanta, Rocket
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SV Technologies is a Manufacturer and Dealers for UPS, Inverters, Solar Products, Stabilizers, Generators, APC, Emerson, Eaton, Spcpmec, Sukam, Luminious, Microteck, SMF Batteries, Exide, Quanta, Rocket

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A solar inverter, or converter or PV inverter, converts the variable direct current (DC) output of a photovoltaic (PV) solar panel into a utility frequency alternating current (AC) that can be fed into a commercial electrical grid or used by a local, off-grid electrical network. It is a critical balance of system (BOS)–component in a photovoltaic system, allowing the use of ordinary AC-powered equipment. Solar power inverters have special functions adapted for use with photovoltaic arrays, including maximum power point tracking and anti-islanding protection.

1 Classification
2 Maximum power point tracking
3 Solar micro-inverters
4 Grid tied solar inverters
5 Solar charge controller
6 Solar pumping inverters


Simplified schematics of a grid-connected residential photovoltaic power system[1]
Solar inverters may be classified into three broad types
Stand-alone inverters, used in isolated systems where the inverter draws its DC energy from batteries charged by photovoltaic arrays. Many stand-alone inverters also incorporate integral battery chargers to replenish the battery from an AC source, when available. Normally these do not interface in any way with the utility grid, and as such, are not required to have anti-islanding protection.
Grid-tie inverters, which match phase with a utility-supplied sine wave. Grid-tie inverters are designed to shut down automatically upon loss of utility supply, for safety reasons. They do not provide backup power during utility outages.
Battery backup inverters, are special inverters which are designed to draw energy from a battery, manage the battery charge via an onboard charger, and export excess energy to the utility grid. These inverters are capable of supplying AC energy to selected loads during a utility outage, and are required to have anti-islanding protection.

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   Over a month ago

Inverter for use at home has become a necessity than a luxury with frequent power cuts across India. The sales of popular brands like APC, Luminous, Sukam, Microtek, Amaron, , with good reviews have been zooming even though the prices have been rising. People now want to run all home appliances including air conditioners, televisions and refrigerators for their convenience.
Both provide backup when there is a power outage. In case of UPS the switch is instantaneous whereas in case of inverters there is a lag in switch.
Hence in case of critical applications like computers a UPS is needed.
For household appliances like fan, light, cooler etc. the gap is fine and hence an inverter works well.
An inverter is typically cheaper than a UPS.


The typical usage of power appliances which you can use for approximate calculations is as in the table below ( do check the actual appliances wattage for caculating wattage):


Power (in Watts)

Starting (in Watts)

Fan 100 200
Tubelight 50 100
TV 120 240
Laptop 75 100
Washing machine - with heater 1200 2400
Washing machine - without heater 2000 3200
Air Conditioner (1.5T) 2200 4000
Air Cooler 1000 2000
Refrigerator (150W) 150 300

The size of inverter is measured in watts (W). The amount of wattage needed depends on the appliances that need to run.
Many appliances have the wattage rated on the product. Wattage rating can also be calculated as:

Volts x Amps = Watts

The sum of wattage of all appliance should be within the specifications of the inverter. e.g. if you are planning a 2 outlet inverter then take the sum of wattage and add another 50% to account for any surges in power draw. For example if your tubelight draws 50W and fan draws 50W you should go for at least a 150W ( 50W+50W+50% of (50W+50W) ) inverter.
Make sure the power of the inverter is listed as "continuous". They should not draw the wattage for a short period of time and then will shut off, reset themselves and resume functioning. Such outages can be frustrating and harmful to the appliances.
There are certain appliances that need a start-up wattage which is higher than the normal running wattage e.g. a washing machine that runs at 500W might need 1000W to start. So the inverter rating should have considered 1000W instead of 500W as otherwise the washing machine will not start

Power inverters produce one of two different types of wave output:
Modified Sine Wave
True Sine Wave
Modified Sine Wave

Modified sine wave inverter are most popular and cheaper. They are efficient enough to run most hone appliances properly. They are also smaller than other types of inverters.
True Sine Wave

True sine wave inverters are the most expensive. They deliver the most consistent, highest quality wave output.
These can have high surge capacity which indicates that they can exceed the rated wattage for limited time which is helpful in starting appliances.
Some equipment requires a true sine wave like laptops, battery chargers and so on. AC appliances will run on a true sine wave inverter.


   Over a month ago