Saves Electricity and increases life ideas

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சோலார் பேனல் நிறுவ அரசு வழங்கும் உதவிகள் மானியங்கள் 

 NABARD BANK Solar Panel Schemes and Home Light Loan Details

 MNRE வழங்கும் நேரடி மானியம் பற்றிய தகவல்கள்




மின்சக்தியை சேமிக்கும் உபகரணங்கள் 

Water Level Controller

Model TM112-10A This is a very useful device to automatically switch ON and OFF any electrical appliance or lights etc. at preset times.  Two ON times and two OFF time settings are possible on daily 24 hour clock time basis. Simply connect the appliance or lights to be controlled in the electrical Mains socket of device. Program the timer as required . The system will automatically start switching the appliance ON and OFF  at set times. Built in 6 digit LED clock with internal battery backup. Clock can be set in 12 Hour or 24 hour time mode. The device is very compact , elegantly designed and can be easily installed .  Saves Electricity and increases life of appliances by running them only for exact required periods only.  Ideal For :  Automatically operating electrical appliances , lights or alarms etc. at preset times. Very use full for controlling water lifting pumps , Outdoor lights control , Neon lights control ,  various process controls in production  and many other such timer applications . Also recommended for appliances or light etc. installed at remote locations which requires manpower and transportation expenses to switch them ON and OFF daily or on regular intervals i.e. road side signboard lighting , sirens , pump sets , street lights etc.

Other Timers Switches Available 99 Hours Programmable Continuous Timers for separate ON time & OFF time settings Model TM99H Combination Timer of Daily Timer with 99 Minutes programmable timer .Model TM710 Telephone Timers / Line Disconnections 4 digit 99 Minute Programmable Down Count clock Sober days counter (3 digit ) Sports Down-count Timers clocks for showing game time & interval time

SPECIFICATIONS : 
Power Source : 220 volts AC , 5 watts .

Clock : 4 digit clock in 1/2 inches high RED LED digits , 12Hour or 24 hour Mode , internal battery (CR2032) backup for keeping time ,

Clock accuracy : appx 2 minutes per month or better .

Cabinet Dimensions: 10 inches x 3 inches x 2.5 inches , ABS Molded cabinet , Wall Mounting provision.

Following Models are available for different load applications:

Automatic Daily Timers Prices:
Model TM-112-10A Two ON Times & Two OFF Times	Relay rating :10 Amp   , Max recommended load at 220V AC :  1500 watts Provided with 15Amp 220V AC Mains socket for connecting appliances .	Price : Rs. 2,600/- all inclusive of taxes & shipping within India .	International Price : USD 105 all inclusive of shipping through EMS Post parcel  .
Model TM-509-25A	Relay rating : 25 Amp   , Max recommended load at 220V AC :  5000 watts Provided with Terminals for connecting load	Price : Rs. 3,500/- all inclusive of taxes & shipping within India .	International Price : USD125 all inclusive of shipping through Post parcel  .
Other Timers
99 Hours Programmable Continuous Timers with programmable ON time & OFF time settings It can be set for any time between 1 second to 99 Hours 59 minutes 59 seconds ) Click below links to download product catalogues TM99H-10A    ( This is New Updated version of  old model TM909 -10A) TM710
Model TM-99H-10A	Relay rating : 10 Amp   , Max  load at 220V AC :  1500 watts Provided with 16A 250V Power socket /switch for connecting load .	Price : Rs. 2,600/- all inclusive of taxes & shipping within India .	International Price : USD 105 all inclusive of shipping through Post parcel  .
Model TM-99H -25A	Relay rating : 25 Amp   , Max  load at 220V AC :  5000 watts Provided with Terminals for connecting load	Price : Rs. 3,500/- all inclusive of taxes & shipping within India .	International Price : USD125 all inclusive of shipping through Post parcel  .
Model TM-710-10ACombination of Daily timer with 99 minutes ON/OFF timer	Relay rating : 10 Amp   , Max recommended load at 220V AC :  1500 watts	Price : Rs. 4000/- all inclusive of taxes & shipping within India .	International Price : USD135 all inclusive of shipping through Post parcel  .
We accept international payments through PAYPAL or TT . Above products are also available at same prices for 110V AC power supplies.

 Custom made solutions for different applications are also offered wherever possible.
Query : For any further queries or business correspondence pl mail to  cosycom@gmail.com

Prices shown are all inclusive of taxes applicable, packing and courier charges within India or by EMS Speed Post in other countries wherever facility is available. Export price including international shipping through EMS or Air mail parcel is indicated in USD . International customers can pay through PAYPAL ( Paypal fee  @4%  will be charged extra) . Please send payments by D.D. in favour of COSY COMMUNICATIONS payable at Dehradun. No outstation cheques or D.D. are accepted. Payments can also be deposited in cash or by cheque in selected cities India in favour of our current accounts with IDBI Bank or ICICI bank. For details regarding payment options please அழைக்கவும். Validity : All above prices are valid up to 31st ஜீன் 2012 only . Warranty :   One Year free service warranty against any manufacturing defect. (Defective items should be sent with return postage prepaid) along with copy of purchase to our Dehradun Works . We assure a quick and satisfactory after sale service to our all customers. Pl. note : No warranty is offered to our overseas customers due to involvement of customs in both countries and high shipping costs . However pl. order with complete confidence , we spare no efforts in manufacturing and shipping to provide a high quality product to our customers . Delivery : In case an order is placed on us we usually dispatch goods within 7 days from our works by suitable courier service or registered post parcel. Rarely there might be change in delivery time due to any circumstances and we shall not be responsible for any consequences. Customers are also advised to suggest their preferred courier or transport service.   Click here to submit a on line query. We normally try to respond  within 6 hours on all working days .   For any further queries or business correspondence pl mail to  cosycom@gmail.com     ( All offers , shown design, specifications and prices subject to change without any notice and prevailing prices at the time of orders will be applicable.)

Manufactured By : COSY COMMUNICATIONS 1 , Indraprastha , Sewla, Majra, Dehradun (INDIA) Tele : 91-135-2640816 Email :  cosycom@gmail.com

இப்படிக்கு,
யுவராஜ்

13.04.2014.

DC to AC inverter

How to Choose the Right DC to AC 240V Power Inverter

What Is a Power Inverter

First of all, let's start with the definition. What is a power inverter?
A power inverter is a device which converts battery power into the mains power, i.e. it transforms 12V direct current (DC) into 240V alternating current (AC).
240V AC is the power supplied to our houses by utility companies, and this is the power required by most normal household appliances such as lights, TV, fridge etc.
There are 2 main types of inverters:
- Off-grid, which work as a standalone system and require batteries (typically used in caravans, cars, boats or locations without access to mains power)
- On-grid or grid tie inverters, which require mains power to work (typically used in household solar systems and take input directly from solar panels)
In this article we are going focus on off-grid inverters only - i.e. inverters which can be used to build an off-grid 240V solar system.

Which 240v Power Inverter to Choose

So what off-grid inverter should you choose for your battery / battery bank in a caravan, motorhome, boat or for a standalone off-grid solar system?
In order to answer this question, you will need to consider three key points:

• Type of inverter: Modified sine wave / Pure sine wave
• Power rating (wattage) of the inverter
• Input voltage (specifically in the case of a standalone solar system)

Type of Inverter - Modified Sine Wave vs. Pure Sine Wave Inverters

Deciding on the type of power inverter you require depends on the type of power output you need. Pure sine wave inverters provide an output which harmonically follows a sine wave. This is similar to the utility-supplied grid power. These inverters switch polarity ("+" and "-") between power cables smoothly, gradually reducing or increasing the voltage as required (in case you were wondering why inverters have to switch polarity: this is the essence of alternating current, polarity changes happen approximately 50-60 times per second).
In contrast, modified sine wave is a simulation of the pure sine wave output when the inverter sharply drops or increases voltage to switch polarity. As a result, the output form closely matches pure sine wave but still has much greater distortions.
As you can see from this example, though the modified and pure sine wave produce the same levels of output, the pure sine wave inverter produces a much smoother and less erratic output.

Ok, this seems more like science, but what impact will your choice of inverter have in practice?

1. Modified Sine Wave output is not suitable for certain appliances, particularly those with capacitive and electromagnetic devices such as: a fridge, microwave oven and most kinds of motors. This also covers some types of printers as well as capacitive fluorescent lights etc
2. Typically modified sine wave inverters work at lower efficiency than pure sine wave inverters
3. Modified sine wave inverters are normally significantly cheaper than pure sine wave inverters

To sum up, even though modified sine wave inverters can work well with many appliances including light bulbs, mobile phone chargers and office equipment, if your budget allows it, we would always recommend buying a pure sine wave inverter.

Determining the Power Rating of Your Inverter

If you need to power small appliances like a mobile phone charger or energy efficient light bulbs, you don't really need to buy a 2000W power inverter because it will consume significantly more power even in standby mode and work very inefficiently with small appliances. On the other hand, if you connect a coffee machine to a 150W inverter you will quickly blow a fuse (if not the inverter itself).
Therefore the power rating of the inverter should be chosen based on the power consumption of your load. The following table contains the typical power consumption of some standard household appliances and the recommended inverter rating.

Equipment	Power consumption	Continuous power rating of inverter
		150W	300W	600W	1000W	1500W	2000W	3000W	4000W
---  Audio and video appliances ---
12'' colour LCD TV	20W	Ok	Ok	Ok	Ok	Ok	Ok	Ok	Ok
Satellite TV receiver	30W	Ok	Ok	Ok	Ok	Ok	Ok	Ok	Ok
HiFi stereo with CD changer	50W	Ok	Ok	Ok	Ok	Ok	Ok	Ok	Ok
20'' colour LCD TV	100W	Ok	Ok	Ok	Ok	Ok	Ok	Ok	Ok
42'' colour LCD TV	200W	-	Ok	Ok	Ok	Ok	Ok	Ok	Ok
Stereo amplifier	250W	-	Ok	Ok	Ok	Ok	Ok	Ok	Ok
Home theatre system	500W	-	-	Ok	Ok	Ok	Ok	Ok	Ok
		Continuous power rating of inverter
--- Home and kitchen appliances ---		150W	300W	600W	1000W	1500W	2000W	3000W	4000W
Table fan	50W	Ok	Ok	Ok	Ok	Ok	Ok	Ok	Ok
Sewing machine*	100W	-	Ok	Ok	Ok	Ok	Ok	Ok	Ok
Halogen light*	100W	-	Ok	Ok	Ok	Ok	Ok	Ok	Ok
Pedestal fan*	100W	-	Ok	Ok	Ok	Ok	Ok	Ok	Ok
Blender*	350W	-	-	-	Ok	Ok	Ok	Ok	Ok
Small fridge*	200W	-	-	Ok	Ok	Ok	Ok	Ok	Ok
Large fridge*	500W	-	-	-	-	Ok	Ok	Ok	Ok
Washing machine* (no heating)	700W	-	-	-	-	-	Ok	Ok	Ok
Microwave oven	900W	-	-	-	Ok	Ok	Ok	Ok	Ok
Coffee maker*	1200W	-	-	-	-	-	Ok	Ok	Ok
Iron	1200W	-	-	-	-	Ok	Ok	Ok	Ok
Hair dryer*	1200W	-	-	-	-	-	Ok	Ok	Ok
Toaster	1200W	-	-	-	-	Ok	Ok	Ok	Ok
Vacuum cleaner*	1500W	-	-	-	-	-	Ok	Ok	Ok
Dishwasher (hot dry)	1500W	-	-	-	-	-	Ok	Ok	Ok
Hob	1500W	-	-	-	-	-	Ok	Ok	Ok
Washing machine* (with heating)	2000W	-	-	-	-	-	-	Ok	Ok
Air conditioner*	3000W	-	-	-	-	-	-	Ok	Ok
Electric oven	5000W	-	-	-	-	-	-	-	-
		Continuous power rating of inverter
--- Computers and home office ---		150W	300W	600W	1000W	1500W	2000W	3000W	4000W
Mobile phone charger	5W	Ok	Ok	Ok	Ok	Ok	Ok	Ok	Ok
Inkjet printer	40W	Ok	Ok	Ok	Ok	Ok	Ok	Ok	Ok
Laptop	50W	Ok	Ok	Ok	Ok	Ok	Ok	Ok	Ok
Fax machine	50W	Ok	Ok	Ok	Ok	Ok	Ok	Ok	Ok
Desk lamp	50W	Ok	Ok	Ok	Ok	Ok	Ok	Ok	Ok
Desktop computer with 17'' monitor	400W	-	-	Ok	Ok	Ok	Ok	Ok	Ok
Large laser printer*	800W	-	-	-	-	Ok	Ok	Ok	Ok
		Continuous power rating of inverter
--- Power tools and other equipment ---		150W	300W	600W	1000W	1500W	2000W	3000W	4000W
Drill*	800W	-	-	-	-	-	Ok	Ok	Ok
Electric chainsaw*	1000W	-	-	-	-	-	Ok	Ok	Ok
Electric lawn mover*	1000W	-	-	-	-	-	-	Ok	Ok
Pressure washer*	1000W	-	-	-	-	-	-	Ok	Ok
Gridner*	2000W	-	-	-	-	-	Ok	Ok	Ok
Air compressor*	2000W	-	-	-	-	-	-	Ok	Ok

*Appliances marked with a star are likely to have their starting power consumption several times greater than their normal working power (typically this is caused by electric motors or capacitors in such appliances). This should be taken into account when choosing the right size of inverter. For example, even though electric lawn mowers have normal working power 1000W, their starting power is higher than 4000W, so inverters with continuous power 2000W are not suitable because their peak power is limited by 4000W. Always take into account starting power requirements of your equipment, especially devices with electric motors, when choosing the right inverter.
Please also note: this table is provided for general guidance only. The actual power consumption of your appliances, as well as starting power requirements, may vary considerably. In all cases you need to check specifications of your equipment for continuous and starting power requirements.
If more than one device is connected to the inverter, the total power consumption should be a sum of all appliances used. This will determine the total inverter power required.

Determining the Input Voltage of Your Inverter: 12V or 24V

IIf you are looking for an inverter for your 12V leisure battery in a motorhome, caravan or boat, there's not much choice in terms of the input voltage - you will need a 12V to 240V inverter, because your battery is 12V.
However, if you are building a standalone off-grid solar system (e.g. in a house, garden, shed or farm), then you can choose the voltage of your battery bank and the input voltage of an inverter accordingly.
Instead of a 12V battery bank you may choose to build a 24V battery bank (2x12V batteries wired in series will produce 24V). In this case you can use a 24V DC to 240V AC inverter, rather than 12V DC to 240V AC. This set up will give you some important benefits:
- The input current for the inverter will be 2 times smaller for the 24V than the 12V making the inverter and the entire system safer and more reliable
- Cables between your battery and the inverter do not have to be as thick as those used for a 12V battery bank and inverter.
This is particularly important for large standalone solar systems with 2000W inverters and for such power levels our recommendation is to opt for a 24V battery bank and an inverter with 24V input voltage.

TYPE of SOLAR PANEL Connect

Which Is Best For You – Grid-Tied Solar Or Off-Grid Solar Energy?

Written by: Adam C Alternative Energy September 23, 2013

Solar panel systems are not all created alike. Just because homes have a set of solar panels on the roof, it doesn’t mean that they all are operating similar systems by any stretch of the imagination.
Primarily, there are two types of solar installations on residential homes – grid-tied solar, and off-grid solar, and we’ll look at both types in this article.
First of all, however, it’s important to note that regardless of how your solar-powered system is configured, solar power is still a fantastic choice for alternative energy needs. For as long as the planet has existed, reliably and without fail, that hot yellow ball of gas has risen every morning on the horizon packing enough energy to meet our power needs consistently. The sun is a remarkable, free, silent and clean form of energy, and it’s just within the last 20 or so years that solar panels, inverters and batteries have evolved from an efficiency standpoint to the point where we can now create homes that are entirely powered by the sun.
While the solar panels themselves work identically in a grid-tied and off-grid system, the method of both storing the solar power and integrating that power into the home’s electrical system have some marked differences between the two, so much so that their paths diverge substantially. It’s not so much the panels themselves that we’ll be looking at; rather, it is what happens when the electricity leaves those panels and heads for your home that we’re examining.
GRID-TIE SYSTEMS
If you take a drive down your average suburban street and spot a home with solar panels on the roof, you can almost be certain the system is a grid-tied system, which is by far the most common solar-powered system in use today. As the name implies, the system is tied to the grid – what grid, you ask? The electrical power generation and distribution grid – essentially, all it means is that the home is connected to the power grid that feeds it, which isn’t earth-shattering until you understand the implications thereof. Here’s how it works:

• The home is already connected to the power grid regardless of solar panels. What most people don’t realize is that this connection is a two way street – power doesn’t just flow from the grid into the home; it can also flow from the home back into the grid.
• Solar panels on a grid tie-in system generate electricity when the sun is shining, and this electricity is routed to the home’s primary electrical distribution panel. If the home produces more electricity than it uses, the excess electricity is funneled back into the grid.
• If the home frequently produces more power via solar panels than it uses, the homeowner will realize a credit on his or her power bill representing a payment from the power company for the electricity that the home produced.

Harness the power of the sun when the power goes out…
Grid ties have one fatal flaw however; one Achilles heel that most people don’t know about: Your grid-tied solar panel system will not be able to power your home during a power failure. This is because the power company will put a lockout box on the output of the solar panels such that if the power is off, the box will disconnect the solar panels from the home’s electrical panel to prevent a back-feed situation. As we discussed earlier, electricity flows both ways, and the power company is concerned that the output of your home’s solar panel system could inadvertently shock a power worker halfway down the block who is working on the power lines and assumes they are inactive.
OFF-GRID SYSTEMS
Off-grid systems take solar panel technology to a new level. Essentially, they use the same solar panels as grid-tied systems, except they actually store the power they make, usually in batteries. This is an important distinction; the off-grid solar power user isn’t interested in generating power for some faraway utility; he or she is interested in keeping the power that is produced. The way the power is retained is by storing the output of the solar panels in an appropriately sized battery bank, and this provides another benefit most people don’t realize: You can use the solar power you generated during the day – at night. As the solar-powered system soaks in the sun’s rays during the day, it funnels this electricity into a purpose built battery bank which then can be drawn from at night or on overcast days, meaning that the off-grid system will be able to bank or save its output, whereas the grid-tied system will be running at a reduced capacity, or perhaps not at all.
PROS AND CONS
To sum it up, both systems have some plusses and minuses:
Grid Tie:
Pro:

• Initially less expensive to install on a home.
• Hundreds of thousands of examples of this system in use.
• Could result in a credit on your power bill.

Con:

• If there is a power failure, you have no electricity.
• Doesn’t generate solar power at night or on overcast days, so you’re back to using the grid.

Off Grid:
Pro:

• Stores solar energy in batteries for use at night and on overcast days.
• Independent power system not subject to the whims of the power utility.
• Works even if the power grid is down.

Con:

• Initial cost of the system is higher due to batteries and associated gear.
• Is not very common in a suburban setting – more common in remote homes.

Be sure to look into both systems, as each one has its own merits.

 By 
28.04.2014