grid tie inverter for solar panels

Grid-Tie 300W Pure Sine Wave Inverter DC10.5V~28V AC 180-260V

 45Hz-53Hz for Solar Input Power

If you are into solar energy to reduce your dependancy on City Power, then the Grid Tie inverter is the greatest invention since sliced bread.

We are selling one of these units that have been in operation for a few months and which is now surplus to our needs as we have upgraded to a larger capacity.

We are still using another six of them in parrallel to convert our solar energy into useful mains energy to run fridges, freezers, DSTV, vacuum cleaners, kettles ,washing machines and all the house hold appliances.

We have 6 of these in full time operation linked together and have converterd more than 7200kwH of energy to electricity over the past two years.

As these units have no moving parts, their lifetime expectation is similar to that of solar panels.(25 years)

A grid tie inverter manages the energy from the solar panels and converts it very efficiently to mains power in exact phase with the City Power. It needs no batteries and has efficiencies as high as 95%.

It is very safe and will cutoff all power generation within a few milliseconds of the City Power supply failing.

It is about the only device on the market that can keep solar panels working at optimum efficiency throughout the day, taking all the availalble sun power and turning it into useful energy.

Different manufacturers of solar panels produce panels that different performance specifications. The Gridtie inverter has features to continously monitor the current andf voltage being delivered and adjust the parameters. Their is a trend now overseas to see micro grid tie inverters built into the back of solar panels on the roof and to deliver optimised mains power delivery.

On solar arrays that have a single generation point, whenever a part of the array falls into shade then the entire system is compromised. With micro gridtie inverters, shade only affects a minor part of the array and all the rest of the array keeps delivering power at full capacity.

To use these gridtie inverters, connect the solar panels to the inverter, and plug the inverter into a mains plug just like you would plug in any appliance like a kettle. There is no need for special wiring or connection to your mains supply.

Specifications:
Output Type:     Single
Output Power : 201 - 300W
Input Voltage:   10.5V~28V DC (Note this is for 12 volt sysytems - that is VOC on solar panels must be less than 28 volts)
Output Current: Pure Sine Wave
Output Voltage: 180V~260VAC
Output Frequency: 45Hz~53Hz
Weight:     1.3KG
Features

• Directly connected to the solar panels (do not need to connect the battery)

Using precise MPPT function, APL functions, the inverter automatically adjust the solar panels of maximum output power,simply connect the solar panel to the grid inverters. Do not need to connect the battery.AC 0 angle with high precision auto-detection

• AC phase angle of 0 through isolation amplifier then input to the MCU for high-precision detection and analysis.

The phase shift rate is less than 1%, thus achieve high-precision with phase modulation AC output together.

• Synchronous High-frequency Modulation
• Pure Sine Wave Output
• Power Automatically Locked (APL)

The MPPT function adjusts to the maximum power point, the product automatically locks in maximum power point, then make the output power more stable.

• *Maximum Power Point Tracking (MPPT)

Because the solar current intensity and the voltage changes at any time this product uses high-precision MPPT power operation to automatically and immediately adjust the solar panels output power at the maximum output point and achieve a stable output purposes.

• Automatically Adapt To Different Load Power Factor
   
• Automatically Shut Down When The Power Output Of a Fault
  When the city power system is in failure, the inverter will automatically turn off the output.
• Current Limit Protection
   
• Stack Multiple Machines
  
      Paramaters:
• Grid-series models        300W
• Recommend use solar panels    420Wp 
• DC Maximum Input Power   400W 
• DC maximum voltage     VpvDC 30.2VDC
• DC voltage range     Vpv 10.5V~28VDC
• Maximum output power factor     99%
• Maximum input current      20A
• AC output power       300W 
• AC maximum output power     300W  
• Anti-voltage protection     Fuse
• AC standard voltage range     180~260VAC
• AC frequency range    45Hz-53Hz
• Output current totalharmonic distortion     THDIAC <5%
• Phase     <1%
• Islanding protection     VAC
• Output short circuit protection      Current-limiting
• Display     LED (green/red)
• Installation     Wall hanging
• Cooling     Fan
• Standby Power     <2W
• Night Power     <1W
• Ambient temperature range     -25 °c~60°c
• Humidity     0~99%(Indoor Type Design)
• Waterproof     Indoor Type Design
• Electromagnetic Compatibility     EN50081.part1   EN50082.part1
• Power System Disturbance     EN61000-3-2  EN60950-1

Graph showing power converted from solar panels by an array of grid tie inverters. Location Johannesburg - mid winter

We also offer advice to buyers wanting to set up a solar network.

You can find more info on the use of this device at http://rapidttp.co.za/gridtie.html

South African buyers only