Grid Tie Solar Technology  

 Grid Tie Solar Technology By SMA

Why use a Grid Tie System
When a house with solar power is linked to the utility grid it is called a grid-tie system. A simple grid tie system allows the user to subsadise daytime use of electricity used in appliances like fridges, kettles and lights using solar power. All power generated by the solar system is either supplied into the house or back onto the distributed grid (in case of excess). Grid tie is a growing an common occurance in Europe and set to become a world wide norm. We at Take 2/ Technique offer the best technology currently available suppled by SMA Germany.

What does a grid tie system consist of
A basic Grid Tie system consists of a Grid Tie inverter called Sunny Boys from SMA these connect directly from solar panels onto the household AC system. This concept is called AC coupling and is different in that it does not need battaries. Without battaries the system is much cheaper and much more efficient


Why Use SMA Technology
SMA has developed a whole range of complementary product around their Grid-Tie systems. These include the options of adding SMA Sunny Island battery inverters into the system as either backup power or total offgrid capability. Other capabilities include wireless transmission of data to GSM networks or publishing history onto the web.

In addation the Sunny Family of products allow for endless expandability without the loss of your initial investment. For example going from single phase to 3 phase; adding more power capability; or moving to a hybrid generator system just means adding more equipment in parallel with no replacement of sytems.
SMA Grid Tie inverters are installed into the largest Grid Tie systems in the world some of several Mega Watts in capacity.


  Input data SB1700
Max. DC power (PDC, max) 1850 W
Max. DC voltage (UDC, max) 400 V
PV voltage range, MPPT (UMPP) 139 V - 400 V
Max. input current (IPV, max) 12.6 A
DC voltage ripple (UPP) < 10 %
Max. no. of strings (parallel) 2
DC isolator plug connector, ESS
Thermally monitored varistors yes
Ground fault monitoring yes
Reverse polarity protection short-circuit diode
Output data  
Max. AC power (PAC, max) 1700 W
Nominal AC output (PAC, nom) 1550 W
Harmonic distortion of grid current < 4 %
Nominal AC voltage (UAC, nom) 220 V - 240 V
Nominal AC frequency (fAC, nom) 50 Hz / 60 Hz
Power factor (cos ?) 1
Short-circuit proof yes, current regulation
Mains connection AC plug connector
Efficiency  
Max. efficiency 93.5 %
Euro-ETA 91.8 %
Protection degree in accordance with DIN EN 60529 IP65
Mechanical data  
Width/height/depth (mm) 434 / 295 / 214
Weight 25 kg

 
  Input data SB3800
Max. DC power (PDC, max) 4040 W
Max. DC voltage (UDC, max) 500 V
PV voltage range, MPPT (UMPP) 200 V – 500 V
Max. input current (IPV, max) 20 A
DC voltage ripple (UPP) < 10 %
Max. no. of strings (parallel) 3
DC isolator plug connector, ESS
Thermally monitored varistors yes
Ground fault monitoring yes
Reverse polarity protection short-circuit diode
Output data  
Max. AC power (PAC, max) 3800 W
Nominal AC output (PAC, nom) 3800 W
Harmonic distortion of grid current < 4 %
Nominal AC voltage (UAC, nom) 220 V - 240 V
Nominal AC frequency (fAC, nom) 50 Hz / 60 Hz
Power factor (cos ?) 1
Short-circuit proof yes, current regulation
Mains connection AC plug connector
Efficiency  
Max. efficiency 95.6 %
Euro-ETA 94.7 %
Protection degree in accordance with DIN EN 60529 IP65
Mechanical data  
Width/height/depth (mm) 450 / 352 / 236
Weight 41 kg