Invertoare cu conectare la retea - DC/AC

 

Pentru comercializarea energiei electrice produse de sistemele solare, eoliene si hidro sunt utilizate invertoarele cu conectare la retea. Acestea permit conversia curentului continu DC in curent alternativ AC asigurand calitatea frecventei la 50Hz. Aceste invertoare sunt destinate exclusiv injectiei in reteaua nationala si dispun de intrate in tehnologie MPPT.

   

1. Invertoare STECA seria 300/500 &  2000+

  

   

Facilitatile produsului

Seria MiniString este compusa din invertoarele  StecaGrid 300 si StecaGrid 500, cu o putere nominala de 300W si 500W, construite intr-o maniera modulara si simpla pentru a fi instalat. Avand posibilitatea distributiei pe cele trei faze sistemul poate fi extins la dorinta utilizatorului. Sistemul dispune de tehnologia MPPT si are o eficienta de pana la 95,8%.
  
  

StecaGrid Control monitorizeaza un sistem cu o iesire maxima de 3600W. In Germania, Austria si Franta de exemplu, datorita standardelor aplicate, utilizarea modului StecaGrid Control D1 avand integrata functia de grid-monitoring (monitorizare retea) MSD si intrerupatorul de retea pentru curent rezidual, este obligatorie. In alte tari ca Olanda, este utilizat numai modulul StecaGrid Control N.
  

Afisajul  StecaGrid Control ofera atat informatia referitoare la energia produsa cat si starea sistemului.


   

   
Input

 
Cod Produs LPI00281 LPI00282    sau    LPI00283
Model StecaGrid 300-M StecaGrid 500-M sau 500-T
Input voltage range 45 – 135 V DC 45 – 230 V DC
MPPT range 45 – 100 V DC 75 – 170 V DC
Maximum recommended PV power 375 Wp 625 Wp
Maximum input rating 3 0 W (1) 530 W (1)
Maximum input current 5 A (1) 5 A (1)
DC connectors Multi-Contact MC 3 (Solarline 1), Multi-Contact MC 3 (Solarline 1),
MC 4 (Solarline ) or Tyco Solarlok MC 4 (Solarline ) or Tyco Solarlok
Output

 
Nominal output rating 300 W 500 W
Nominal output voltage / frequency 30 V / 50 Hz 30 V / 50 Hz
Maximum efficiency 94,80% 95.8 %
European efficiency 93,40% 94.5 %
Power factor > 0.95 > 0.95
Harmonic distortion < 6 % (at maximum power) < 5 % (at maximum power)
AC connectors Wieland Electric GST 18i3V Wieland Electric GST 18i3V
General  
Galvanic separation none none
Internal power supply supplied by solar panel supplied by solar panel
(no Stand-by power) (no Stand-by power)
Start-up/switching off Automatic start / stop Automatic start / stop
Start current Starts up at > W, 45 V Starts up at > W, 45 V
input voltage input voltage
AC monitor Voltage ( 30 V +/-10%) ( ) Voltage ( 30 V +/-10%) ( )
Frequency (50 Hz +/- Hz) ( ) Frequency (50 Hz +/- Hz) ( )
Anti-islanding protection Voltage and frequency window Voltage and frequency window
monitoring; ENS optional with monitoring; ENS optional with
StecaGrid Control D resp. D1 StecaGrid Control D resp. D1
Dimensions (h x d x w) 4 x 186 x 71 mm 4 x 186 x 71 mm
Weight 1.4 kg 1.4 kg
( ) Other limit presets are possible  
Environmental conditions  
Temperature - 0 °C to 45 °C - 0 °C to 45 °C
Installation Indoors (protection class IP 0) Indoors (protection class IP 0)
Installation and connection  
Installation of a single inverter Three fixing screws 
Installation of two and more inverters DIN rail 
Interconnection AC side AC connector (Wieland Electric GST 18i3V 1P1) (3)
Interconnection data Steca data connector (3)  
(3) Both connectors are supplied with the inverter. 

   

Multumita sistemului modular, acest invertor permite injectia in retea incepand cu valori foarte mici, ocupand un spatiu fizic foarte mic. Aceste invertoare au fost fabricate pentru a utiliza energia solara intru-un mod cat mai simplu. 

   
   

Invertoarele Steca din seria 2000+ au fost dezvoltate pentru a acoperii puteri de pana la 10KW.

   

StecaGrid 2000+ D Master StecaGrid 2000+ Master StecaGrid 2000+ Slave
DC input side (PV-generator)  
Maximum start voltage 410 V 
Maximum input voltage 450 V (higher voltages can damage the device) 
Minimum input voltage 80 V 
Minimum input voltage for rated output 132 V 
MPP voltage 80 V … 400 V 
Maximum input current 2 x 8 A [current limited by inverter] or 1 x 16 A [parallel inputs] 
Maximum input power 1,075 W [per input] or 2,150 W [2 parallel inputs] 
Maximum recommended PV power 2,400 Wp 
Derating / limiting automatic when - input power is higher (> 1.075 kW / input) 
- input currents > 2 x 8 A or 1 x 16 A (parallel inputs)) 
(higher currents are limited by the equipment and therefore will not damage the inverter) 
AC output side (Grid connection) 
Grid voltage 190 V ... 265 V [depending on regional settings] 
Rated grid voltage 230 V
Maximum output current 10 A
Maximum output power 2,000 W 
Rated power 2,000 W 
Rated frequency 50 Hz 
Frequency 47.5 Hz ... 52 Hz [depending on regional settings] 
Night-time power loss 1.3 W 1.0 W 0 W
Feeding phases single-phase 
Power factor > 0.95 
Distortion factor < 5 % (max. power)
Characterisation of the operating performance  
Maximum efficiency 95% 
European efficiency 93.3 % 93.5 %  
MPP efficiency > 99% 
Power derating at full power from 40 °C (Tamb) 
Switch-on power 20 W 
Standby power 3 W 
Safety  
Isolation principle HF-transformer with galvanic separation and amplified isolation 
Grid monitoring MSD, compliant with see table of countries via master
DIN VDE 0126-1-1
Operating conditions 
Area of application indoor rooms with or without air conditioning, outdoors with or without protection 
Ambient temperature -25 °C ... +60 °C
Relative humidity 0 % ... 95 % 
Noise emission < 32 dBA 
Fitting and construction      
Degree of protection IP 65 
DC Input side connection MultiContact MC 4 (Solarline 2) 
AC output side connection WAGO 2.5 mm2 ... 6 mm² via master  
Dimensions (X x Y x Z) 351 x 542 x 140* mm 226 x 535 x 140* mm  
Weight approx. 11 kg approx. 9 kg  
Communication interface optional StecaGrid Connect with Ethernet interface 
DC circuit breaker no 
Cooling principle natural convection
Test certificate certificate of compliance, CE mark 

      

      
    

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2. Invertoare Fronius seria IS 15, 20, 30

  

 

Facilitatile produsului

 

 

  
Cod Produs LPI00181 LPI00182 LPI00183
Model FRONIUS IG 15 FRONIUS IG 20 FRONIUS IG 30
Input Data  
MPP voltage range  150 - 400 V  150 - 400 V  150 - 400 V 
Max. input voltage (at 1000 W/m²; - 10° C) 500 V 500 V 500 V
PV system output  1300 - 2000 Wp  1800 - 2700 Wp  2500 - 3600 Wp   
Max. input current    10,8 A 14,3 A   19 A   
Output Data  
     
Nominal output   1300 W   1800 W  2500 W   
Max. power output   1500 W  2000 W  2650 W 
Max. efficiency  94,2 %  94,3 %  94,3 %   
Euro efficiency  91,4 %  92,3 %  92,7 %  
Mains voltage / frequency 230 V / 50 Hz (60 Hz)   
Distortion factor  < 3,5 %  
Power factor   1
Power consumption at night  0 W 
General Data   
     
Size l x w x h 

366 x 344 x 220 mm (500 x 435 x 225 mm)  
Weight  9 kg (12 kg)       
Cooling  controlled forced-air cooling     
Protection class (housing)  IP 21 (IP 45)
Ambient temperature range  - 20 ... 50° C  
Permissible humidity  0 ... 95 % 
Protective Devices 
     
DC insulation measurement  warning when Riso< 500 k Ohm    
Polarity reversal protection       built-in  
Behaviour on DC overload  displacement of operating   

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3.Invertoare Fronius IS 40, 60  

 

Facilitatile produsului

 
Cod Produs LPI00184 LPI00185
Model FRONIUS IG 40 FRONIUS IG 60 HV 
Input Data
MPP voltage range  150 - 400 V  150 - 400 V 
Max. input voltage (at 1000 W/m²; - 10° C)  500 V  530 V 
PV system output  3500 - 5500 Wp  4600 - 6700 Wp  
Max. input current  29,4 A  35,8 A
Output Data 
Nominal output  3500 W  4600 W 
Max. power output  4100 W   5000 W 
Max. efficiency  94,3 %   94,3 %  
Euro efficiency  93,5 % 93,5 %  
Mains voltage /frequemcy  230 V / 50 Hz (60 Hz)
Distortion factor  < 3,5 %  
Power factor  1  
Power consumption at night  0 W 
General Data 
   
Size l x w x h   610 x 344 x 220 mm (733 x 435 x 225 mm) 
Weight  16 kg (20 kg) 
Cooling  controlled forced-air cooling 
Protection class (housing) IP 21 (IP 45)
Ambient temperature range  - 20 ... 50° C 
Permissible humidity  0 ... 95 % 
Protective Devices 
   
DC insultion measurement  warning when Riso < 500 k Ohm 
Polarity reversal protection  built-in 
Behaviour on DC overload  displacement of operating point 

 

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