Grid connection inverters

STECA COOLCEPT FLEX

Coolcept fleX Steca grid connection inverters introduces the successor generation to the established coolcept-topology. Coolcept fleX offers a creative energy concept for any modern home.
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Coolcept fleX offers an complette inverters family of grid conneciton inverters for the actual home.

What is coolcept?

Coolcept is Steca‘s new inverter topology that provides the highest peak efficiency. It is basically characterised by circuit simplicity combined with highest efficiency. The patented coolcept topology is a global innovation that is only available from Steca.

The advantages of coolcept

Coolcept is cool. 
High peak efficiency means the lowest possible heat dissipation. This makes cooling elements unnecessary.

Coolcept is efficient.
Stable peak efficiency over the entire power range ensures maximum yields.

Coolcept is long-living.
Low heat dissipation and cool components guarantee a long service life.

This incomparably affordable all-in one solution offers functions for very different applications and is even scalable in relation to the power requirement. Whether you need one or more MPP trackers, high-voltage or low-voltage storage, or a solution with or without an emergency power supply – everything is possible. Steca has already thought of and prepared for charging an electric vehicle straight from a PV generator. The new components and setting options enable the use in many countries.

Maximum efficiencies at all input voltages and reliable cooling concept
The maximum efficiencies of the state-of-the-art power electronics topology ensure minimal losses, thus guaranteeing a very long service life thanks to extremely low levels of self-heating.

  StecaGrid 1511 StecaGrid 2011 StecaGrid 2511 StecaGrid 3011 StecaGrid 3011-2 StecaGrid 3611 StecaGrid 3611-2 StecaGrid 4611-2
DC Input side (PV generator)
Maximum input voltage 450 V 450 V 450 V 750 V 750 V 750 V 750 V 750 V
Operating input voltage range 75 ... 360 V 75 ... 360 V 75 ... 360 V 125 ... 600 V 125 ... 600 V 150 ... 600 V 150 ... 600 V 150 ... 600 V
Operating input voltage range (maximum power) 120 ... 360 V 160 ... 360 V 200 ... 360 V 230 ... 600 V 230 ... 600 V 280 ... 600 V 280 ... 600 V 360 ... 600 V
Number of MPPT tracker 1 1 1 1 2 1 2 2
Maximum input current 13,0 A 13,0 A 13,0 A 13,0 A 2 x 13,0 A 13,0 A 2 x 13,0 A 2 x 13,0 A
Maximum input power  1540 W 2050 W  2560 W  3070 W  3070 W 3770 W 3770 W 4740 W
AC output side (Grid connection)
Grid voltage 185 ... 267 V (depending on regional setings)
Rated grid voltage 230 V
Maximum output current 12,0 A

12,0 A

14,0 A 14,0 A 14,0 A 16,0 A 16,0 A 20,0 A
Maximum active power (cos phi = 1) 1500 W 2000 W 2500 W 3000 W 3000 W 3680 W  3680 W 4600 W
Maximum apparent power 1500 VA 2000 VA 2500 VA 3000 VA 3000 VA 3680 VA 3680 VA 4600 VA
Rated power 1500 W 2000 W 2500 W 3000 W 3000 W 3680 W 3680 W 4600 W
Rated frequency 50 / 60 Hz
Frequency 45 ... 65 Hz (depending on regional setings)
Night-time power loss < 3 W
Feeding phases Single phase
Total harmonic distorsion (cos phi = 1) < 3 %
Power factor cos phi 0,8 capacitative ... 0,8 inductive
Performance
Max. Efficiency 97,4 % 97,4 % 97,4 % 97 % 97 % 97 % 97 % 97,4 %
European efficiency 96,1 % 96,5 % 96,6 % 96,3 % 96,3 % 96,3 % 96,3 % 96,9 %
MPP Efficiency > 99,7 % (static), > 99% (dynamic)
Own consumption < 20 W
Power derating at full power from 50 ºC (Tamb) 50 ºC (Tamb) 50 ºC (Tamb) 50 ºC (Tamb) 45 ºC (Tamb) 45 ºC (Tamb) 45 ºC (Tamb) 40 ºC (Tamb)
Safety
Isolation principle Transformerless, No galvanic issolation
Grid monitoring Yes, integrated
Residual current monitoring Yes, Integrated (The design of the inverter prevents it from causing DC leakage current)
Protection class Protection class 2 (RCD Type A sufficient)
Operating conditions
Area of application Outdoors & indoors
Ambient class (IEC 6071-3-4) 4K4H
Ambient temperature - 25 ºC ... 60 ºC
Storage temperature - 30 ºC ... 80 ºC
Relative humidity 0 ... 100 % (non-condensating)
Noise emission (typical) 31 dBA
Fitting and construction
Degree of protection IP 65
Overvoltage category III (AC), II (DC)
DC input side connection Phoenix Contact SUNCLIX (connectors included)
AC input side connection Connector Wieland RST25i3 (connectors included)
Dimmensions ( X x Y x Z) 657 x 399 x 222 mm
Weight 11,7 Kg 11,7 Kg 11,7 Kg 12,4 Kg 13,0 Kg 12,4 Kg 13,0 Kg 13,1 Kg
Communication interface RS-485 ( 1 x RJ45)
Integrated DC circuit breaker Yes, Compliant with DIN VDE 0100-712
Cooling principle Temperature controlled fan, variable speed, internal (dustproof)
Certificates See Steca website for updated certificates.
 

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