On Grid Solar Inverter GW20K-DT

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Product Description:

GW20K-DT

 

GW20K-DT photovoltaic inverter is suitable for commercial and industrial roofs as well as small and medium-sized photovoltaic power systems. Intelligent heat dissipation design ensures slower temperature rise and more stable running conditions. The dual-lines MPPT extra-wide voltage range ensures that the system is with more flexible configuration.

DC Input DataMax.PV-generator power[W]20500
Max.DC voltage[V]1000
MPPT voltage range[V]500~800
Turn on DC voltage[V]250

Max.DC work current[A]

22/22
Number of inputs/MPP trackers6/2 (can parallel)
DC connectorSUNCLIX,MC IV (optional)
Standby power consumption [W]10
AC Output DataNominal AC power[W]20000
Max.AC power[W]20000
Max.output current[A]30
Nominal output voltage rangeVDE-AR-N4105,VDE0126-1-1/A1,RD1699,G59/2,AS4777.2/.3
AC grid frequencyVDE-AR-N4105,VDE0126-1-1/A1,RD1699,G59/2,AS4777.2/.3
THDi<1.5%< td="">
Power factor0.90 leading...0.90 lagging
AC connection3W/N/PE,230/400V
EfficiencyMax.efficiency98.2%
European efficiency>97.5%
MPPT adaptation efficiency>99.5%
Safty EquipmentLeakage current monitoring unitIntegrated
DC switch disconnectorOptional
Islanding protectionAFD
Grid monitoringVDE-AR-N4105,VDE0126-1-1/A1,RD1699,G59/2,AS4777.2/.3
Normative ReferenceEMC complianceEN 61000-6-1 , EN61000-6-2, EN 61000-6-3, EN 61000-6-4
Safety complianceIEC 62109-1, AS3100
General DataDimensions(W*H*D) [mm]516*650*203
Net weight [kg]39
HousingFor outdoor and indoor
Mounting informationWall mounting
Operating temperature range-20~60℃(up 45℃ derating)
Relative humidity0 ~ 95%
Site altitude[m]2000
IP proection classIP65
TopologyTransformerless
CoolingFan Cooling
Noise level[dB]<45< td="">
Display5"LCD
CommunicationUSB2.0;RS485/Wi-Fi/ZigBee(optional)
Standard warranty[years]5/10/15/20/25(optional)

 

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Q:In a photovoltaic grid-connected project, the role of the inverter is to convert the voltage into AC 220V or 380V for the grid, since the transformer will raise the voltage again
Spontaneous use is a way of grid, that is issued to the electricity, mainly their own family or internal use, the excess part of the power to the grid
Q:The working principle of photovoltaic grid - connected inverter
In the small-capacity inverter generally push-pull inverter circuit, full-bridge inverter circuit and high-frequency step-up inverter circuit three, push-pull circuit, the step-up transformer neutral plug connected to the positive power supply, two power Alternating current, the output to get AC power, due to the power transistor to ground, drive and control circuit is simple, and because the transformer has a certain leakage inductance, can limit the short circuit current, thus improving the reliability of the circuit. The disadvantage is the low utilization of the transformer, driving the emotional load is poor.
Q:Three-phase photovoltaic inverter grid, the use of phase-locked loop is what?
In addition to the function of converting DC current into alternating current, the inverter also has the maximum output tracking function (MPPT), overvoltage protection, short circuit protection, island protection, overheat protection, overload protection and DC grounding
Q:What are the methods of photovoltaic grid-connected inverter control
Inverter main circuit need to have a control circuit to achieve, generally have square wave and sine wave two control methods, square wave output inverter power supply circuit is simple, low cost, but low efficiency, harmonic components. Sine wave output is the development trend of the inverter, with the development of microelectronics technology, there are PWM function of the microprocessor has also come out, so the sine wave output inverter technology has matured.
Q:PV grid-connected inverter can directly load it?
Converter is the AC voltage of the grid into a stable 12V DC output, and the inverter is the AC output of the 12V DC voltage into high-frequency high-voltage alternating current; two parts are also used with more pulse width
Q:What is the difference between a PV grid-connected inverter and an off-grid inverter?
Offline generally need energy storage, not to send energy online. Power grid has no right to interfere.
Q:What is the PV inverter starting voltage
The inverter not only has the function of direct current conversion, but also has the function of maximizing the performance of the solar cell and the system fault protection function. (With grid system), automatic voltage adjustment function (for network connection), DC detection function (for network connection), DC grounding detection (for network connection), automatic power control function Function (for grid connection). Here is a brief introduction to automatic operation and shutdown function and maximum power tracking control function.
Q:After the PV inverter, how to achieve the same period before the network?
Solar panel simulator: with MPPT function, simulated morning, noon, afternoon, evening, rainy weather, solar panels produced under different conditions in different voltages.
Q:Photovoltaic grid-connected inverter without DC emc how will happen
by means of energy converters can be converted into electrical energy. The process of converting light energy directly into electrical energy is precisely the response to photovoltaic effects. Without the need for any other mechanical parts, the energy in
Q:What is the difference between low voltage grid connection and medium voltage grid connection?
For photovoltaic power plants when the power system accidents or disturbances caused by photovoltaic power plant grid voltage drop, in a certain voltage drop range and time interval, the photovoltaic power plant can ensure that non-off-line continuous operation.

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