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:Three-phase photovoltaic inverter grid, the use of phase-locked loop is what?
Photovoltaic inverters for grid-connected photovoltaic power generation systems are primarily capable of receiving DC power from photovoltaic arrays and converting them into sine-wave currents of the same frequency and in phase with the access grid for powering the grid or local loads.
Q:After the PV inverter, how to achieve the same period before the network?
It can automatically detect the generator and the grid frequency and voltage, in the frequency, voltage, phase are in line with the requirements of the grid to set the time before the release of the closing signal, so that it can be safely and securely connected.
Q:Photovoltaic grid-connected inverter without DC emc how will happen
light is obtained by the electrons of the semiconductor device, thus generating electrical energy. This energy conversion of light energy into energy, that is, solar cells. Solar cells, like transistors, are made of semiconductors. Its main material is silicon, and there are some other alloys. High-purity silicon used in the manufacture of solar cells is subject to special purification. Solar cells as long as the sun or light exposure,
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:How the output voltage of the PV inverter and the grid-connected voltage are determined
DC voltage and AC side voltage does not matter, the general PV inverter AC output is 400V / N / PE. With no isolation transformer and output voltage does not matter, grid-connected inverter is the regulation of current, and network voltage depends on the grid voltage. And the grid before the inverter will detect the grid voltage, meet the conditions will be network.
Q:PV grid-connected inverter and independent inverter in the control of what is the difference
Photovoltaic grid-connected inverter is the assembly of the DC into AC power for the use of load, or do not use the load, the inverter after the AC power to the city power grid, when the electricity outage, the inverter will automatically
Q:Is the grid side of the grid and the inverter?
The grid load side of the grid is the grid. The inverter is an important part of the PV grid-connected system and can not be regarded as an external load. Photovoltaic power generation system is included in both grid and off-grid.
Q:The working principle of photovoltaic grid - connected inverter
Full-bridge inverter circuit to overcome the shortcomings of the push-pull circuit, the power transistor to adjust the output pulse width, the output AC voltage RMS that changes. Since the circuit has a freewheeling circuit, even if the inductive load, the output voltage waveform will not be distorted. The disadvantage of this circuit is that the upper and lower arms of the power transistor are not common, so you must use a special drive circuit or use isolated power supply. In addition, in order to prevent the upper and lower arm co-conduction, must be designed to turn off after the conduction circuit, that must be set dead time, the circuit structure is more complex.
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
Connected to the grid is connected to which specific location ah? Transformer is to buy a separate, or buy inverter inside the type of transformer? For example, Sweden's 15KW and 30KW grid roof projects, the roof, for example, more remote to be transported to other electricity.
Q:What is the difference between a grid-connected inverter and an off-grid inverter? What are the advantages of a hybrid inverter?
Grid-connected inverter does not need energy storage, but the energy can not be controlled, how much light to send online to the number of online, simply do not want people to the grid does not like.

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