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:What are the methods of photovoltaic grid-connected inverter control
The square wave output of the inverter using pulse width modulation integrated circuits, such as SG3525, TL494 and so on. Practice has proved that the use of SG3525 integrated circuits, and the use of power FET as a switching power components, to achieve high performance of the inverter, because the SG3525 has a direct drive power FET capability and has an internal reference source and operational amplifiers and Undervoltage protection, so its peripheral circuit is very simple.
Q:What is the difference between a PV inverter and a solar inverter?
The main function of photovoltaic grid-connected inverter is to convert the DC power of the solar PV module into the same frequency as the sinusoidal AC power of the grid (the grid is generally AC power grid, DC can not be directly connected)
Q:The working principle of photovoltaic grid - connected inverter
Inverter will be converted into alternating current DC, if the DC voltage is low, then through the AC transformer boost, that is, the standard AC voltage and frequency. For large-capacity inverter, because the DC bus voltage is high, AC output generally does not require transformer boost that can reach 220V, in the small and medium capacity of the inverter, because the DC voltage is low, such as 12V, 24V, It is necessary to design a boost circuit.
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.
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?
Grid-connected inverter does not need energy storage, but the energy can not be controlled, the number of photovoltaic sent to send online how much, simply do not want people to.
Q:Installation and maintenance of photovoltaic grid - connected inverter
Before the installation should first check whether the inverter in the transport process for damage. When selecting the installation site, there should be no interference with any other power electronic equipment in the surrounding area.
Q:What is the PV inverter starting voltage
sine wave becomes narrower and the voltage width in the center of the sine wave is widened and the switching element is always operated in a direction at a certain frequency in a half cycle, A pulse wave train (pseudo sine wave). Then let the pulse wave form a sine wave through a simple filter
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:Generally a large grid-connected photovoltaic power plant will have several inverters
The use of a high-power grid-connected inverter into the grid, the need for line design is relatively simple, because the DC and AC lines are separated, the use of convergence box to summarize, DC bus and then into the grid inverter

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