PV On-Grid String Inverter KSG-25KT / KSG-30KT / KSG-40KT

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50 pc
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15000 pc/month
Option:
25KT-40KT
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Item specifice:

Output Power: 25000W/30000W/40000W/2500W Inveter Efficiency: 98.2%-98.6% Output Voltage(V): 400
Input Voltage(V): 600 Output Current(A): 39.7A/47.7A/63.6A Output Frequency: 50Hz / 60Hz±5Hz

Product Description:

Product Description:

Max. PV voltage up to 1100V Type II DC /AC SPD

DC/AC ratio up to 1.5 IP66 protection

High efficiency up to 98.7% Smaller and lighter

Compatable for big capacity PV panel WiFi / 4G Plug optional


Technical Specifications:

MODELKSG-25KTKSG-30KTKSG-40KT
Input(DC)
Max. remonmmended PV power37500W45000W60000W
Max. DC Voltage1100V1100V1100V
Nominal Voltage600V370V370V
Start Voltage180V180V180V
MPPT Voltage Range200V-1000V200V-1000V200V-1000V
Number of MPP Tracker333
Strings Per MPP Tracker222
Max. Input Current Per MPPT30A30A30A
Max. Short-circuit current per MPPT50A50A50A
Output(AC)
Nominal AC output power25000W30000W40000W
Max. AC output power27500VA33000VA44000VA
Nominal AC Voltage400V 3L+N
AC Grid Frequency Range50Hz / 60Hz±5Hz
Max. Output Current (A)39.7A47.7A63.6A
Power Factor (cosφ )0.8 leading to 0.8 lagging
THDi3%
Efficiency


Max. Efficiency98.60%98.70%98.70%
Euro Efficiency98.30%98.40%98.40%
Protection devices
DC SwitchYes
Anti-islanding ProtectionYes
Output Over CurrentYes
DC Reverse Polarity ProtectionYes
String Fault DetectionYes
AC/DC Surge ProtectionType II
Insulation DetectionYes
AC Short Circuit ProtectionYes
General Specifications
Dimensions W x H x D (mm)380*483*227
Weight(kg)35
Environment
Operating Temperature range–25℃~+60℃
Cooling TypeFan Cooling
Max. Operation Altitude4000m
Max. Operation Humidity0-100%(No Condensation)
AC Output Terminal TypeConnector
IP ClassIP66
TopologyTransformer-less
Communication InterfaceRS485/WIFI/4G
DisplayLCD
Certification & StandardEN/IEC62109-1/2IEC/EN61000-6-2;IEC/EN61000-6-4;
IEC61683;IEC60068;IEC60529;IEC62116;IEC61727;EN50549-1;
AS 4777.2;VDE-AR-N-4105;VDE 0126-1-1;CEI0-21;
G98;G99;C10/C11;NB/T32004-2018
GB/T19964-2012


FAQ:

Q:How the output voltage of the PV inverter and the grid-connected voltage are determined

Inverter is the DC power (battery, battery) into alternating current (usually 220V, 50Hz sine wave). It consists of inverter bridge, control logic and filter circuit. Widely used in air conditioning, home theater, electric wheel, power tools, sewing machines, DVD, VCD, computer, TV, washing machine, range hood, refrigerator, video recorders, massage, fan, lighting and so on. In foreign countries

Q:Installation and maintenance of photovoltaic grid - connected inverter

only when the local power sector permission by the professional and technical personnel to complete all the electrical connection before the inverter can be connected.

Q:What is the difference between a PV grid-connected inverter and an off-grid inverter?

Off-grid inverter is equivalent to their own to establish an independent small power grid, mainly to control their own voltage, is a voltage source.

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:Is the PV inverter a current source or a voltage source?

According to the waveform modulation method can be divided into square wave inverter, stepped wave inverter, sine wave inverter and modular three-phase inverter.

Q:Photovoltaic grid-connected inverter without DC emc how will happen

Solar photovoltaic power generation technology is the use of solar cells, the photovoltaic effect of semiconductor materials, solar radiation can be directly converted into a new type of power generation system, solar energy is a radiant energy, solar power means --- to direct conversion of sunlight Into electricity,

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.

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:PV grid-connected inverter and independent inverter in the control of what is the difference

The independent inverter in the output voltage phase amplitude of the frequency control is initially set good. Independent inverter, you should refer to off-grid inverter, do not need to consider the grid situation.


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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:Installation and maintenance of photovoltaic grid - connected inverter
, any failure that affects the safety performance of the inverter must be immediately removed before turning on the inverter again.
Q:Generally a large grid-connected photovoltaic power plant will have several inverters
, This method is simple to design, easy maintenance, but also for the power grid harmonics smaller, good power quality!
Q:What is the PV inverter starting voltage
Photovoltaic inverter, also known as power regulator, according to the inverter in the use of photovoltaic power generation system can be divided into two kinds of independent power supply and grid. According to the waveform modulation method can be divided into square wave inverter, stepped wave inverter, sine wave inverter and modular three-phase inverter. For the inverter for the grid system, depending on whether the transformer can be divided into transformer-type inverter and transformer-free inverter.
Q:Photovoltaic grid-connected inverter without DC emc how will happen
Solar photovoltaic power generation technology is the use of solar cells, the photovoltaic effect of semiconductor materials, solar radiation can be directly converted into a new type of power generation system, solar energy is a radiant energy, solar power means --- to direct conversion of sunlight Into electricity,
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:What is the difference between a grid-connected inverter and an off-grid inverter? What are the advantages of a hybrid inverter?
Hybrid inverter is not a clear concept, but now both energy storage dual-grid inverter does have the ability to receive control system,
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 inverter and a solar inverter?
The main component of the inverter is the three-phase bridge converter. The main purpose of the grid-connected inverter is to change the power to DC and change the AC power. The main purpose is to improve the power quality (because the wind power generation is very large
Q:Is the PV inverter a current source or a voltage source?
The inverter is mainly composed of a switching element such as a transistor, and turns the DC input into an AC output by repeatedly turning ON-OFF the switching element in a regular manner.

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