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On-Grid solar inverter – three phase – lower power (up to 11kW)

Short Description:

Output Power: 4kW, 5kW, 6kW, 8kW, 10kW, 11kW, Customizable
DC input voltage: 900V, 1000V
AC output voltage: 230V / 400V (320V ~ 460V), 220V / 380V (320V ~ 460V)
MPPT efficiency: 99.90%


Product Detail

Application

Product Tags

On-Grid-solar-inverter---three-phase-–-lower-power-(up-to-11kW)-details1

The most important feature of grid-connected inverters is the high power and low cost of the system. Grid-connected inverters are generally used in large PV plant systems where many parallel PV strings are connected to the DC input of the same centralized inverter, generally using three-phase IGBT power modules for the more powerful ones and field-effect transistors for the less powerful ones, while a DSP conversion controller is used to improve the quality of the power produced so that it is very close to sinusoidal current.

Module inverters are used to connect each PV module to an inverter, while each module has a separate maximum power peak tracking, so that the modules work better with the inverter. They are typically used in PV plants from 50W to 400W and have a lower overall efficiency than string inverters.

The working principle of a grid-connected inverter

At the heart of the inverter unit is the inverter switching circuit, referred to as the inverter circuit. This circuit performs the function of the inverter by means of the conduction and switching off of power electronic switches.

Characteristics of grid-connected inverters

1. With high efficiency
Due to the current high price of solar cells, it is important to find ways to increase the efficiency of the inverter in order to maximize the use of solar cells and increase the efficiency of the system.

2. High reliability
This requires a reasonable circuit structure, strict component selection and various protection functions, such as reverse input DC polarity protection, AC output short circuit protection, overheating, overload protection, etc.

3. The input voltage has a wide range of adaptation.
As the terminal voltage of the solar cell varies with the load and sunlight intensity. Especially when the battery ages its terminal voltage varies greatly, e.g., for a 12V battery, its terminal voltage may vary between 10V and 16V, which requires the inverter to ensure normal operation within a wide range of DC input voltage.

Parameters

Rated output power 4kW 5kW 6kW 8kW 10kW 11kW
DC input Maximum input power 4.8kW 5.7kW 7.2kW 9kW 11kW 15kW
Maximum input voltage 900V 1000V
Starting voltage 220V 180V
Minimum operating voltage 150V 180V 170V
MPPT Voltage Range 180V ~ 800V 170V ~ 800V / 450V
Number of MPPT / Number of accessible strings per group 2/1
Maximum input current per MPPT group X number of MPPT 12A x 1 12A x 2 12.5A x 2 13A x 2
AC output Maximum output current 6.4A 8A 9.5A 12.5A 16A 15.7A
Rated output power 4kW 5kW 6kW 8kW 10kW 11kW
Output Voltage Range 230V / 400V ( 320V ~ 460V ), 220V / 380V ( 320V ~ 460V )
Grid frequency range 50Hz (47Hz ~ 51.5Hz) / 60Hz (57Hz ~ 61.5Hz) 50Hz (47Hz ~ 51.5Hz) / 60Hz (57Hz ~ 61.5Hz)
Power Factor  -0.8 ~ +0.8 ( Adjustable )  -0.9 ~ +0.9
Harmonic distortion < 3%
Rated grid voltage/frequency 230V / 400V; 220V / 380V, 3L + N + PE / 3L+PE, 50Hz / 60Hz 3L + N+PE / 3L + PE / 230 / 400V; 220 / 380V ( 320V ~ 460V )
Efficiency Maximum efficiency 98.10% 98.10% 98.20% 98.30% 98.30% 98.30%
European Efficiency 97.50% 97.60% 97.70% 97.80% 97.80% 97.80%
MPPT efficiency 99.90%
Protection Protection function DC switching, AC short circuit protection, AC output over-current protection, insulation impedance protection, surge protection, islanding protection, temperature protection, ground fault monitoring, etc.
Display and Communication Display LCD (Support backlight display)
LCD Language English / Chinese / German / Dutch / Polish
Communication method RS485 ( standard ) / WiFi / Ethernet (optional)
Criteria met Grid connection standard IEC 61727(IEC 62116), IEC 60068-2-1:2007, IEC 60068-2-2:2007, IEC 60068-2-14:2009, IEC 60068-2-30:2005, IEC 61683:1999, VDE0126-1-1, VDE-AR-N4105, G59/3, C10/11, AS/NZS 4777.2:2015, NB/T 32004-2013, PEA, ZVR
Security / EMC IEC 62109-1:2010, IEC 62109-2:2011, EN 61000-6-2:2005, EN 61000-6-3:2007/A1:2011
General parameters Cooling method Natural heat dissipation Intelligent air cooling Natural heat dissipation
Protection level IP65
Power consumption at night < 0.5W < 1W
Topology No transformer
Operating temperature range  -25 ° C ~ +60 ° C (automatic derating beyond 45 ° C)
Relative humidity 0 ~ 95% (non-condensing) 0 ~ 100%
Noise ≤ 30dB ≤ 50dB
Highest altitude 3000m (derating operation above 2000m)
Dimension (W x H x D) 360 x 530 x 150 mm 360 x 575 x 150 mm 475 x 360 x 160 mm
Weight 22kg 25kg 18.5kg%
Warranty 5 years (standard) / 10 years (optional)
On-Grid Solar Inverter – Single Phase (1kW – 6kW)-DETAILS2
Hybrid solar inverter – higher power (above 8kW)-details2

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