PV Inverter Sunmax D 3000/4000/5000

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Loading Port:
Shanghai
Payment Terms:
TT OR LC
Min Order Qty:
5 watt
Supply Capability:
3000 watt/month

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Product Description:

The Sunmax D 3000/4000/5000 series are applicable to rooftop installation and small scale photovoltaic grid-connected power plants. Their rated output powers are 3 kW, 4kW, 5 kW respectively. This series are transformer-less in design and have a wide range of MPPT voltage. Their maximum conversion efficiency and MPPT tracking accuracy reaches 97.6 % and 99.5 % respectively. The maximum DC voltage reaches 580 V. The series have dual MPPT trackers, providing maximum flexibility for solar plants. The series adopts the latest technology, supports reactive power adjustable and meets the VDE-AR-N 4105 standard.

Characteristics

Dual MPPT with tracking efficiency over 99.9%

Supporting reactive power adjustable

Unit noise less than 30Db

Current harmonic less than 3%

Design features:

Allows access to third party monitoring system: Solar-log, Solar –man, Taoke, etc.

Equipped with active / inactive way to adjust the design instruction

Single / dual MPPT design

IP65 protection class to meet outdoor installation requirements

Transformer-less design

Units have built-in leakage current monitoring devices

Suspension design, installation is simple

Man-machine interface (LCD) in English, Italian, German languages

Man-machine interface (LCD) regulation parameters can be set making installation easy

Total digital design.


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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: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: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: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:What is the difference between a PV inverter and a solar inverter?
Instability, the wind speed and the equipment itself will directly affect the generator rotation, so the voltage and current fluctuations, frequency instability, in short, is the power quality is poor) Therefore, through the inverter after the first rectification inverter to improve the quality of power
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:Grid-connected inverter is generally divided into photovoltaic power generation grid-connected inverter, wind power grid-connected inverter, power equipment and grid-connected inverter and other power generation equipment power generation inverter.
The grid inverter is a current source, the output voltage is basically the grid voltage, may be slightly raised.
Q:The function of photovoltaic grid - connected inverter
After some additional voltage buffering, the left side of the bridge is usually 18 ~ 20khz switching frequency, the dc voltage is converted to ac voltage.
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:Generally a large grid-connected photovoltaic power plant will have several inverters
Inverter, a single failure, does not affect other operations, the impact on the grid is small, high reliability.

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