Photovoltaic Inverter 50KW Off Grid Three Phase

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50000 watt
Supply Capability:
3000000 watt/month

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1. Structure of Photovoltaic Inverter 50KW Off Grid Three Phase

A solar inverter, or PV inverter, or Solar converter, converts the variable direct current (DC) output of a photovoltaic (PV) solar panel into a

 utility frequency alternating current (AC) that can be fed into a commercial electrical grid or used by a local, off-grid electrical network. It is

a critical BOS–component in a photovoltaic system, allowing the use of ordinary AC-powered equipment. Solar inverters have special

functions adapted for use with photovoltaic arrays, including maximum power point tracking and anti-islanding protection.

 

2. Main Features of Photovoltaic Inverter 50KW Off Grid Three Phase

• using IGBT from Mitsubishi company as the power components
•using American ATEMEL company microprocessor as figure controller
• perfect protection and warning functions
• circuit frame compact,Max. Efficiency≥94%
• with wide input voltage range
• RS232/485 communication,multi communication interface can be selected
•big-screen English LCD, perfect display, interface-friendly

 

3. Photovoltaic Inverter 50KW Off Grid Three Phase Images

 

 

4. Photovoltaic Inverter 50KW Off Grid Three Phase Specification

窗体顶端

50KVA off grid three phase inverter technical parameters

窗体底端

Type

ND220-50KS

ND380-50KS

DC input

Input rated voltage

220 VDC

380 VDC

Input rated current

227 A

132 A

Input DC voltage range

180-300 VDC

300-490VDC

 

Allow input voltage   range

220 VAC / 380 VAC   / 400 VAC ± 15% VAC

AC input

Input rated current

139A / 76A / 72.5A

 

Bypass transfer time

4 ms

AC output

Rated capacity

50KVA

Output rated power

40KW

Output rated voltage   and frequency

220 VAC / 380 VAC   / 400 VAC,50Hz / 60Hz

Output rated current

139A / 76A / 72.5A

Output voltage accuracy

220 VAC / 380 VAC   / 400 VAC ± 2%

Output frequency   accuracy

50Hz / 60Hz ±0.05%

Waveform distortion   (THD).   (Linear load)

≤3%

Dynamic response time   (Load 0←→100%)

2ms

Power factor (PF)

0.8

Overload capacity

120%,3 minutes,150%,10 second

Crest factor (CF)

3:01

Inverter efficiency

94%

Working Environment

Dielectric strength

1500VAC,1minute

Noise (1m)

≤50dB

Ambient temperature

-10~+50

Humidity

0~90%,No condensation

Altitude

≤5000 m

Production function

Input reverse   protection, input under-voltage protection, output overload protection,   output short circuit protection, thermal protection

 

 

5. FAQ of Photovoltaic Inverter 50KW Off Grid Three Phase

Q1:Can we visit your factory?

A1:Sure,welcome at any time,seeing is believing.

Q2:Which payment terms can you accept?

A2:T/T,L/C,Moneygram,Paypal are available for us.

 

 

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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 small use of field-effect transistors while using a DSP conversion controller to improve the quality of the output power makes it very close to the sine wave current.
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 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:What is the difference between low voltage grid connection and medium voltage grid connection?
When the power grid failure or disturbance caused by the power supply and network voltage drop, in the voltage drop range, the power group can be uninterrupted through the inverter and network operation.
Q:What is the difference between a grid-connected inverter and an off-grid inverter? What are the advantages of a hybrid 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: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:Installation and maintenance of photovoltaic grid - connected inverter
Before making an electrical connection, be sure to use the opaque material to cover or disconnect the PV panel. Exposure to sunlight, photovoltaic arrays will produce dangerous voltages. All installation operations must be done only by qualified technicians.
Q:Solar grid inverter does not merge into the grid, direct access to the load to the load power supply?
The solar grid-connected inverter is not connected to the grid and can not be directly connected to the load to supply power to the load because there is no voltage.
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 problem
The first zero line is the AC output. Any AC output of the inverter will have zero line, whether it is isolated or non-isolated. Isolation is the safety of high voltage inverters and regulators. 50KW above the inverter almost with the transformer.

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