SANDI 20kW grid solar power inverter with isolation transformer
Summarize
PV grid-connected power system includes PV modules, grid-connected inverter, and meter and power switchboard. The PV modules convert the solar energy to the DC power, then the grid-connected inverter the DC power to the sine wave AC power which has the same frequency and phase with the grid voltage, and then the AC power FEED-in the grid partly and the other power supply the local loads, it can save any surplus electricity.
Features
◆Using U.S. TI' DSP chip to control.
◆using Japan's Mitsubishi IGBT modules, to enhance system reliability.
◆Maximum Power Point Tracking technology(MPPT),MPPT Max. Efficiency>99%.
◆Active and passive two kinds of power brown-out detection, to achieve control of anti-island.
◆with Wide DC input voltage range.
◆EMC priority, Strong anti-interference ability.
◆circuit frame compact, max. Efficiency≥95%.
◆pure sine wave output, automatically synchronized with the grid tracking, power factor close to 1.
◆Fed into the grid mode selectable low frequency transformer or non isolated transformer.
◆Inverter current double closed-loop control, low current harmonic content , pollution-free and non-shock to grid.
◆Perfect protection and alarm functions.
◆big-screen English LCD, perfect display, interface-friendly.
◆A variety of communication interfaces, host computer monitoring, remote data acquisition and monitoring.
Technical parameters: |
Type
|
SDS-20KW
|
Isolation
|
Low frequency transformer isolation
|
Max. DC input power
|
22KWp
|
Max. DC input voltage
|
800Vdc
|
Max.PV voltage range(MPPT)
|
450Vdc~780Vdc @595Vdc
|
Recommended number of PV module voltage @ string
|
about 35V @ 17 string
|
Battery board Joint type
|
connection terminal
|
Max. Input current
|
49A
|
Nominal AC output power
|
20KW
|
Max. AC output power
|
22KW
|
THD of AC current
|
<3%(nominal power)
|
Power factor
|
>0.99
|
Max. Efficiency
|
95%
|
Euro efficiency
|
93%
|
Nominal AC voltage
|
310VAC~450VAC
|
Nominal AC frequency
|
47.5Hz~51.5Hz
|
Internal power consumption an night
|
<100W
|
Automatically put into operation conditions
|
When the DC input and power grids meet to the requirements, the inverters automated operation
|
Automatic restart time
|
5min(time adjustable)
|
Protection
|
Possess the protecting function of polarity connecting contrary, short circuit, island effects, over heat, over land
|
Comm. interfaces
|
RS485/RS232/GPRS/Ethernet
|
Operating Temp.
|
-25℃~+55℃
|
Relative humidity
|
0~95%,no condensing
|
Altitude(m)
|
≤2000meters(Over 2000 meters to reduce the using amount)
|
Cooling method
|
Controlled forced-air cool
|
Noise
|
≤60dB
|
Protection degree
|
IP20(indoor)
|
Size(W*L*H mm)
|
800*600*2060
|
Weight(kg)
|
350
|
|