Sungrow SG50CX User Manual

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6
Commissioning
6.1 Inspection Before Commissioning
Check the following items before starting the inverter:
• All equipment has been reliably installed.
• DC switch(es) and AC circuit breaker are in the "OFF" position.
• The ground cable is properly and reliably connected.
• The AC cable is properly and reliably connected.
• The DC cable is properly and reliably connected.
• The communication cable is properly and reliably connected.
• The vacant terminals are sealed.
• No foreign items, such as tools, are left on the top of the machine or in the junction box (if
there is).
• The AC circuit breaker is selected in accordance with the requirements of this manual
and local standards.
• All warning signs & labels are intact and legible.
6.2 Commissioning Procedure
If all of the items mentioned above meet the requirements, proceed as follows to start up the
inverter for the first time.
Step 1 Rotate the DC switch(if there is) of the inverter to "ON" position.
Step 2 Connect the AC switch or circuit breaker between the inverter and the grid.
• Strictly follow the preceding sequence. Otherwise, the product may be dam-
aged, and the loss caused is not covered by the warranty.
• If the DC side is powered up while the AC side is not, the inverter indicator may
turn red, and the inverter will report a fault named “Grid Power Outage” (the
fault information can be viewed on the iSolarCloud App, see “Records” for de-
tails). The fault is automatically cleared when the AC circuit breaker between
the inverter and the grid is closed.
• Before closing the AC circuit breaker between the inverter and the power grid,
use a multimeter that is set to the AC gear to ensure that the AC voltage is with-
in the specified range. Otherwise, the inverter may be damaged.

Sungrow SG50CX Specifications

General

Max. DC Voltage	1100 V
MPPT Voltage Range	200 V - 1000 V
Max. Input Current per MPPT	26 A
Number of MPPTs	4
Rated AC Output Power	50 kW
Max. AC Output Current	76 A
Frequency	50 Hz / 60 Hz
Efficiency	98.6%
Start Voltage	200 V
Number of DC Inputs per MPPT	2
Max. AC Apparent Power	55 kVA
AC Voltage Range	310 V - 480 V
Power Factor at Rated Power	1
Adjustable Power Factor Range	0.8 leading - 0.8 lagging
THDi	< 3%
DC Switch	Yes
AC Surge Protection	Type II
DC Surge Protection	Type II
Protection Class	I
Cooling Method	Smart forced air cooling
Protection Degree	IP66
Protection Level	IP66
Operating Temperature Range	-25°C to +60°C
Humidity	0-100%
AC Output Voltage	3 / N / PE, 220 V / 380 V, 230 V / 400 V