Sungrow SG20RT User Manual

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The external protective grounding terminal must meet at least one of the following
requirements.
• The cross-sectional area of the grounding cable is not less than 10 mm
2
for cop-
per wire or 16 mm
2
for aluminum wire. It is recommended that both the external
protective grounding terminal and the AC side grounding terminal be reliably
grounded.
• If the cross-sectional area of the grounding cable is less than 10 mm
2
for copper
wire or 16 mm
2
for aluminum wire, ensure that both the external protective
grounding terminal and the AC side grounding terminal are reliably grounded.
The grounding connection can be made by other means if they are in accordance
with the local standards and regulations, and SUNGROW shall not be held liable
for the possible consequences.
5.4.1 External Protective Grounding Requirements
All non-current carrying metal parts and device enclosures in the PV power system should
be grounded, for example, brackets of PV modules and inverter enclosure.
When there is only one inverter in the PV system, connect the external protective grounding
cable to a nearby grounding point.
When there are multiple inverters in the PV system, connect the external protective ground-
ing terminals of all inverters and the grounding points of the PV module brackets to ensure
equipotential connections to ground cables (according to the onsite conditions).
5.4.2 Connection Procedure
External grounding cable and OT/DT terminal are prepared by customers.
step 1 Prepare the cable and OT/DT terminal.
User Manual 5 Electrical Connection

Sungrow SG20RT Specifications

General

Model	SG20RT
Category	Inverter
Max. DC Voltage	1100 V
Rated AC Power Output	20 kW
Max. Efficiency	98.6%
Max. DC Input Power	30 kW
Max. Input Voltage	1100 V
Start Voltage	200 V
Number of MPPTs	2
Number of DC Inputs per MPPT	2
Max. AC Apparent Power	22 kVA
Rated Grid Frequency	50 Hz / 60 Hz
Max. Output Current	32 A
Power Factor at Rated Power	>0.99
THDi	<3%
DC Switch	Yes
Protection Class	IP65
Cooling Method	Natural Convection
Protection Degree	IP65
Protection Level	IP65
MPPT Voltage Range	200 V - 1000 V
Operating Temperature Range	-25°C to +60°C
Input Voltage Range	200 V - 1000 V
MPPT Range	200 V - 1000 V
AC Voltage Range	310 V - 480 V