Sungrow SG20RT User Manual

32
figure 5-2 Label of COM2 Terminal
table 5-2 Label Description of COM2 Terminal
Label
Description
RSD
RSD-1,
RSD-2
For inverter emergency stop
NS
NS-1, NS-2
For inverter emergency stop
DRM
D1/5, D2/6,
D3/7, D4/8,
R, C
For external Demand Response Enabling Device ("AU"/
"NZ")
For Ripple Control
RS485-1
A1, B1
For inverter daisy chain
(Cannot be used simultaneously with COM1 port for WiNet-
S/WiNet-S2)
DO
NO, COM
External alarm interface, e.g. light indicator and/or buzzer
The external DC voltage should not be higher than 30 V and
the current not higher than 1 A.
RS485-3
A3, B3
Reserved
Meter
A2, B2
Smart energy meter interface
*
* In case communication failure occurs to the meter as a result of adopting a longer commu-
nication cable, you may connect a 120Ω resistor in parallel across ports A and B of the meter
to resolve this issue.
5.3 Electrical Connection Overview
The SG3.0-20RT electrical connection should be realized as follows:
5 Electrical Connection User Manual

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