Sungrow SG20KTL User Manual

User Manual 6 Electrical Connection
37
Parallel Mode
In parallel mode, the PV inputs can be connected in parallel, with sharing the same
MPPT, as the following diagram shown. One pair of DC terminals in DC1 input and
DC2 input must be short-circuited.
To make sure the maximum DC power can be utilized; All PV strings
connected to inverter should have a homogenous structure, including
the same type, the same number, identical tilt and identical orientation.
Prior to connecting inverter to PV inputs, the following specifications should be met:
Type
Total DC Power
Limit for Inverter
Open-circuit
Voltage Limit for
Each Input
Short-circuit
Current Limit for
Total Input
SG10KTL 10800W 1000V 50A
SG12KTL 12800W 1000V 50A
SG15KTL 15800W 1000V 50A
SG20KTL 21000W 1000V 50A
There is a risk of inverter damage! The following requirements should be
met; otherwise they will lead to loss of any or all warranty rights.
y Make sure that the maximum short circuit current of each DC input is less
than the inverter allowable limit.
y Make sure that the maximum open voltage of each string is less than
1000V. Voltage over 1000V can damage the inverter.

Sungrow SG20KTL Specifications

General

Model	SG20KTL
Type	String Inverter
Rated Output Power	20 kW
Max. DC Input Power	30 kW
Max. DC Input Voltage	1100 V
Start Voltage	200 V
Number of MPPTs	2
Max DC Input Current per MPPT	26 A
Max. Input Current per MPPT	26 A
Rated AC Power	20 kW
Rated AC Voltage	400 V
AC Voltage Range	310 V - 480 V
Rated Grid Voltage	400 V
Rated Grid Frequency	50 Hz / 60 Hz
Total Harmonic Distortion	< 3%
Power Factor at Rated Power	1
Adjustable Power Factor Range	0.8 leading - 0.8 lagging
Max. Efficiency	98.6%
European Efficiency	98.4%
Efficiency	98.6%
DC Switch	Yes
Protection Class	IP65
Cooling Concept	Natural Cooling
Max. DC Power	22000 W
Max. AC Power	22 kW
Grid Frequency	50/60 Hz
Operating Temperature Range	-25 °C ~ +60 °C
Input Voltage Range	200 V - 1000 V