String Inverters

String Inverters

General Descriptions:SG2K5TL/3KTL/4KTL-31 is a transformerless inverter with higher efficiency. Its aluminum housing makes it very compact, robust and light in weight. The direct plug-in terminal port provides easy, safe and reliable cable connection under any circumstances. It can be used for string-connected outdoor small PV power station, or individually for a small house.Technical Features:• Max. efficiency at 97.3%• Weather-proof design (IP65) for harshest working environment• Easy-setting multilingual LCD display panel• High reliability with full protective functions• Water-proof direct plug-in terminals• TÜV, Enel-GUIDA, AS4777, G83/1, G59/2 certificationCommunications:• RS485/Ethernet interfaces• Computer monitoring softwareSafety:·Full protection functions: over-voltage protection, short-circuit protection, islanding protection, over-   heat protection, over-load protection·Standards complied: EN61000-6-1, EN61000-6-2, EN61000-6-3, EN61000-6-4,EN61000-3-2, EN61000-3-3, EN60164-1-1, EN55022, EN50178 

Technical Specifications:

DC SIDE DATA
Model	SG2K5TL-31	SG3KTL-31	SG4KTL-31
Max. DC Voltage	500Vdc	500Vdc	500Vdc
Start Voltage	170V	170V	170V
MPP Voltage	180~420V	180~400V	210~400V
Min. DC Voltage	150V	150V	150V
Max. DC Power	2800Wp	3300Wp	4400Wp
Max. Input Current	15A	18A	20A
Recommend PV Array Open Circuit Voltage	400V	400V	400V
Number of MPP Trackers/Strings Per MPP Tracker	1/3	1/3	1/3
AC SIDE DATA
Rated Output Power	2500W	3000W	4000W
Max. AC Output Current	12A	15A	20A
Rated Grid Voltage	230Vac	230Vac	230Vac
Grid Voltage Range	180~276Vac	180~276Vac	180~276Vac
Rated Grid Frequency	50Hz/60Hz	50Hz/60Hz	50Hz/60Hz
Grid Frequency Range	47~52Hz/57~62Hz	47~52Hz/57~62Hz	47~52Hz/57~62Hz
Output Current THD	< 3% (at nominal power)	< 3% (at nominal power)	<3% (at nominal power)
DC Current Injection	<0.5% of rated inverter output current
Power Factor (cos φ)	0.9(lagging)~0.9(leading)
SYSTEM
Max. Efficiency	97.3%	97.3%	97.3%
Euro. Efficiency	96%	96.2%	96.3%
Protection Degree	IP65 (outdoor)	IP65 (outdoor)	IP65 (outdoor)
Power Consumption at Night	0W	0W	0W
Operating Temperature	-25~+60°C	-25~+60°C	-25~+60°C
Cooling Method	natural cooling	natural cooling	controlled forced-air cooling
Relative Humidity	0~95%, non-condensing	0~95%, non-condensing	0~95%, non-condensing
Max. Working Altitude	2000m	2000m	2000m
DISPLAY AND COMMUNICATIONS
Display	LCD	LCD	LCD
Standard Comm. Interfaces	RS485	RS485	RS485
Optional Comm. Interfaces	Ethernet	Ethernet	Ethernet
MECHANICAL DATA
Dimensions(WxHxD)	415x530x176mm	415x530x176mm	415x530x176mm
Net Weight	21kg	21kg	21kg

String Inverters