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 certification
Communications:
• RS485/Ethernet interfaces
• Computer monitoring software
Safety:
·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 | |||
Power Factor (cos φ) | |||
SYSTEM | |||
Max. Efficiency | 97.3% | 97.3% | 97.3% |
Euro. Efficiency | 96% | 96.2% | 96.3% |
Protection Degree | |||
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 |
21kg | 21kg | 21kg |