PV Grid Connected Inverters

PV Grid Connected Inverters 250KW

General Descriptions:SG250K3 is using low-frequency isolation transformer for protective purpose. Its wider input voltage range ensures more combinations of the PV arrays. Moreover, optical fiber isolation technology has been adopted to increase its anti-interference ability under the circumstances of multiple inverters installation. In addition, optimized circuit and structural design has improved system thermal efficiency which enhancing system reliability and stability. Reinforced protection functions, including the DC ground fault protection, make it the best product for large scale PV power plant.Technical Features: • Reactive Power Control with power factor from 0.9 lagging to 0.9 leading • German BDEW medium voltage guideline compliant • Max. efficiency at 97.3% • Easy Installation and maintanence • Multilingual touch screen monitoring and control interface • Suitable for harsh grid environment • Auxiliary heater (optional) • Max. working altitude at 6000m (operation with derating above 3000m) • High quality german brand enclosure • TÜV, CE, Enel-GUIDA certificationCommunications: •  RS485/Ethernet interfaces •  Computer monitoring softwareSafety: •  Full protection functions: over-voltage protection, short-circuit protection, islanding protection, over-heat protectionover-load protection, DC ground-fault 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, TÜV, Enel-GUIDA

Technical Specifications    

MODEL	SG250K3
DC SIDE DATA
Max. DC Voltage	900Vdc
Start Voltage	470V
MPP Voltage	450~820Vdc
Min. DC Voltage	450V
Max. DC Power	275kWp
Max. Input Current	600A
Recommend PV Array Open Circuit Voltage	700V
AC SIDE DATA
Rated Output Power	250kW
Max. AC Output Current	397A
Rated Grid Voltage	400Vac
Grid Voltage Range	310~450Vac
Rated Grid Frequency	50Hz/60Hz
Grid Frequency Range	47~51.5Hz/57~61.5Hz
Output Current THD	<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%(with transformer)
Euro Efficiency	96.7%(with transformer)
Protection Degree	IP20(indoor)
Power Consumption at Night	<100W
Operating Temperature	-25~+55°C
Cooling Method	controlled forced-air cooling
Relative Humidity	0~95%, non-condensing
Max. Working Altitude	6000m (operation with derating above 3000m)
DISPLAY AND COMMUNICATIONS
Display	touch screen LCD
Standard Comm. Interfaces	RS485
Optional Comm. Interfaces	Ethernet
MECHANICAL DATA
Dimensions(WxHxD)	1800x2180x850mm
Net Weight	2100kg