1.  Structure of Photovoltaic Grid-Connected Inverters SG250K3 Description

SG630KTL 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.

2.  Main Features of the Photovoltaic Grid-Connected Inverters SG250K3

* Advanced Technology, Grid-friendly

• LVRT, HVRT and zero-voltage ride through to cope with various grid conditions

• SVG function at night, response to grid directives around the clock

• Reactive power control with power factor from 0.9 lagging to 0.9 leading

* More Compact, Saving Space for PV Plant

• Power density enhanced 50%, one of the central inverters with highest power density in the PV industry

• Save installation spaces and lower the plant initial cost

• Front maintenance, able to install against the wall, convenient installation and maintenance, saving operation cost of the PV plant.

* Efficient, More Yields

• Max. efficiency at 97.3% with transformer

• Efficient MPPT control strategy, improve power yields

• 28335 chips adopted, more accurate calculation, more power yields;

•  Intelligent speed regulation cooling concept, low consumption, high efficiency

* More Advantages

• Perfect protection and fault alarm system, safe and reliable

• User-friendly dynamic graphics LCD

• Redundant dual power supply solution improving the system reliability

• Efficient PWM algorithm, low consumption of switch

• Operate without power derating at -25℃ - +55℃

• Reliable and continues operation in high altitude environment

• Auxiliary heater (opt.)

• CGC certification, compliance with BDEW

3.  Photovoltaic Grid-Connected Inverters SG250K3 Images

4.  Photovoltaic Grid-Connected Inverters SG250K3 Specification

5.  FAQ of Photovoltaic Grid-Connected Inverters SG250K3

Q1. What is the difference between inverter and solar inverter?

A1. Inverter only has AC inpput, but solar inverter both connect to AC input and solar panel, it saves more power.

Q2. What is the difference between MPPT&PWM?

A2. MPPT has higher efficiency, it can track the max power point and won't waste energy.