KSTAR the GSL series of 500KW PV grid inverter solar power research and development (experimental) of the National Energy Center in State Grid Electric Power Research Institute passed the low voltage ride through (LVRT) full-function tests, and obtain the relevant test reports.

The testing and certification sheet the GSL series Minco Roth 500KW PV Grid inverter is in full compliance with the national electricity grid photovoltaic power plants connected to the grid technical requirements "stringent requirements for low voltage of the photovoltaic power plants across the function. Previously, GSL Series 500KW photovoltaic grid-connected inverter has achieved TUV and other international certification.

The certification authority - National Energy solar power research and development (experimental) center is responsible for all the tests. Test in strict accordance with the national grid photovoltaic power plants connected to the grid technical requirements and photovoltaic power plants connected to the grid test procedures ", including the three-phase equilibrium drop, two-phase and single-phase imbalance drop test, the frequency response characteristics test abnormalities (disturbances) functional items.

KSTAR in each test the GSL series of 500KW photovoltaic grid-connected inverter with charger showed good performance. The low voltage ride through (LVRT) refers to the grid voltage drop occurs in the case of the photovoltaic inverter can be kept in certain conditions and the time range and the grid, until the grid is returned to normal.

Low voltage ride through technology is to increase the maximum protection of the security and stability of the grid system, If the PV inverter the LVRT function will increase the difficulty of the recovery of the entire system, and even bring additional disturbance to the already unbalanced grid may lead the risk of system instability.

Currently, LVRT has become an important technical requirements of solar photovoltaic solar inverter and wind power industry worldwide. 2011 in Germany, Spain and other countries have been listed as a mandatory requirement. In August 2011, China also mandating this feature.

Passed the test table Minco Roth the GSL series of 500KW high-power three-phase photovoltaic grid-connected inverter in full compliance with the the national grid photovoltaic power plants connected to the grid technical requirements "of the strict requirements of the photovoltaic power plant, will be of great efforts to develop solar power grid technology applications to provide strong support.