![WindGuard Certification and Langer E-Technik provide retrofit for FRT test device WindGuard Certification provides retrofit for FRT test device](/images/stories/News/News2022/WindGuard_Certification_provides_retrofit_for_FRT_test_device.jpg)
The test equipment enables low voltage and high voltage ride-through (LVRT and HVRT) tests to prove dynamic grid support according to current guidelines such as FGW TR 3 and IEC 61400-21-1 as well as international standards. For this purpose, fault conditions in the public grid are simulated, and the behaviour of the power generating unit is documented. WindGuard Certification and Langer E-Technik have accommodated the entire equipment for performing Fault-Ride-Through (FRT) tests on power generating units in one 40’ container.