Any power system model has its limitations and the type of the model to be selected and implemented for study purposes can vary depending on the type of system dynamics/ phenomena to be studied.The published technical brochure TB727 provides guidance on inverter-based generator models (with the focus on PhotoVoltaics) with associated functions that should be used for specific phenomena such as frequency deviation, large voltage deviation, and long-term voltage deviation. This guideline helps to reduce the computational burden when performing simulations as well as to represent a more accurate power system dynamic behaviour with inverter-based generators following faults.The downloaded document includes on the first page the link to the video, and the complete presentation in PDF format.