Question

Transformerless Photovoltaic Inverters [Total marks-10 Consider the transformerless inverter SB5000TL (which you encountered in the ENG421 laboratory session) being connected to the 4.5kWp array on Building 190, where all exposed conductive parts of the array are bonded together, but are left path hand to hand) touches the PV array frame with one hand and is well connected to (a) Sketch a circuit diagram modelling the scenario and estimate the range of leakage currents the person can be exposed to in this scenario. List your assumptions. (5 marks) (b) List factors which influence the magnitude of the leakage current. (2.5 marks) (e) Discuss leakage currents in this scenario with regards to perception threshold, safety and earthing in transformerless PV systems. (2.5 marks)

Answer 1

190ド ghound țieight 186 A B 186 orhon p