Welcomed to Testing & Commissioning world
😍🙋♂️
اعز واغلى الصور على قلبى لانها الخطوة اللى ياما حلمت بيها وتعبت بيها وعشانها وعلى امل اوصل لاعلى ليڤل فيها.
دعواتكم باخلاص 🙏
@OsamaAb84630772 In delta connected winding, there is no zero sequence however the current circulates inside delta phase windings & doesn't appear on line terminals.
@OsamaAb84630772 Grounding Transformers are used to generate or create artificial grounding (low impedance path to ground) at delta connected winding and/ or after loaded tertiary. In order to limit the fault current, NER (neutral earthing resistor) or NGR (neutral grounding reactor) are used.