Feb 12, 2009 #1 vreijb Electrical Joined Nov 22, 2006 Messages 38 Location CA What would be the size of the ferro resonance resistor for PT 100VA, with 4200/69/69 V. The plant is 7.2KV with high resistance grounding any assisstance is aprrecviated
What would be the size of the ferro resonance resistor for PT 100VA, with 4200/69/69 V. The plant is 7.2KV with high resistance grounding any assisstance is aprrecviated
Feb 17, 2009 Moderator #21 waross Electrical Joined Jan 7, 2006 Messages 28,771 Location CA Thank you David. Bill -------------------- "Why not the best?" Jimmy Carter Upvote 0 Downvote
Feb 18, 2009 Thread starter #22 vreijb Electrical Joined Nov 22, 2006 Messages 38 Location CA what about overvoltage factors 1.5 for 8H, 1.9 for 30min, and 1.2 cont. doesn't mean anything knowing we will trip in case of earth fault. Upvote 0 Downvote
what about overvoltage factors 1.5 for 8H, 1.9 for 30min, and 1.2 cont. doesn't mean anything knowing we will trip in case of earth fault.