TT earthing systems & protection against over voltage

by frambo5
Tags: earthing, protection, systems, voltage
frambo5 is offline
Nov22-11, 12:03 PM
P: 1
in a TT earthing system the earth fault loop impedence is high why ? do u need an RCD as well employed with a TT earthing system so as to cut the disconection time down?

In protection against overvoltage & undervoltage where is the contractor coil situated in the transformer or in the consumer unit (if thats how protection is provided)? ( i feel kinda retarded asking this question)
Phys.Org News Partner Engineering news on
PsiKick's batteryless sensors poised for coming 'Internet of things'
Researcher launches successful tech start-up to help the blind
Researchers propose network-based evaluation tool to assess relief operations feasibility

Register to reply

Related Discussions
Earthing & Lightening Protection for a Home on a Mountain Top Electrical Engineering 9
How Transmission Lines Transposition could affect Protection systems? Electrical Engineering 5
High Impedance Earthing - unearthed (IT) systems Engineering, Comp Sci, & Technology Homework 0
High Impedance Earthing - IT/Floating earth systems Electrical Engineering 0