1 1 Introduction Grounding and Electrical Infrastructure Grounding
- Slides: 11
1. 1 – Introduction Grounding and Electrical Infrastructure Grounding Implementation Workshop Lund, 29 th August 2018 Thomas Gahl - Group Leader Motion Control & Automation -
The three main pillars of grounding • Clean electrical power infrastructure – – No connections between equipment powered from different sub-stations Only one connection N-PE (at the substation) 5 wire cabling for instruments supply (TN-S system) Limited and easy to control connections between PE and PB (bonding network) • Isolation of installations (“zoning concept”) – (more details in the next talks) • Test & Measurement for verification – – Permanent mains analysis for each instrument Control of grounding currents Warning if values are changing Logging of events to be related to electrical problems 2
Grounding Triangle (functional) Isolation Electrical Power Test & Measurement 3
Grounding Triangle Electrical Safety, Marking, Procedures Zoning (today) (next workshop) Electrical Power (next workshop) Test & Measurement (next workshop) 4
Why zoning? 5
Why zoning? 6
Why zoning? 7
Why zoning? 8
Why zoning? • You don’t disconnect you from the world, but control your entrance 9
Thanks! 10
The grounding symbols (IEC 60417) https: //incomplia ncemag. com/artic le/the-groundingsymbols/ 11
Virtual loss of gm formula
Ungrounded system advantages
Grounding and bonding level 1 lesson 5
Arrl grounding and bonding
Electrical safety introduction
Electrical safety introduction
Lesson 5: introduction to electrical devices
Introduction to electrical power systems
Nccer introduction to electrical circuits
Job card grounding
Grounding transformers
Grounding system design
