Earthing System for Direct Current Distribution Systems According to IEC 60364

 

Sample Earthing of DC Distribution System | Source: ABB


The Standard IEC 60364-1 defines the direct current and alternating current distribution systems analogously:


Related Article: Earthing System According to BS 7671


TT DC System

A terminal of the system and the exposed conductive parts are connected to two electrically independent grounding arrangements. If necessary, the middle point of the supply can be connected to the ground. 

TT DC System

TT DC system with the middle point of the supply connected to ground

A terminal or the middle point of the supply is directly grounded; the exposed-conductive parts are connected to the same grounded point. Three types of TN systems are defined according to whether the grounded terminal and the protective conductor are separated or not
TT DC system with the middle point of the supply connected to ground


TN-S DC System
The conductor of the terminal connected to the ground and the protective conductor Gnd are separated.


TN-S DC System



TN-S DC system with the middle point of the supply connected to ground 



TN-C DC System

The functions grounded terminal and protective conductor are partially combined in a single conductor called Ground.


TN-C DC System


TN-C DC distribution system with the middle point of the supply source connected to ground 

Related Article: 


TNC-S DC system

the functions of the grounded terminal and of the protective conductor are partially combined in a single conductor called GndN and partially separated.


TN-C-S DC distribution system 



TN-C-S DC distribution system with the middle point of the supply source connected to ground


IT DC System

TN-C-S DC distribution system with the middle point of the supply source connected to ground.

IT DC distribution system 


IT DC distribution system with the middle point of the supply isolated from ground


Source: 

  • ABB Circuit Breakers for Direct Current Applications | pp. 41- 44
  • Publisher: ABB
  • Download Here

1 comment:

  1. This was huge information for all ,those who needed these type article about test and tag melbourne for us . This was really good and of course knowledgeable. Thank you for sharing this much information with us

    ReplyDelete

Select Topics

electric protection Electrical Design power system protection Electrical Safety Fault Analysis Electrical Machines circuit breaker protective relaying electrical protection Electrical Equipment Technical Topics Electrical Installation BS7671 Power System short circuit analysis DC Circuit Earthing System power system analysis what Transformer Direct Current System Generator IEC standard Manual Resources Transmission Lines Unbalanced Fault Analysis electrical testing tutorial video Energy Efficiency ebook electrical motor how substation automation symmetrical components AC Machines Advance Circuit Theory IEC 60364 Renewable Energy Voltage Drop Calculation current transformer grid automation power system automation schneider electric smart grid Circuit Analysis electrical grounding fuse generator protection motor control power system stability quiz switchboard transformer protection ABB Manuals AC Circuit Busbar DC Machines GE Whitepapers Line to Line Fault National Electrical Code arc flash earth fault loop impedance electric vehicle electrical wiring power plant power system operation selective coordination switchgear video tutorial 3D printing AREVA AUS/NZ 3000 Assignment help Busway Current Nomenclatures Electricity Spot Market General Electric IEEE C37.2 IEEE/ANSI Device Numbers MiCom NFPA 70E Philippine Electrical Code Terms of use Theoretical ampacity battery building wiring capacitor circuit breaker curve cooling system cooper bussman disruptive technologies electrical earthing electrical harmonics energy industry engineering education iec 61850 inspection checklist learning protective bonding single line to ground fault transmission line protection voltage compensation voltage transformer voltage unbalance