Sizing and protection of conductors: Difference between revisions
From Electrical Installation Guide
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== [[General |General ]] == | __NOTOC__ | ||
== [[General|General ]] == | |||
==== Electric shock ==== | ==== Electric shock ==== | ||
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==== Protection against electric shock ==== | ==== Protection against electric shock ==== | ||
==== Direct and indirect contact ==== | ==== Direct and indirect contact ==== | ||
== [[Protection against direct contact |Protection against direct contact]] == | == [[Protection against direct contact|Protection against direct contact]] == | ||
==== Measures of protection against direct contact ==== | ==== Measures of protection against direct contact ==== | ||
==== Additional measure of protection against direct contact ==== | ==== Additional measure of protection against direct contact ==== | ||
== [[Protection against indirect contact |Protection against indirect contact]] == | == [[Protection against indirect contact|Protection against indirect contact]] == | ||
==== Measures of protection: two levels ==== | ==== Measures of protection: two levels ==== | ||
==== Automatic disconnection for TT system ==== | ==== Automatic disconnection for TT system ==== | ||
==== Automatic disconnection for TN systems ==== | ==== Automatic disconnection for TN systems ==== | ||
==== Automatic disconnection on a second fault in an IT system ==== | ==== Automatic disconnection on a second fault in an IT system ==== | ||
==== Measures of protection against direct or indirect contact without automatic disconnection of supply ==== | ==== Measures of protection against direct or indirect contact without automatic disconnection of supply ==== | ||
== [[Protection of goods in case of insulation fault |Protection of goods in case of insulation fault]] == | == [[Protection of goods in case of insulation fault|Protection of goods in case of insulation fault]] == | ||
==== Measures of protection against fire risk with RCDs ==== | ==== Measures of protection against fire risk with RCDs ==== | ||
==== Ground Fault Protection (GFP) ==== | ==== Ground Fault Protection (GFP) ==== | ||
== [[Implementation of the TT system|Implementation of the TT system]] == | == [[Implementation of the TT system|Implementation of the TT system]] == | ||
==== Protective measures ==== | ==== Protective measures ==== | ||
==== Coordination of residual current protective devices ==== | ==== Coordination of residual current protective devices ==== | ||
== [[Implementation of the TN system|Implementation of the TN system]] == | == [[Implementation of the TN system|Implementation of the TN system]] == | ||
==== Preliminary conditions ==== | ==== Preliminary conditions ==== | ||
==== Protection against indirect contact ==== | ==== Protection against indirect contact ==== | ||
==== High-sensitivity RCDs ==== | ==== High-sensitivity RCDs ==== | ||
==== Protection in high fire-risk locations ==== | ==== Protection in high fire-risk locations ==== | ||
==== When the fault current-loop impedance is particularly high ==== | ==== When the fault current-loop impedance is particularly high ==== | ||
== [[Implementation of the IT system |Implementation of the IT system]] == | == [[Implementation of the IT system|Implementation of the IT system]] == | ||
==== Preliminary conditions ==== | ==== Preliminary conditions ==== | ||
==== Protection against indirect contact ==== | ==== Protection against indirect contact ==== | ||
==== High-sensitivity RCDs ==== | ==== High-sensitivity RCDs ==== | ||
==== Protection in high fire-risk locations ==== | ==== Protection in high fire-risk locations ==== | ||
==== When the fault current-loop impedance is particularly high ==== | ==== When the fault current-loop impedance is particularly high ==== | ||
== [[Residual current differential devices (RCDs)|Residual current differential devices (RCDs)]] == | == [[Residual current differential devices (RCDs)|Residual current differential devices (RCDs)]] == | ||
==== Types of RCDs ==== | ==== Types of RCDs ==== | ||
==== Description ==== | ==== Description ==== | ||
==== Sensitivity of RDCs to disturbances <br> ==== | ==== Sensitivity of RDCs to disturbances <br> ==== |
Revision as of 06:16, 20 January 2010