F
Schneider Electric - Electrical installation guide 2009
© Schneider Electric - all rights reserved
Chapter F
Protection against electric shocks
Contents
General
F2
1.1 Electric shock
F2
1.2 Protection against electric shock
F3
1.3 Direct and indirect contact
F3
Protection against direct contact
F4
2.1 Measures of protection against direct contact
F4
2.2 Additional measure of protection against direct contact
F6
Protection against indirect contact
F6
3.1 Measures of protection: two levels
F6
3.2 Automatic disconnection for TT system
F7
3.3 Automatic disconnection for TN systems
F8
3.4 Automatic disconnection on a second fault in an IT system
F10
3.5 Measures of protection against direct or indirect contact
without automatic disconnection of supply
F13
Protection of goods in case of insulation fault
F7
4.1 Measures of protection against fire risk with RCDs
F17
4.2 Ground Fault Protection (GFP)
F17
Implementation of the TT system
F9
5.1 Protective measures
F19
5.2 Coordination of residual current protective devices
F20
Implementation of the TN system
F23
6.1 Preliminary conditions
F23
6.2 Protection against indirect contact
F23
6.3 High-sensitivity RCDs
F27
6.4 Protection in high fire-risk locations
F28
6.5 When the fault current-loop impedance is particularly high
F28
Implementation of the IT system
F29
7.1 Preliminary conditions
F29
7.2 Protection against indirect contact
F30
7.3 High-sensitivity RCDs
F34
7.4 Protection in high fire-risk locations
F35
7.5 When the fault current-loop impedance is particularly high
F35
Residual current differential devices (RCDs)
F36
8.1 Types of RCDs
F36
8.2 Description
F36
8.3 Sensitivity of RDCs to disturbances
F39
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Schneider Electric - Electrical installation guide 2009
F - Protection against electric shock
F2
© Schneider Electric - all rights reserved
General
. Electric shock
An electric shock is the