1 Survey measures for protection against indirect contact
5.2).2.1 Classification electrical and electronic equipment with regard to
protection against electric shock the event insulation fault
This classification provided for low-voltage electrical and electronic equipment intended
for connection external power supply (to distribution system). The classification is
elaborated with regard protection against electric shock the event insulation failure.
with protective conductor without protective conductor
protection against indirect contact
protection automatic
disconnection supply
without disconnecting or
monitoring
application in
− system
for the first fault only
application in
− system
− system
− system
for the second fault
continuous monitoring the
insulation conditions
monitoring device
− insulation monitoring
device
protectiv devices for
automatic disconnection
− overcurrent protective
devices
− residual-current
protective devices
protection by
− Class equipment by
equivalent insulation
− non-conducting location
− earth free local
equipotential bonding
.2.2.FUNDAMENTAL RULES FOR PROTECTION AGAINST ELECTRIC SHOCK 35
Table 5.
According this classification, the protection may provided the environment, the
equipment itself the system supply (see Table 5
