Contact with body / purpose of the protective conductor / switch-off times / historical developments
Part 4 of the series "Network systems / fuses / RCD (FI circuit breaker)"
What is a body and a body closure? Why are protective conductors used? Which switch-off times have to be observed? Why are there old systems with and without RCD?
Fault protection with the help of fuses in the event of a complete shock to the body.
00:00 introduction
00:47 Body closure and body
01:39 Example of bodies
03:39 Equipment on the network
04:32 The protective insulation of the hair dryer (double or reinforced insulation)
06:21 Complete contact with the body without a protective conductor
08:16 Automatic shutdown and shutdown times
09:12 Automatic shutdown by fuses or RCD?
10:10 Historical development of the automatic shutdown
11:37 The historical use of RCDs in TT and TN-C-S systems
13:13 The need for the protective conductor
14:53 Estimation of the current strength at complete body contact
15:18 Why is the shutdown time not observed in the TT system?
16:27 The task of the protective conductor
17:27 Preview of the next video
#FaultProtection
#BodyClosure
#Switch-offTimes