METREL MI 3399, Instruction Manual With Exercises

Page: 242 / 272

PAT Appliances & Machines Safety Trainer AD 3
– MI 3399
242
5.4 Portable appliance of class 1
– IEC cord
Simulates Error value Error off Error on
Simulation between contacts
Measurement
taken
Error off Error on
Error 1
Loose contact of PE conductor Error value
0,02 Ω 0,84 Ω
PE pin on socket (1) and PE pin
on socket (2)
Earth Bond
0,02 Ω 0,84 Ω
Error 2
Insulation fault Error value
>20 MΩ 106 kΩ
L and PE pins on socket (2)
Insulation 500 V
DC
>20 MΩ 0,106 MΩ
Error 3
Crossed L and N wire Polarity /
L, N
crossed
Polarity
Polarity /
“L, N
crossed”
Table 5-3: Description of simulated faults / relevant tests
Note:
For safety reasons there is a serial resistance between L/N pins of socket 1 and socket
2. Some test instruments can therefore return a fail on the Polarity test!