METREL MI 3300, Instruction Manual

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MI 3300 PAT Demoboard Demonstration tables information
16
5.9. Low voltage switchgear
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 0,41 Ω
PE input connection (1) and earthed metal part (2) Earth Bond
0,02 Ω 0,41 Ω
Error 2
Insulation fault Error value
>20 MΩ 1.88 MΩ
L, (2) and PE connection (3)
Insulation 1000 V DC
>20 MΩ 1.880 M Ω
Withstanding 2500 V AC 0,1 mA 1,4 mA
Error 3
Excessive charge on filter capacitors Error value
4.7nF
100MΩ 100nF
100MΩ
L and N on input connections (2) Discharging time* cca 0,4 s cca 9 s
Table 5.8: Description of simulated faults / relevant tests
* Measured with CE Multitester (resistance of measuring cir
cuit 40MΩ). Discharging times for other
test instruments can vary, depending on their internal resistance.