Benning IT 120 B 044102 Manual De Usuario

75

fault loop resistance

both fault loops, R1 (L1-PE) and R2 (L2-PE)

prospective fault current

I

SC1

 and I

SC2

 for both fault loops

symbols adapted to a power supply network with lower 
voltage

automatic recognition of three-phase mains

contact voltage U

c

for both options, U1 (L1-PE) and U2 (L2-PE)

tripping time

maximum nominal differential current is limited to 1 A

tripping current

automatic testing

independent of the selected power supply network

deactivated

Displayed results for a single-phase system:
L1-L2  voltage between external conductors,
L1-PE  voltage between external conductor 1 and protective conductor,
L2-PE  voltage between external conductor 2 and protective conductor.

The normal maximum FI/RCD testing current is 1 A RMS (peak current 1.4 A) and can only be 

reached, if the fault loop resistance is below 1 Ω.

Tests are carried out automatically for both combinations (L1-PE and L2-PE).
For each individual test result, the corresponding indication is shown.

The measured resistance represents the phase-to-phase resistance (R

L1-L2

). The nominal voltage 

for calculating I

PSC

 is set to 110 V.

The nominal voltage range for measuring the line resistance is 90 V to 121 V. If the input voltage 
is outside this range, this is displayed on the online voltage/ terminal monitor together with the   
symbol.