Rcd Testing - METREL EurotestDL Instructions Manual

Measurements

3.5 RCD testing

1
Set function
4
Connection diagram
Ro R
E
TEST
5
Press the
6
View results
Displayed results:
U : Contact voltage
C
R : Fault loop resistance
L
Lim: High limit fault loop
resistance
2
Set sub-function
Contact voltage
Tripping time
Tripping current
RCD autotest
key.
Displayed results:
t: Tripping time
U : Contact voltage
C
3
Set parameters and limits
Limit contact voltage [25V,
50V]
Nominal differential RCD
tripping current
[10 mA ÷ 1000 mA]
Multiplier of nominal
differential RCD tripping
current [×½, ×1, ×2, ×5]
Test current starting polarity
G,
and RCD type [
G, S, S,
G, S, S]
Displayed results:
I : Tripping current
Δ
U : Contact voltage
CI
tI: Tripping time
9
RCD testing
G,
L1
L2
L3
N
PE
N PE L
Displayed results:
U : Contact voltage
C
t1-t6: Tripping times