MI 3325 MultiServicerXD
129
mA, 500 mA, 1000 mA]
Test
Test [-, L/PE, L1/PE, L2/PE, L3/PE]
RCD Standard
RCD standard selection [EN 61008 / EN 61009, IEC 60364-4-41 TN/IT, IEC
60364-4-41 TT, BS 7671, AS/NZS 3017]
Earthing System
Earthing system [TN/TT, IT]
Test limits
Limit Uc
Conventional touch voltage limit [12 V, 25 V, 50 V]
Test circuit
Figure 6.100: Connecting the Plug test cable or the 3-wire test lead
Test procedure
Enter the
RCD Uc
function.
Set test parameters / limits.
Connect test cables to the instrument.
Connect 3-wire test lead or Plug test cable to the object under test, see
Start the measurement.
Save results (optional).
The contact voltage result relates to the rated nominal residual current of the RCD and is
multiplied by an appropriate factor (depending on RCD type and type of test current). The 1.05
factor is applied to avoid negative tolerance of result. See
calculation factors.
RCD type
Contact voltage Uc proportional to
Rated I
N
AC
G
1.05
I
N
any
AC
S
2
1.05
I
N
A, F
G
1.4
1.05
I
N
30 mA
A, F
S
2
1.4
1.05
I
N
A, F
G
2
1.05
I
N
< 30 mA
A, F
S
2
2
1.05
I
N
B, B+
G
2
1.05
I
N
any
B, B+
S
2
2
1.05
I
N
Table 6.7: Relations between Uc and I
N
Fault Loop resistance is indicative and calculated from Uc result (without additional proportional
factors) according to:
𝑅
𝐿
=
𝑈
𝐶
𝐼
∆𝑁
.
