MPI-520 OPERATING MANUAL version 3.4
Measurement of short circuit loop impedance Z
L-PE
RCD (without triggering of RCD)
Measurement of short circuit loop impedance Z
S
Test range according to IEC 61557: 0.50…1999 for 1.2 m, WS-03 and WS-04 leads and
0.51...1999 for 5 m, 10 m and 20 m leads
It does not cause triggering of RCD of I
Δn
≥ 30 mA
Nominal working voltage U
n
: 110 V, 115 V, 127 V, 220 V, 230 V, 240 V
Working range of voltage: 95…270 V
Nominal network frequency f
n
: 50 Hz, 60 Hz
Working range of frequency: 45…65 Hz
Control of correctness of PE terminal connection by means of a touch electrode
Indications of short circuit loop resistance R
S
and short circuit loop reactance X
S
(6% + 10 digits) of Z
S
val-
ue
Calculated and displayed for a value of Z
S
<20
Indications of short-circuit current I
K
Test range according to IEC 61557 can be calculated on the basis of test ranges for Z
S
and nominal
voltages.
Calculated on the basis of
uncertainty for fault loop
Measurement of parameters of RCD
Nominal working voltage U
n
: 110 V, 115 V, 127 V, 220 V, 230 V, 240 V
Working range of voltage: 95…270 V
Nominal network frequency f
n
: 50 Hz, 60 Hz
Working range of frequency: 45…65 Hz