MPI-506 – USER MANUAL
Display ranges:
Rated operating voltage U
nL-N
/ U
nL-L
: 220/380 V, 230/400 V, 240/415 V
Voltage operating range: 180…270 V (for Z
L-PE
and Z
L-N
) and 180…460 V (for Z
L-L
)
Mains rated frequency f
n
: 50 Hz, 60 Hz
Frequency operating range: 45…65 Hz
Maximum test current: 7.6 A for 230 V (4x10 ms), 13.3 A for 400 V (4x10 ms)
Check of PE terminal connection correctness with the contact electrode (for Z
L-PE
)
Readings of fault loop impedance R
S
and fault loop reactance X
S
(5% + 5 digits) of Z
S
value
(5% + 5 digits) of Z
S
value
Calculated and displayed values Z
S
<200 Ω
Readings of short-circuit current I
K
Measurement ranges according to IEC 61557 can be calculated from the measurement ranges Z
S
and rated voltages.
Calculated on the basis of
uncertainty for the fault loop
Prospective fault current calculated and displayed by the meter may slightly differ from the val-
ue calculated by the user with a calculator, basing on the displayed value of the impedance,
because the meter calculates the current from unrounded value of fault loop impedance (which
is used for displaying). As the correct value, consider I
k
current value, displayed by the meter or
by firmware.
10.1.4 Z
L-PE
fault loop impedance measurement RCD (without tripping the RCD)
Z
S
fault loop impedance measurement
Measurement range according to IEC 61557: 0.5…1999 Ω for the 1.2 m leads, WS-03 and WS-04,
and 0.51…1999Ω for the 5 m, 10 m and 20 m leads
Does not trip the RCD’s with I
Δn
≥ 30 mA
Rated operating voltage U
n
: 220 V, 230 V, 240 V
Voltage operating range: 180…270 V
Mains rated frequency f
n
: 50 Hz, 60 Hz
Frequency operating range: 45…65 Hz
Check of PE terminal connection correctness with the contact electrode