Sonel MPI-506 - Storage; Dismantling and disposal

MPI-506 – USER MANUAL
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Readings of fault loop impedance R
S
and fault loop reactance X
S
Display range
Resolution
Basic uncertainty
0…19.99 Ω
0.01 Ω
(6% + 10 digits) of Z
S
value
20.0…199.9 Ω
0.1 Ω
(6% + 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.
Display range
Resolution
Basic uncertainty
0.110…1.999 A
0.001 A
Calculated on the basis of
uncertainty for the fault loop
2.00…19.99 A
0.01 A
20.0…199.9 A
0.1 A
200…9999 A
1 A
 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.
10.1.5 Measurement of the RCD parameters
 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
RCD tripping test and t
A
tripping time measurement (for t
A
measurement function)
Measurement range according to IEC 61557: 10 ms … to the upper limit of displayed value
RCD type
Multiplication
factor setting
Measurement
range
Resolution
Basic uncertainty
general
0.5 I
n
0…300 ms
1 ms
±(2% m.v. + 2 digits)
1)
1 I
n
2 I
n
0…150 ms
5 I
n
0…40 ms
selective
0.5 I
n
0…500 ms
1 I
n
2 I
n
0…200 ms
5 I
n
0…150 ms
1)
for I
n
= 10 mA and 0.5 I
n
the uncertainty is ±(2% m.v. + 3 digits)
 Residual current feed accuracy:
for 1 I
n
, 2 I
n
and 5 I
n
........................................................................................................ 0…8%
for 0.5 I
n
............................................................................................................................ -8…0%