Sonel MPI-540 - Technical Data; Basic Data; Measurement of Alternating Voltages (True RMS); Frequency Measurement

MPI-540 – USER MANUAL
171
10 Technical data
10.1 Basic data
 Abbreviation "m.v." used in the specification of basic uncertainty means standard measured value
10.1.1 Measurement of alternating voltages (True RMS)
Range
Resolution
Basic uncertainty
0.0 V...299.9 V
0.1 V
(2% m.v. + 4 digits)
300 V…500 V
1 V
(2% m.v. + 2 digits)
 Frequency range: 45...65 Hz
10.1.2 Frequency measurement
Range
Resolution
Basic uncertainty
45.0 Hz...65.0 Hz
0.1 Hz
(0.1% m.v. + 1 digit)
 Voltage range: 50 ... 500V
10.1.3 Measurement of fault loop impedance Z
L-PE
, Z
L-N
, Z
L-L
Measurement of fault loop impedance Z
S
Test range according to IEC 61557-3:
Test lead
Test range Z
S
1.2 m
0.130...1999.9 Ω
5 m
0.170...1999.9 Ω
10 m
0.210...1999.9 Ω
20 m
0.290 ...1999.9 Ω
WS-03, WS-04
0.190...1999.9 Ω
Display range:
Display range
Resolution
Basic uncertainty
0.000...19.999 Ω
0.001 Ω
(5% m.v. + 0.03 Ω)
20.00...199.99 Ω
0.01 Ω
(5% m.v. + 0.3 Ω)
200.0...1999.9 Ω
0.1 Ω
(5% m.v. + 3 Ω)
 Rated operating voltage U
nL-N
/ U
nL-L
: 110/190 V, 115/200 V, 127/220 V, 220/380 V,
230/400 V, 240/415 V
 Operating voltage range: 95 V…270 V (for Z
L-PE
and Z
L-N
) and 95 V…440 V (for Z
L-L
)
 Rated mains frequency f
n
: 50 Hz, 60 Hz
 Operating frequency range: 45 Hz…65 Hz
 Maximum test current (for 415 V): 41.5 A (10 ms)
 Control of correctness of PE terminal connection by means of a touch electrode
Indications of fault loop resistance R
S
and fault loop reactance X
S
Display range
Resolution
Basic uncertainty
0...19.999 Ω
0.001 Ω
(5% + 0.05 Ω of Z
S

 Calculated and displayed for Z
S
< 20 Ω