Additional Data; Additional Uncertainties According To Iec 61557-3 (Z) - Sonel MZC-305 Operation Manual

Short-circuit current I
Test range according to IEC 61557 can be calculated on the basis of test ranges Z
voltages.
Display range
0.055 ... 1.999 A
2.00 ... 19.99 A
20.0...199.9A
200...1999A
2.00 ... 19.99 kA
20.0 ... 40.0 kA

Prospective fault current calculated and displayed by the meter may slightly differ from the
value 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
by firmware.
Other technical specification
a) type of insulation .................................................... double, EN 61010-1 and IEC 61557 compliant
b) measurement category ...................................................... IV 600V (III 1000V) acc. to EN 61010-1
c) degree of protection of enclosure acc. to EN 60529 ................................................................. IP54
d) meter power supply .................. alkaline batteries or NiMH rechargeable batteries, size AA (4 pcs)
e) dimensions ............................................................................................................ 260x190x60 mm
f) meter weight ................................................................................................................. about 2.2 kg
g) storage temperature ..................................................................................................... –20...+60C
h) operating temperature ..................................................................................................... 0....+45C
i) humidity ............................................................................................................................. 20...80%
reference temperature ..................................................................................................... +23 ± 2C
j)
k) reference humidity ............................................................................................................. 40...60%
l) altitude (above sea level) ................................................................................................... <2000 m
m) Time to Auto-OFF ....................................................................................................... 120 seconds
n) number of Z measurements (for alkaline batteries)................. >3000 (2 measurements per minute)
o) display .......................................................................................................................LCD segment
p) memory of measurement results ................................................................. 990 cells, 3500 entries
q) data transmission .................................................................................................................... USB
r) quality standard .................................... quality, design and manufacturing are ISO 9001 compliant
s) the device meets the requirements of the IEC 61557 standard
t) the product meets the EMC requirements (immunity for industrial environment) according to the
following standards ........................................................ EN 61326-1:2006 and EN 61326-2-2:2006
9.2

Additional data

Data on additional uncertainties are useful mainly when the meter is used in non-standard
conditions and for metrological laboratories for the purpose of calibration.
9.2.1

Additional uncertainties according to IEC 61557-3 (Z)

Significant parameter
Position
Supply voltage
Temperature 0...35°C
32
K
OPERATING MANUAL MZC-305 version 1.08
Resolution
0.001 A
0.01 A
0.1 A
1 A
0.01 kA
0.1 kA
current value, displayed by the meter or
k
Designation
E
1
E
2
E
3
WS-01, WS-05 lead – 0.015Ω
Measurement uncertainty
Calculated on the basis of
uncertainty for fault loop
Additional uncertainty
0%
0% (BAT is not lit)
1,2 m lead – 0Ω
5 m lead – 0.011Ω
10 m lead – 0.019Ω
20 m lead – 0.035Ω
and rated
S