Sonel MPI-520 - 12 Positions of the meters cover; 13 Manufacturer

MPI-520 OPERATING MANUAL version 3.4
64
Additional uncertainty caused by resistance of electrodes:
 
%105,1
004,0
150
100000
28














H
E
H
S
S
dod
R
R
R
R
R

R
S
< 5 k
 
%105,1
004,0
5,7
28












H
E
H
dod
R
R
R

R
S
≥ 5 k
Resistance of voltage electrode Rs[Ω]
10.2.5 Additional uncertainties according to IEC 61557-6 (RCD)
I
A
, t
A
, U
B
Significant parameter
Designation
Additional uncertainty
Position
E
1
0%
Supply voltage
E
2
0% (BAT is not lit)
Temperature 0...35°C
E
3
0%
Resistance of electrodes
E
5
0%
Network voltage 85%..110%
E
8
0%
Additional error ca
used by resistance of electrodes [%]
R
H
Current electrode resistance
R
E
Resistance to earth
=