Energomera CE208 - ANNEX A Permissible error limits

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ANNEX A
(required)
The permissible error limits of the measured values
A.1 The limits of the permissible basic relative error when measuring the root-mean-square values of current δI ,
in percent, do not exceed the values shown in Table A.1.
Table А.1
Current value for meters
Limits of permissible basic error δI, %, for active/
reactive energy accuracy class meters
with direct connection 1/1 1/2
0,05 I
b ≤ I ≤ Imax ± 1,0 ± 1,0
A.2 The limits of the permissible basic relative error when measuring the root-mean-square values of phase
voltage δ U, in percent, do not exceed the values shown in Table A.2.
Table А.2
Voltage value
Limits of the permissible basic error δ
U, %,
for accuracy class meters
1/1 1/2
0,55 U
NOM ≤ U ≤ 1,21 UNOM ± 0,5 ± 0,5