8 9
Table 2.1
Name of characteristic Item Note
Active energy accuracy class according
to IEC 62053-21:2003
1
Base (max.) current, А 5(60)
Nominal phase voltage (U
nom
), V
230
Operation phase voltage
from 0,75 to 1,15
U
nom
Nominal network frequency, Hz (50 ±2,5)
Measuring network current and voltage
non-sinusoidality ratio, %, not more than
5
Threshold sensitivity, mA 10
Apparent power consumed in current circuit,
not more than V*A
0,1
Apparent (active) power consumed in voltage circuit,
not more than V*A (W)
10,0 (2,0) Under the nominal voltage
Clock rate basic absolute error limit, sec/day ± 0,5
Manual clock rate correction, sec ± 29
Clock rate temperature complementary error limit,
sec/°С•day
±0,15 From minus 10 to 45 °С
±0,2 From minus 45 to 70 °С
Data storage without external supply voltage, years 30
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