Siemens SICAM Q100 7KG95 Series - Measured Quantities and Operational Measurement Accuracy Acc. to IEC 61557-12

4 Measured Quantities and Recording
4.3 Display of Measured Quantities
80 SICAM Q100, 7KG95xx, Device Manual
E50417-H1040-C522-A6, Edition 06.2019
4.3.2 Measured Quantities and Operational Measurement Accuracy acc. to
IEC 61557-12
1)
Measurement from 2 % of the rated apparent power value onwards in the selected measuring range (see
chapter 14.2)
2)
The IEC 61557-12 standard does not specify any accuracy class for these variables. The specifications
refer to the maximum deviation from the actual value.
Table 4-20 Measured Quantities and their Operational Measurement Accuracy
Measured Quantity Unit Rated Value
Measurement
Range
Accuracy Class
Current I
Acc. to parameterization
A
Auto range (1 A
to 5 A)
10 % to 200 % I
rated
0.2
Current unbalance % -
0 % to 100 % I
rated
±0.2 %
2)
Active power P
+ demand, - supply
W - 1 % to 200 % I
rated
0.2
Reactive power Q
inductive, capacitive
var - 2 % to 200 % I
rated
1
Apparent power S VA - - 0.2
Power factor PF
1)
--
0.5 inductive to 0.8
capacitive
1
Active power factor cos 
1)
-- -1 to +1 ±1%
2)
Phase angle 
1)
Degree - -180° to +180° ±2°
2)
Active energy WP
+ demand, - supply
Wh - 1 % to 200 % I
rated
0.2
Class 0.2S acc. to
IEC 62053-22
Reactive energy WQ
inductive, capacitive
varh - 2 % to 200 % I
rated
2
Class 0.5S acc. to
IEC 62053-24
Apparent energy WS VAh - 2 % to 200 % I
rated
0.2
Subgroup total harmonics
distortion of voltage THDS V
ph
% - 0 % to 100 % ±0.5 %
2)
Subgroup total harmonics
distortion of current THDS I
ph
% - 0 % to 100 % ±0.5 %
2)
Harmonics of current H_xI
ph
A- -
Condition:
I
m
 10 % I
rated
Maximum error:
±5 % I
m
-------------------------------
Condition:
I
m
< 10 % I
rated
Maximum error:
±0.5 % I
rated
MAN_SICAM_Q100_US.book Page 80 Wednesday, June 5, 2019 9:31 AM