4 Measured Quantities and Recording
4.3 Display of Measured Quantities
77
SICAM Q100, 7KG95xx, Device Manual
E50417-H1040-C522-A4, Edition 03.2018
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 13.2)
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