7
7) External reference frequency electromagnetic interference: Should
be avoided
2. Limits of Intrinsic Error
1) AC Voltage
(
see Table 1
)
Table 1
:
Error of AC Voltage
Measure range
Resolution
Limits of intrinsic error
20V
0.01V
±
(
1.2%RD+2
)
200V
0.1V
±
(
1.0%RD+2
)
500V
1V
±
(
1.2%RD+2
)
Input Impedance
:
All measure ranges input 2MΩ
2)AC current
(
see Table 2
)
Table 2
:
Error of AC current
Measure range
Resolution
Limits of intrinsic error
200mA
0.1mA
±
(
1.0%RD+2
)
2A
1mA
10A
10mA
3) Phase
U-U
、
U-I
、
I-I
(
see Table 3
)
Table 3
:
Error of Power-frequency Phase
Range
Resolution
Limits of intrinsic error
0
~
360°
1°
±3°
Loop impedance of input voltage when measuring phase U1-U2
:
40KΩ
III. Operating Error
1. Rated Operating Conditions
1) Temperature:
(
0
~
40
)℃
2) Relative humidity:
(
20
~
80
)
%
3) Wave forms of measured signal: Sine wave, β=0.05
4) Frequency of measured signal:
(
50±0.5
)
Hz
Содержание SMG2000B
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