Accuracy; Measured Value Transmission Frequency - Siemens Sentron 7KN POWERCENTER 1000 Manual

Functions
6.1 Recorded measured values and storage
6.1.2

Accuracy

The accuracy and measuring range of the individual measured values with a reference
temperature of 23°C are described as follows:
Measured value
Temperature
Current
Voltage
Line frequency
Power values
Power factor
Energy
Reference temperature here 25°C
1)
6.1.3

Measured value transmission frequency

The measured values are transmitted to the 7KN Powercenter 1000 in different frequencies.
This leads to the fact that not every measured value is updated equally as fast as in the
software.
The following measured values are transmitted every x seconds:
• Temperature: 2 s
• Temperature mean value: 60 s
• Current: 2 s
• Current mean value: 3 s
• Current maximum value: 60 s
• Voltage: 60 s
• Mains frequency: 60 s
• Active, reactive and apparent power: 2 s
• Power factor: 60 s
• Active and reactive energy: 60 s
• Operating hours counter with/without load current: 60 s
• Operating cycles counter: 10 s
• Counter for tripping operations: 60 s
54
5ST3 COM
±2°C from -2°C ... 100°C
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5SL6 COM and 5SV6 COM
±2.5°C from -25°C ... 100°C
0.5 % of 0.02 ... 2 x I
n
0.5% at U and
n
1% of 0.9 ... 1.1 x U
n
0.5% of 45 Hz ... 60 Hz
1% at 0.9 ... 1.1 x I and U
n
±0.1 of -1 ... 1
1% at 0.9 ... 1.1 x I and U
n
Circuit protection devices with communication and metering function
System Manual, 06/2021, L1V30827018B-01
3NA COM
±2.5°C from +20°C ... 120°C
1% of 2.5 A ... 8 A and
2% of 8 A ... 440 A
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--
n
--
--
n
1)