Connections And Conditioning; Sampling Rate - Siemens SIMEAS Q80 Operating Instruction

10

Connections and Conditioning

10.1 Overview
Available inputs
· High voltage
· Current
For the input ranges and other connection issues of SIMEAS Q80 7KG8080, please see the chapter
Specifications and Pin Configuration

10.1.1 Sampling rate

The input sampling rate is currently 10 kHz per channel. The process of resampling uses interpolation to generate a
total number of samples for a data set which is a power of two and which is also a multiple of the fundamental network
frequency. This enables quick and convenient processing using Fast Fourier Transformation, which exactly covers the
fundamental frequency's spectral lines and provides sufficient resolution.
10.2 Interconnections SIMEAS Q80 7KG8080
10.2.1 Voltage measurement inputs
Connection scheme for voltage measurement
With the model SIMEAS Q80 7KG8080 - 1, instead of the current inputs there are four more voltage inputs U5
through U8. The second voltage group can be configured according to the connection types shown below,
independently of the first voltage group.
Note
When hooking up the lines for the model SIMEAS Q80 7KG8080 - 1, be aware that no
measurement between the two voltage groups is possible.
.
67
SIMEAS Q80 7KG8080 has four inputs for voltage measurements.
The 4 channels are designated U1 through U. For U1 through U4
there is a common ground reference N. Each channel's terminals are
designed for connection of only one cable. This also applies to the N
terminal!
For the appropriate cable cross-sections, please see the technical
specs in the technical data
There are different ways to connect the signals for measuring a
three-phase system
Power Quality Recorder SIMEAS Q80 7KG8080, Operating instruction
Connections and Conditioning
.
70
E50417-B1074-C419-A2, Release 09.02.2011
E-33
Technical