Connections And Conditioning - Siemens SICAM Q80 Operating Instruction

11

Connections and Conditioning

Overview
11.1
Available inputs
High voltage
Current
For the input ranges and other connection issues of SICAM Q80 7KG8080, please see the chapter
Specifications and Pin Configuration
11.1.1 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.
11.2 Interconnections SICAM Q80 7KG8080
11.2.1 Voltage measurement inputs
Connection scheme for voltage measurement
With the model SICAM 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 SICAM Q80 7KG8080 - 1, be aware that no
measurement between the two voltage groups is possible.
.
69
SICAM 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
There are different ways to connect the signals for measuring a
three-phase system
Power Quality Recorder SICAM Q80 7KG8080, Operating instruction
Connections and Conditioning
technical data 72 .
E50417-B1074-C419-A2, Release 12.01.2015
E-35
Technical