Arcteq AQ-S215, Инструкция по эксплуатации

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Please note that setting the number of available stages does not activate those stages, as they also
need to be enabled individually with the PSx >/< Enabled parameter. When enabled an active
stage shows its current state (condition), the expected operating time and the time remaining to trip
under the activation parameters. If a stage is not active the PSx>/< condition parameter will merely
display “Disabled”.
Setting up programmable stages
Programmable stages can be set to follow one, two or three analog measurements with the
PSx >/<
Measurement setting parameter. The user must choose a measurement signal value to be compared
to the set value, and possibly also set a scaling for the signal. The image below is an example
of scaling: a primary neutral voltage has been scaled to a percentage value for easier handling when
setting up the comparator.
The scaling factor was calculated by taking the inverse value of a 20 kV system:
When this multiplier is in use, the full earth fault neutral voltage is 11 547 V primary which is
then multiplied with the above-calculated scaling factor, inversing the final result to 100%. This way a
pre-processed signal is easier to set, although it is also possible to just use the scaling factor of 1.0 and
set the desired pick-up limit as the primary voltage. Similaryly, any chosen measurement value can be
scaled to the desired form.
A AQ Q-S215 -S215
Instruction manual
Version: 2.04
103