Circutor CVM-A1000, Инструкция по эксплуатации

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On the display screens the lower area disappears after 3 seconds without pressing any key.
It reappears by pressing the key
.
4�4�3�- CENTRAL AREA
The different display and setup menus for the device are accessed from the central area.
All instantaneous, incremental and demand parameters in various formats are also displayed:

Numeric representation of one, three and up to four parameters at the same time.

Analogue representation.

Graphical representation.

Representation on a bar chart.
A bar chart is displayed for instantaneous and demand parameters,
Figure 34
, which shows the
current instantaneous value, maximum and minimum values and pre-alarm and alarm zones
programmed.
Figure 34: Description of the bar chart�
If an alarm has not been programmed for the parameter, the pre-alarm and alarm zones shown
in the bar chart are calculated.
Figure 35: Calculation of the bar chart�
The calculation formulas are:

Neutral-phase voltage and neutral voltage
L = Primary rated voltage* 0.9 H = Primary rated voltage * 1.1
Min = L * 0.8 Max = H * 1.2
P
L
= L + (( H - L ) * 0.1) P
H
= H - (( H - L ) * 0.1)
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CVM-A1000 - CVM-A1500
Instruction Manual