User manual

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24
Useful Information
Installation
19
Digital Output 2
23
26
25
■ What is ASY
The ASY variable allows the user to control the symmetry of
the delta voltages (for systems without neutral) and star volt-
ages (for systems with neutral). The variable is calculated
according to the following formula:
Where: Vmax is the max. value among VL1-N, VL2-N, VL3-N
Vmin is the min. value among VL1-N, VL2-N, VL3-N
Vavg is the average: (VL1-N, VL2-N, VL3-N)/3
The variable is not displayed by the instrument, but can be
retransmitted by the analogue or RS422 / 485 output and
can be controlled by means of the alarm.
■ Retransmitted variables
Vmax - Vmin
Vavg
*100ASY=
N° Variable 3-ph with 3-ph with- Notes
neutral out neutral
1 V L-NΣ x Σ = system
2V L-LΣ xxΣ = system
3WΣ xxΣ = system
4 varΣ xxΣ = system
5VAΣ xxΣ = system
6PFΣ xxΣ = system
7PF x x
8 VA dmd x x
9 W dmd x x
10 ASY x x asymmetry
11 The energy meters as per table on page 17
12 All instantaneous variables (powers, currents, voltages)