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18
80963B_MSW_GFW_11-2012_ENG
FUNCTIONAL DIAGRAM
Three-Phase Load without VLOAD option
RMS
Variable Ld.V fase 1
Voltmeter input
phase 1
I.VF1
control value
output
Ov.P
RMS
Voltmeter input
phase 2
I.VF2
Variable Ld.V fase 2
RMS
Voltmeter input
phase 3
I.VF3
Variable Ld.V fase 3
media
Variable Ld.Vt
(*)
Three-Phase Load with VLOAD option
Scale limits,
Offset
(o.tVL zone 1)
Variable Ld.V fase 1
Voltmeter input
on the load
phase 1
Voltmeter input
on the load
phase 2
Variable Ld.V fase 2
Voltmeter input
on the load
phase 3
Variable Ld.V fase 3
Scale limits,
Offset
(o.tVL zone 2)
Scale limits,
Offset
(o.tVL zone 3)
Filter
low pass
(Ft.tVL zone 1)
Filter
low pass
(Ft.tVL zone 2)
Filter
low pass
(Ft.tVL zone 3)
(*) with Dual-Phase command the zone 3 Ld.V value is calculated
as an average of the zone 1 and zone 2 Ld.V values
media
Variable Ld.Vt
(*)
LINE VOLTAGE VALUE
There are the following parameters if zone 1 has a single-phase load:
I.tV1 instantaneous voltmeter value of line
I.VF1 filtered voltmeter value
o.tV1 voltmeter input offset correction
Ft.tV voltmeter input digital filter
There are the following parameters if zone 1 has a 3-phase load:
I.tV1, I.tV2 and I.tV3, the instantaneous voltmeter value on line L1, L2 and L3, respectively.
RMS voltage values refer to voltage between 1/L1 and 3/L2 terminals.
I.VF1, I.VF2 and I.VF3 filtered voltmeter value on line L1, L2 and L3
o.tV1, o.tV2 and o.tV3 voltmeter input offset correction on line L1, L2 and L3.
Each phase has a voltage presence check that shuts off the module in case of incorrect values.
3-phase loads have an imbalance diagnostic, with consequent shut-down of the load and signal via LEDs.
A “voltage status” parameter contains information on the status of line voltage, including mains frequency identified 50/60Hz.
3-phase loads have diagnostics for correct phase connection, lack of a voltage, or imbalance of the three line voltages.
Содержание GFW ADV
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