5.2. Live voltage indicator
[12]
See section “5.3. Phase concordance check”.
Ormazabal
has two live voltage indication options:
1. ekor
.vpis unit for detecting voltage, designed in
accordance with Standard IEC 62271-206. Therefore,
the "live voltage" indication is displayed when the line-
to-earth voltage is equal to or greater than 45 % of the
rated voltage and is not visible when the line-to-earth
voltage is less than 10 % of the rated voltage.
2.
The
ekor
.ivds unit for detecting voltage is designed in
accordance with Standard IEC 61243-5. Therefore, the
"live voltage" detection is displayed when the line-
to-earth voltage is between 45 % and 120 % of the
rated voltage and is not visible when the line-to-earth
voltage is less than 10% of the rated voltage.
Both units provide a clear visual indication for the user,
without needing an auxiliary power supply for operation.
For each of the three phases, the presence of voltage is
indicated by intermittent flashing of the indicators.
The voltage detector has the following displays:
1.
L1, L2, L3 signal each of the indicator phases. The
numbering corresponds to the order of the phases,
from left to right, seen from the front of the cubicle.
Each phase has a test point for checking the phase
concordance between cubicles.
2.
Live voltage indicator.
The flashing light indicates the presence of voltage in
this phase.
3.
Phase test points.
Each phase has a test point for checking the phase
concordance between cubicles.
4.
Earth test point.
This is only used for comparing the phases.
Figure 5.3.
Live voltage indicator unit
The purpose of the test points for the three phases and
earth is to make it easier to check the phase concordance
[12]
between cubicles.
Ormazabal
's specific phase comparator
ekor
.spc can be used to do this.
With the
ekor
.vpis, if the indicators do not light up, use
other means to check that there is no voltage.
IG-078-EN version 12; 23/04/2020
50
Recommended sequence of operations
General Instructions
cgmcosmos
: Medium-voltage cubicles with full insulation
in SF
6
gas up to 24 kV in accordance with IEC Standard
Содержание velatia cgmcosmos
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