Ormazabal velatia cpg.1, Общее руководство по инструкции, Страница: 38 / 44

General Instructions
Safety elements
38
cpg.1
GIS-type medium-voltage switchgear with full insulation in gas, up to 38 kV,
in accordance with IEEE Standards
IG-197-US version 02; 07/11/2019
8 Safety elements
8.1 Maintenance
For safety reasons, maintenance operations
performed directly on the driving mechanism
must be performed WITHOUT any driving levers
inserted.
The active parts of the driving devices and main circuit of
cpg.1 cubicles do not require inspection or maintenance,
thanks to the integrated SF
6
insulation, meaning there is
no influence from external environmental factors. Class E2
electrical endurance tests mean there is no restriction on
maintenance of the breaking components.
The operating mechanism for the cpg.1 system cubicles
driving devices does not require lubrication for correct
operation throughout its estimated lifetime, according to the
service conditions specified in IEC 62271-1.
These mechanisms must be inspected when used under
extreme conditions (dust, salt, pollution). It is advisable to
carry out at least one operation during the inspections.
Components manufactured from galvanised sheet steel
have been painted to ensure their resistance to corrosion.
Any scratches, dents or similar on them must be repaired to
prevent corrosion.
8.2 Voltage presence detectors
The voltage presence/absence indicator installed in
cpg.1 cubicles is designed and built in accordance
with the recommendations laid down in standards
IEC 61243-5, VDE 0682 Part 415 and IEC 62271-206, within
the integrated detectors without auxiliary power supply
category.
Figure 8.1
Voltage presence-absence indicator
The unit has three light signals corresponding to phases
L1, L2 and L3. On the front of the indicator, a test point is
accessible for each of the phases and ground, which is used
to test the balance of all phases. We recommend use of any
universal phase comparator which complies with standard
IEC 61243-5.
As an option, the unit has a free auxiliary contact for remote
indication of voltage presence/absence.
The device indication complies with the requirements laid
down in standard IEC 61243-5:
Absence of
voltage
Uncertainty
Presence of
voltage
U < 10% U
r
10% < U
r
< 45% U > 45% U
r
*U
r
, rated operating voltage.
U, phase-to-ground voltage.
The presence of voltage is indicated by activation of the
LEDs for each of the phases. If the presence of voltage is not
detected, the LEDs for each of the phases remain unlit.