IG-123-EN version 11; 23/07/2021
73
General instructions
cpg
.0: GIS medium-voltage switchgear,
gas insulated, up to 40.5 kV,
in accordance with IEC Standard
Safety elements
8. Safety elements
8.1. ekor
.ivds
voltage detectors
The voltage presence/absence detector installed in
cpg
.0
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 built-in
detectors without auxiliary power supply category.
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 earth, which is used
to test phase concordance. We recommend use of any
universal phase comparator which complies with Standard
IEC 61243-5. As an option, the detection unit has a free
auxiliary contact for remote indication of voltage presence/
absence.
The device indicator complies with the requirements laid
down in Standard IEC 61243-5:
• Absence of voltage: U(*) < 10 % U
n
(**)
• Uncertainty: 10 % U
n
< U < 45 % U
n
• Voltage presence: U > 45 % U
n
(*) U = line-to-earth voltage.
(**) U
n
= rated operating 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.
8.2. Locking with padlock
Optionally, on request, the cubicles are supplied with
independent padlock interlocking for both the feeder
disconnector in its opened or connected positions, and the
earthing switch in opened or connected positions. Padlocks
with ring diameters of between 8 and 11 mm can be used.
The circuit-breaker operation buttons can be interlocked
individually using a padlock.
8.2.1. Locking with key lock
Both the feeder disconnector and the earthing switches can
have an optional key locking device, which allows operation
to be blocked in both opened and connected positions.
Summary of Contents for velatia cpg.0
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