7.2. Acoustic earthing prevention alarm test
To test that the
ekor
.sas acoustic alarm is working correctly,
connect the
ekor
.vpis live voltage indicator at 230 V
ac
with
4 mm terminals, which are placed in the indicator between
the earth test point and the test point for phase L1. Maintain
the auxiliary power for 5 minutes, after which time the lever
is inserted in the earthing switch shaft in order to carry out
the operation. The alarm starts to sound and continues to
sound for at least 30 seconds. It will stop when the lever is
removed.
The
ekor
.sas alarm can be replaced if necessary, since it
is joined to the associated units with two friction-fit PCB
connectors:
• One three-pin connector, polarised for the live voltage
indicator.
• One two-pin connector for the lever microswitch.
The procedure is as follows:
1.
Remove the screws which hold the upper covering
panel and remove it.
2.
Remove the driving mechanism cover.
3.
Gently press the lower fastening flanges on the
ekor
.sas unit to remove it.
4.
Undo both connectors and replace the damaged
unit; then connect it to the lever microswitch (2-pin
connector) and the voltage indicator (polarised 3-pin
connector).
Figure 7.2.
Positioning of the
ekor
.sas
device in
cgmcosmos
feeder
functions
ekor
.sas connections:
Figure 7.3. ekor
.sas
connections for
cgmcosmos
system
IG-078-EN version 12; 23/04/2020
110
Maintenance
General Instructions
cgmcosmos
: Medium-voltage cubicles with full insulation
in SF
6
gas up to 24 kV in accordance with IEC Standard
Summary of Contents for velatia cgmcosmos
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