Ormazabal cgmcosmos-2lv, Общее руководство по инструкции

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Maintenance
43
General instructions
cgmcosmos
system
Medium voltage switchgear and control gear, fully insulated in SF
6
gas up to 24 kV with external cable test device
IG-257-EN version 01; 03/02/2016
7.2 Acoustic earthing prevention alarm test
The supply of this safety element is optional
To test that the
ekor .sas
acoustic alarm is working correctly,
connect the
ekor .vpis
voltage presence indicator to
230 V
ca
with 4 mm terminals, which are placed in the
indicator between the earth test point and the test point for
the L1 phase. 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 3-pin connector, polarised for the Voltage
Presence Indicator.
• One 2-pin connector for the lever microswitch.
The procedure is as follows:
• Remove the screws which hold the upper covering
panel and remove it.
• Remove the driving mechanism cover.
• Gently press the lower fastening flanges on the
ekorSAS
ekor .sas
unit to remove it.
• 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).
Fig. 7.2 Position of the
ekor. sas
device on
cgmcosmos
feeder
functions