IG-284-EN version 03; 06/05/2020
65
General Instructions
cgm
.800: Medium-voltage switchgear with integrated insulation in SF
6
gas
up to 36 kV in accordance with IEC Standard with rated current up to 800 A
Maintenance
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 voltage
presence Indicator.
• One two-pin connector for the lever microswitch.
The procedure is as follows:
1.
Remove the driving mechanism cover.
a.
Unscrew the
ekor
.sas unit to extract it.
b.
Undo both connectors and replace the current
unit; then connect it to the lever microswitch
(2-pin connector) and the voltage indicator
(polarised 3-pin connector).
Figure 7.2.
Detail of
ekor
.sas device
Summary of Contents for velatia cgm.800
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