5.3. Phase concordance check
[13]
Optionally, other comparison devices which comply with Standard IEC 62271-206 may be used
[14]
See section “5.2. Live voltage indicator” of these General Instructions.
Ormazabal
's
ekor
.spc
[13]
phase comparator should be used
for checking that the medium-voltage cables are correctly
connected to the feeder cubicles.
Firstly, connect the red cables of the
ekor
.spc unit to the
corresponding phase test points in the voltage indication
units
[14]
, and the black cable to the earth test point. This
operation must be repeated for all the phases: L1, L2 and L3
Figure 5.4.
Detail of
ekor
.spc
Figure 5.5.
Detail of
ekor
.spc
Comparison of balanced phases
Figure 5.6.
There is NO indication in the comparator.
Comparison of unbalanced phases
Figure 5.7.
YES, there is indication in the comparator.
IG-078-EN version 12; 23/04/2020
51
General Instructions
cgmcosmos
: Medium-voltage cubicles with full insulation
in SF
6
gas up to 24 kV in accordance with IEC Standard
Recommended sequence of operations
Содержание velatia cgmcosmos
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