IG-284-EN version 03; 06/05/2020
36
Recommended sequence
of operations
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
5.3. Phase concordance check
[13]
[14]
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.
There IS indication on the comparator
Optionally, other comparison devices which comply with Standard IEC 62271-206 may be used.
See section of these General Instructions.
Summary of Contents for velatia cgm.800
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