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Maximum voltage Um
①
of the equipment
(Effective value)
kV
12
24
24
36
36
① See IEC 60071
* If there is a high-voltage tap on this side, parameters of column 'a' shall apply to column 'b'; Otherwise, column 'c' applies.
6.7 Grounding
After the transformer is installed, ensure that the transformer body and enclosure are reliably grounded.
Rated lightning impulse withstand voltage LI
List 1
kV
-
95
-
145
-
①
Minimum clearance value
List 2
a
kV
mm
75
120
-
160
125
220
-
270
170
320
b
c
d
mm
mm
mm
*
50
40
*
80
50
*
100
70
*
120
90
*
160
110
17
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