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52 -77
KV
COMPOSITE INSULATORS
Nominal System
Voltage
kV
Min. Creepage
Distance
mm
Section Length
mm
Rated
Mechanical
tensile load
kN
Wet power
freq. 1 min.
withstand
voltage
kV
Dry lighting
impulse
withstand
voltage
kV
52
1126
552
70
120
250
52
1585
628
70
145
250
66
1450
940
70
185
400
66
1900
940
70
185
400
66
1450
870
70
185
400
66
1450
940
70
185
400
66
1900
870
70
185
400
66
1900
940
70
185
400
66
2450
788
70
165
380
66
1728
820
70
165
380
66
1830
725
90
140
325
66
1600
950
100
185
400
66
1377
858
100
185
400
66
1450
940
100
185
400
66
1900
940
100
185
400
66
1850
910
100
185
400
66
2200
1010
100
185
400
66
1875
788
120
180
325
66
2500
657
120
230
400
66
2100
1025
120
200
380
66
2970
1040
120
230
450
66
2960
1060
120
280
450
70
2670
1180
120
280
450
70
2670
1172
120
280
450
*
The design and material of end fittings
as per Standard / Customer requirement
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