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The performance curve of insulators (table 1 and figure 1) and K factor (table 2) ... These tests were performed on a large variety of cap and pin insulators and on ...
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36-WG11/Milan/98 E. Spangenberg

October 2001 Dimensioning rules at EDF in 70’s

Lf = K .Um . l with K : correction factor related to average diameter

Pollutio n level zone 1

l cm/kV phase to phase

kg/m3 zone 2

zone 3

0.6

2.5

5

7

10

14

20

28

40

56

80

0.84

1.25

1.5

1.63

1.76

1.88

2.02

2.16

2.3

2.43

2.57

Table 1 : performance of insulators

average diameter cm K