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ENCYCLOPEDIA OF RADIO ELECTRONICS AND ELECTRICAL ENGINEERING
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Annex 3.1. Average voltage distributions over suspended porcelain insulators of garlands of overhead lines 35 - 220 kV. Encyclopedia of radio electronics and electrical engineering

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Encyclopedia of radio electronics and electrical engineering / Rules for the technical operation of consumer electrical installations (PTE)

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Table 13

VL voltage, kV Number of insulators in a garland

Voltage, kV, on the insulator number (counting from the design or traverse)

1 2 3 4 5 6 7 8 9 10 11 12 13 14
220 14 9 8 7 7 7 6 7 7 8 9 10 11 13 18
  13 10 8 8 8 7 7 7 8 8 10 12 14 20 -
110 8 8 6 5 4,5 6,5 8 10 17 - - - - - -
  7 9 6 5 7 8,5 10 18,5 - - - - - - -
  6 10 8 7 9 11 19 - - - - - - - -
35 4 4 3 5 8 - - - - - - - - - -
  3 6 5 9 - - - - - - - - - - -
  2 10 10 - - - - - - - - - - - -


Note. The sum of the voltages measured over the insulators of the garland should not differ from the phase voltage of the overhead line by more than ± 10% for garlands on metal and reinforced concrete supports and by more than ± 20% on wooden ones.

See other articles Section Rules for the technical operation of consumer electrical installations (PTE).

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