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Recent content by Massoud1

  1. Massoud1

    Is there a way to test post insulators? Is there an expected life

    No need to guess anything, just take a few samples and send them to a test lab in order to perform routine tests according to IEC standard.
  2. Massoud1

    Switchyard lighting

    Sure, each gantry comprises two columns and one pole. Since string insulators and live parts terminate to the pole, one (who has to be familiar with the hazardous area) can go up the column an change the lamp.
  3. Massoud1

    Switchyard lighting

    Projectors normally are installed on gantry coulmns not on gantry poles so one could change a lamp in an energized substation safely.
  4. Massoud1

    Neutral bushing insulation level for a solidly grounded 400/132/20 kv Ynyn0d11

    I would like to know how can I size the insulation level for both primary and secondary neutral bushings of a solidly grounded 400/132/20 KV Ynyn0d11 power transformer. Regards Massoud
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