Projekta Nr.prEN 50XXX
NosaukumsThis standard applies to three-pole circuit-breakers according to IEC 60056 with a rated voltage of 420 kV which consist of 3 singl poles with 1 support frame for each pole or 2 or 1 support pillar(s)
Reģistrācijas numurs (WIID)50420
Darbības sfēraThis standard applies to three-pole circuit-breakers according to IEC 60056 with a rated voltage of 420 kV which consist of 3 singl poles with 1 support frame for each pole or 2 or 1 support pillar(s)
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