A method of maintaining one or more conductive stages. （Divisional request 201800386）

摘要

Iacute; trif amp; Aacute; the Central American integration system, these stages are called a, B and C, of which at least one stage has one SACI amp; oacute; n that needs maintenance, M amp; eacute; All of these include: enabling a PR amp phase; oacute phase; about to enter the phase requiring maintenance; connection and amp phase; oacute phase; N parallel to power load; Iacute phase; a and transfer phase; offline maintenance of EL amp phase; eacute phase; ctrica phase maintenance.