Combined with the 800 kV pot breaker hydraulic mechanism oil seepage fault
the earnest analysis hydraulic mechanism assembles a craft
carried on a check test to hydraulic mechanism spare parts
discover conjunction parts tolerance bigger and installing method inaccuracy is the root reason that cause failures.Pass to re-design the conjunction parts and improvement to install a method
complete elimination the security risk exists for follow-up to 800 kV pot breaker went into operation basis.