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Circuit breaker and Generator circuit breaker lifecycle management

Alstom Grid has more than 60 years of worldwide experience dedicated to live tank, dead tank and generator circuit breakers on legacy products. Alstom Grid provides you with a full range of services on the three different types of insulating technologies: minimum oil, air blast and SF6circuit breakers. 

Circuit Breakers automatically protect installations against phase-to-phase short circuits as well as phase-to-earth short circuits and optimise the reliability and efficiency of operating networks. Operators require cost-effective solutions to avoid unscheduled downtime, major failure and the subsequent penalties.

Service experts provide support from erection and commissioning to retrofit, through specifics operations on:


  • External conditions, historical data analysis, service history
  • Condition monitoring data, RPH and stress assessment analysis


  • Repair or replacement of defective parts, from damaged/obsolete accessories
  • Condition based maintenance with continuous condition monitoring, stress assessment analysis (Alstom algorithm application) and synchronisation
  • SF6 management


  • Circuit breaker mid-life overhauling with air/pole/gas tightness improvements. GCB forklift upgrade.
  • Upgrade of hydraulic, mecanic, spring mechanisms
  • Electrical ratings upgrade such as nominal current, short-circuit current, breaker tripping time, protection performances, nominal power and adding bays 
  • Comprehensive solutions considering technical, financial, planning, environmental, regulatory risks
  • Short lead-times compared to new equipments
  • Equipments’ life extension and optimisation
  • Strategic spare parts management
  • Improved power quality and ratings
  • Switch to proactive maintenance
  • Repair of defective parts
  • Change the voltage levels
  • Reduction of losses and noises
  • Reduced system outages/failures and related costs
  • Higher return on investment
  • Increased safety and environmental conditions

Downloads for the Circuit breaker and Generator circuit breaker lifecycle management