Maintenance 4 of circuit breakers
- Formation level
- Intermediate - Expert
- Domain
- Maintenance Substation
- Duration of training
- 42 hour(s)
- Reference
- MAINPO30
/ Informations
- Intern Profil
Maintenance operators in the post area.
- Required
Knowledge of maintenance operations 1-2-3 in the substation area.
- Needed stuff
PPE, PC and something to write with.
/ Content
- • General principles and special features of FVH and SF6 circuit breakers and their controls,
• Removal and installation of a mechanical control,
• Requalification of LV conductor wiring,
• Functional tests (including operating time measurements),
• Presentation of the system for mechanically locking the circuit breaker in the closed Substation,
• Removal and fitting of a power actuator on a HV SF6 circuit breaker (FL2A) Bleeding of the hydraulic circuits,
• Removal and fitting of a circuit-breaker breaking head. SF6 (FX14) Gas recovery and storage,
• Measurement tools (Multichrono, microhmeter, etc.),
• Feedback on equipment behaviour (circuit breaker),
• Formalised work preparation including risk analysis, prevention methods, operating procedures, resources, waste management, etc.
/ Objective
• Explain the characteristics and operating principle of an FVH and SF6 circuit breaker,
• Explain the operating principles of a hydraulic and mechanical drive,
• Replace a mechanical control,
• Bleed hydraulic circuits and carry out hydraulic checks when removing and refitting a power cylinder,
• Replace an SF6 circuit-breaker head,
• Know how to carry out functional tests (multi-chrono, micro-meter, etc.),
• Know how to apply safety rules when working on electrical substations (prevention of specific substation risks),
• Know how to draw up the annual maintenance programme in accordance with OMF policies and technical notes on maintenance ranges,
• Be able to detect anomalies on HV substation structures and equipment during a substation visit (excluding GIS).
• Implement measures to prevent environmental risks (SF6 discharges, oil, waste treatment, etc.),
• Know how to define the supply requirements necessary for substation maintenance operations,
• Know how to use the tools and techniques required for routine 1-2-3 maintenance operations on transformers and tap changers,
• Knowing how to diagnose a transformer fault by means of checks and/or measurements, and implementing protective measures.