🔥✅INTERRUPTORES ALTA TENSION. Que son los INTERRUPTORES DE POTENCIA SF6 DE UNA SUBESTACION ELECTRICA
What Are Power Switches?
Introduction to Power Switches
- The speaker, Rosa Nicolás, introduces the topic of power switches and their relevance in mechanics.
- Power switches are compared to household switches but on a larger scale, emphasizing their function in interrupting and establishing electrical circuits.
Functionality of Power Switches
- Unlike low-voltage devices like thermal breakers found in homes, power switches operate at high or medium voltage levels.
- These devices consist of three phases (or poles), which are essential for managing electrical flow effectively.
Internal Components and Operation
- Inside power switches, SF6 gas is used due to its advantages over air; it is inert, odorless, colorless, non-toxic, and heavier than air.
- The SF6 gas helps extinguish electric arcs by capturing free electrons during operation.
Steps in Electrical Interruption Process
- The interruption process involves five steps: closing contacts, pre-compression of gas, formation of an electric arc between contacts, extinguishing the arc with gas pressure, and finally separating the contacts.
Distinction Between Switches and Disconnectors
- A key distinction is made between power switches and disconnectors; the former can open under load while the latter cannot.
- Disconnectors provide a visible break in the circuit for safety during maintenance operations.
Types of High Voltage Switches
Overview of Different Types
- Various types of high voltage switches exist for different applications; examples include those rated for 125 kV or 800 kV.
Introduction to Electric Arcs and Circuit Breakers
Overview of Electric Arcs and Insulators
- The discussion begins with an introduction to electric arcs, highlighting their significance in electrical systems.
- Various types of insulators are mentioned, specifically those used by Air France, indicating the diversity in applications and designs.
- The importance of understanding the symbols associated with these devices is emphasized, as they guide users in identifying circuit breakers.
Circuit Breakers Explained
- A distinction is made between automatic switches and regular switches; automatic switches can also interrupt short-circuit currents.
- The speaker encourages audience engagement by inviting comments for further clarification on topics discussed.