😱✅ Que es un RECONECTADOR? RECONECTADORES electricos media tension. Recloser funcionamiento

Reconectador: Understanding Its Functionality

Introduction to Reconectador

• The video introduces the reconectador, a device commonly used in medium and low voltage systems to manage power interruptions at home caused by transient faults.

• It explains the purpose of the reconectador, its origin, and how it operates within electrical distribution networks.

Causes of Electrical Failures

• Various causes for electrical failures are discussed, including short circuits from objects like kites touching power lines or natural events such as lightning strikes.

• When a fault occurs, transformer station protections activate, leading to temporary loss of energy until maintenance can be performed.

Economic Impact of Power Interruptions

• The video highlights that prolonged outages result in financial losses for electricity providers due to downtime and maintenance costs.

• Transient faults are defined as brief disruptions that resolve on their own without requiring physical intervention.

Functionality of the Reconectador

• The reconectador is described as an automatic switch with three poles (one for each phase), equipped with current transformers that detect overload conditions.

• It has four operational responses: a quick actuation upon detecting a fault, followed by timed attempts to reconnect power while avoiding upstream fuse activation.

Detailed Operational Logic

• The first response involves opening quickly after detecting a fault and waiting approximately 300 milliseconds before attempting reconnection.

• If the fault persists, subsequent attempts involve longer wait times between actions. The fourth attempt utilizes electrodynamic forces generated by high currents to help clear transient faults automatically.

Final Actions and Manual Intervention

• After multiple failed attempts at reconnection, if the fault remains persistent, manual intervention is required to restore service.

• A distinction is made between transient faults (short-lived issues like branches or animals causing momentary disruptions) versus permanent faults that require human resolution.

Control Mechanisms and Programming Options

• The internal control cabinet allows programming options for the reconectador's operations based on specific needs or scenarios encountered in the field.

Understanding Circuit Selectivity and Fuse Operation

Circuit Selectivity and Functionality

• The concept of circuit selectivity is introduced, emphasizing the importance of upstream fuses acting to isolate faults effectively. This ensures that only the affected section of a circuit is de-energized while maintaining power to other areas.

• A reconnection device (reconectador) plays a crucial role in managing energy distribution. It initially allows power to flow to all connected homes but reacts within approximately 300 milliseconds if a fault occurs.

• If the fault persists, the reconnection device will act again after 1 to 2 seconds, allowing downstream fuses time to operate. This mechanism helps isolate the faulty section from the rest of the network.

• Once a fuse operates due to a fault, that specific area loses power while other unaffected zones remain energized. Maintenance can then be performed on the faulty section without disrupting service elsewhere.