odpojovalo

Odpojovalo is a Czech term that translates to "disconnector" or "isolator" in English. It refers to a type of electrical switch that is used to physically separate a section of an electrical circuit from the rest of the system. Unlike circuit breakers, which are designed to interrupt current under load or fault conditions, disconnectors are intended to be operated only when the circuit is de-energized or has a very minimal load. Their primary function is to provide a visible and safe means of isolation for maintenance, repair, or inspection work.

Disconnectors are commonly found in high-voltage power transmission and distribution systems, as well as in industrial electrical installations. They typically consist of one or more movable conductive blades that are opened or closed by a mechanical operating mechanism. When the blades are open, there is a significant air gap, ensuring that no current can flow through the disconnected section. This physical separation is crucial for ensuring the safety of personnel working on the isolated equipment.

The operation of disconnectors is usually linked to other protective devices like circuit breakers. For safety, disconnectors are almost always operated after the circuit breaker has interrupted the current. They are not designed to break or make electrical currents under normal operating conditions, and attempting to do so can lead to dangerous arcing and damage to the equipment. The visible nature of the open contacts in a disconnector provides a high degree of confidence that the circuit is truly de-energized.