Potencial de toque y paso

Touch and step potential relates to how personnel may or may not be electrocuted when any part of a crane or load contacts an energized power line. In short, this is the case of "a bird on a wire." A bird lands on an energized power line and is not electrocuted because the bird is only touching one power line (one potential) and not another potential or ground. When any part of a crane, load line, or load (object) contacts energized power the crane will become electrified and the ground around the crane will also be electrified by the line voltage.

El “gradiente de tierra” es el voltaje en el suelo alrededor de la grúa y se disipa a lo largo de la distancia de la grúa.

Las “Zonas de Potencial de Tierra” son las zonas alrededor de la grúa que tienen un voltaje diferente. Son completamente invisibles y muy peligrosos.

Hay dos tipos de potenciales; potencial de paso y potencial de contacto.

1. "Step Potential" is the voltage between a person's two feet when they are standing within the ground gradient. A person could be at risk of serious injury or death simply by standing in the ground gradient area.
2. "Touch Potential" is the voltage between the energized object and the hand(s) of a person in contact with the object. A person could be at serious risk of serious injury or death by touching the crane or load.