Crane meets high voltage - what happens when the crane arm touches a high voltage wire?

I. Hazards to personnel

1. Electrocution casualties

When the vehicle arm comes into contact with a high voltage conductor, a conductive path will be formed as the crane body is usually made of metal. Operators may come into direct contact with the electrified body inside the crane, resulting in electrocution. The strong electric current generated by high voltage electricity passing through the human body can cause serious damage to the nervous system, heart and other vital organs of the human body.

Even if the operator is not in direct contact with the body, a step-over voltage can exist within a certain range around the crane. When the human body stands with its feet apart on the ground with a potential difference, the electric current will flow in from one foot and out from the other, resulting in electrocution injuries.

2. Arc burns

The moment the arm comes into contact with the high-voltage conductor a strong electric arc is generated and the temperature can reach thousands of degrees Celsius or even higher. Operators and nearby personnel may be burned by the arc, resulting in severe damage to skin tissue, deep burns, charring, and other conditions.

II. Damage to vehicles

1, equipment short circuit and damage  ;;

Contact of the vehicle arm with high voltage conductors will result in a short circuit in the electrical system of the crane. A strong short-circuit current will instantly flow through the vehicle's electrical circuit, burning electrical components such as motors, controllers, cables, etc. If the structural integrity of the arm is damaged, it may cause the arm to break, further triggering the collapse of the crane.   

III. Impact on the power system

A vehicle arm touching a high-voltage conductor may cause a fault such as a short circuit, grounding or disconnection of the high-voltage line. When a short-circuit or grounding fault occurs, the line's protective device will operate, such as tripping a circuit breaker, to shut down the area supplied by that line

Fourth, the near electric anti-touch intelligent warning device to solve the siege

Shenzhen Dingxin Wisdom Technology's near-electricity anti-collision intelligent warning device belongs to the non-contact high-voltage signal detection and anti-electric shock warning equipment.  belongs to the non-contact high-voltage signal detection and anti-electrocution early warning reminder equipment, in the car arm side of the monitoring end of the tight fit, fixed, you can real-time arm detection near the high-voltage signal, and through 2.4G wireless communication back to the cockpit receiver, to carry out sound and light reminder of the high-voltage danger Do not approach! Do not approach". The safety alarm distance can be set on its own, if there is a wider range of warning needs, can also be used with external alarm lights to pull the "sound + light" warning status, in order to strive for real-time notification to more people.

It is not difficult to see from the functional characteristics of the near-electricity anti-electrocution intelligent early warning device, which carries out the purpose from beginning to end - safety first, prevention first, adapted to all vehicles with anti-electrocution needs, eliminating potential safety hazards in the embryonic state. Many operational vehicles are often in a complex and changing environment, especially in areas close to high-voltage transmission lines, where the risk of electrocution is extremely high. Through advance warning, when the vehicle's proximity to high voltage reaches the set safety distance threshold, the device immediately issues an alarm, allowing the operator sufficient time to take measures, such as stopping the crane movement, adjusting the crane position, etc., so as to prevent electrocution accidents due to accidental contact between the crane and the high voltage.