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What crawler cranes should do in the face of thunderstorms
Jul 09,2021
What crawler cranes should do in the face of thunderstorms
"It was fine just now, but after a thunderstorm, the computer of the crane was not normal."
This kind of feedback is often received during the thunderstorm season, and it is usually the crane that has been struck by lightning.
The average current of lightning is 30 kA and the maximum current is 300 kA. The voltage of lightning is about 100 million volts to 1 billion volts, which is enough to cause breakdown of electronic components and damage to multiple controllers and sensors.Even with a surge protector, the safety of the equipment during thunderstorms cannot be fully ensured.
A thunderstorm is approaching
To ensure the safety of the equipment
Here's an interesting and useful collection of knowledge:
1. Reduce the height of the whole machine
The crane boom is higher, especially in the open place, the erect boom is like the electric needle of the earth, which is very easy to attract lightning, so the boom is prone to the ground or prone to the lowest state under the allowable conditions, to reduce the probability of being directly hit by lightning.
2. Switch off and disconnect the main switch of power supply
Turn off the engine of the vehicle and turn off the power switch, which can cut off the power supply of all electrical components of the vehicle to avoid the formation of a loop.
3. Unplug the controller plug
you can physically isolate the controller and other heavy electrical parts from the electrical system of the whole machine, prevent large current and voltage through, protect the controller.
4. Lightning protection grounding
The installation of lightning protection grounding device can keep the crawler crane well grounded. When the high voltage formed by lightning is superimposed on the crawler crane body, the grounding system can quickly release the voltage higher than the safe work of the control system. The whole vehicle is kept as an equal potential body, and the control system components will not be damaged due to local high voltage.
Warm prompt
The above measures can reduce the probability of lightning damage to equipment, but they cannot completely avoid the occurrence of electrical parts damage caused by lightning (especially the damage caused by direct lightning).
Keyword:
crawler crane
undercarriage parts
XCMG crane parts
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