Lightning protection knowledge

Lightning protection knowledge

Natural disasters can be prevented Safeguarding the line of life and property

◎Understanding Lightning: The Super Voltage in Nature

Lightning and thunder are very common weather phenomena in nature. On average, there are over 310,000 lightning and thunder incidents on Earth every year. It usually occurs in summer when there are more thunderstorms.

◎The generation of lightning: When dust, ice crystals and other substances in the air roll and move in the clouds, through some complex processes, these substances respectively carry positive and negative charges. Protrusions on the ground, metals, etc. will be induced to generate positive charges. As the electric field gradually strengthens, the thunderstorm cloud forms a downward leader, and the objects on the electric surface form an upward reflux. When two meets, a discharge to the ground occurs, this can easily cause lightning disasters.

〓Direct lightning strike (electrical effect, thermal effect, mechanical effect)

Feature Description: Directly strike buildings, human bodies or other objects, the high voltage, large current, electrical effect, thermal effect and mechanical effect generated by lightning cause buildings to burn, explode or collapse, and human bodies to be burned or even die. The object was burned, disintegrated and exploded

Risk index：★★★★★

〓Induced lightning (electrostatic induction, electromagnetic induction, electromagnetic pulse, lightning reaction)

Feature Description: Entering the room through wires/pipes, induced lightning has greatly increased the chance of lightning strike accidents in the electronic age. It can cause lightning electromagnetic pulses of about 10,000 volts, with duration of 50 nanoseconds. The duration is short but the voltage is high, thus forming a very harmful surge overvoltage

Risk index：★★★★

〓Cloud Flash

Feature Description: Discharge between Clouds can easily cause fires

Risk index：★★★

◎The hazards of lightning

Lightning disaster is one of the ten most serious natural disasters announced by the United Nations International Decade for Disaster Reduction. Statistics from 2008 shows that the losses caused by lightning have risen to the third place among natural disasters. According to statistics from the China Meteorological Administration, on average, over 3,000 people are injured or killed by lightning strikes in China each year, and the direct economic loss exceeds 5 billion Yuan.

◎The four major lethal threats posed by lightning

1. Personal injury 

   - A lightning strike instantly generates a temperature of 30,000 ℃ (approximately five times that of the Sun's surface).  

   - *Case: In 2023, a lightning strike on a pavilion in a certain scenic area resulted in 2 deaths and 5 injuries*

2. Electronic equipment malfunction  

   - Induced lightning can burn out unprotected electrical appliances within 0.01 seconds  

   - *Data: 80% of computer room failures are caused by the overvoltage of lightning*

3. Building fire explosion  

   - Lightning strikes on oil tanks and chemical plants can trigger a series of explosions

4. Production system interruption  

   - A one-hour shutdown of a factory production line can result in losses of up to a million

◎The golden rule for lightning protection and risk avoidance

Outdoor Safety Avoidance (Remember 3 not to do)  

× Don't stand on the top of the mountain or on the rooftop

× Don't approach isolated big trees/billboards

× Don't hold metal items (umbrellas/golf clubs)

◎ Indoor Protection (Key 4 Steps) 

√ Close the doors and Windows and stay away from the metal water pipes

√ Unplug the electrical appliance to cut off the power supply

√ Stop using solar water heaters

√ Install professional lightning protection devices

◎After being struck by lightning, the following symptoms will occur in the human body:

▲Especially, "cardiac arrest" is a life-threatening dangerous symptom, so full preparations should be made.  

① In order to respond promptly, please follow the EAP in emergency situations

② If there is no response or breathing, immediately start cardiopulmonary resuscitation and use an AED   

③ Burns: The heat generated when an electric current passes through the skin surface can cause mild or severe burns

④ Auditory and visual impairments: The sound and impact of lightning strikes may cause eardrum rupture or temporary visual impairments

⑤ Faint: When struck by lightning, the current passing through the brain and nervous system may cause loss of consciousness.

⑥ Palsy: Nerve damage may lead to quadriplegia or abnormal sensations.

◎Technological Lightning Protection: Installing a "Golden Shield" for Safety

Recommend to deploy our company's lightning protection (product) systems

Lightning is merciless  but defense is effective

> >If your company has any lightning protection needs, please contact us. We will dispatch professional personnel to the site to formulate a professional lightning protection plan for you

> >Choose SANKOSHA Lightning Protection Technology, and let safety be an unbreakable guardian

> > > > Lightning protection expert hotline: +86-20-34969113