YBT-YFD45 Active pre-discharge lightning rod
Model:YBT-YFD45 Active Early Streamer Emission (ESE)Lightning Rod
Early Streamer Emission Time:45 μs
Material:Alloy
Weight:5kg
Installation Method:Flange fixation/Welding
Operating Conditions:Work all day
Corrosion Resistance:Highly corrosion-resistant,acid and alkali-proof
Appearance:Sleek design,easy to install
Maintenance-Free:Passive operation,no power supply required,no energy consuming components
ESE Function:Equipped with energy storage components capable of triggering upward leaders;optimized tip radius to reduce corona effect and ensure proper functioning of the pulse device
Lightning Rod Features
Strictly follow the mandatory provisions of the National Lightning Protection Standard of the People’s Republic of China -“Code for Lightning Protection Design of Buildings”(GB50057 -2010).
The electronic components are completely wrapped in epoxy resin to prevent the internal electronic components from being damaged by lightning.
No radioactive elements,safe and reliable;stainless steel material,corrosion resistant,beautiful appearance.
Accurately judge the discharge timing to make lightning strike more accurate and reduce
the probability of lightning striking points not falling on the lightning rod body. A fully active system that activates itself only when there is a sign of lightning.
Calculation method of protected area
YBT-YFD45 active pre-discharge lightning rod protection radius Rp protection radius calculation formula:According to NFC17 -102,the tip of the lightning rod should be more than 2M above the horizontal plane of the protected object.When the relative installation height h of the lightning rod is different,its protection radius Rp follows the following calculation formula:Rp=√h(2D-h)+△L(2D+△L)
The calculation formula should take into account the lightning protection level of the protected object,local thunderstorm activities,and geological features.The protection radius Rp of the lightning rod is related to the height h, the preemptive start time,the lightning rod model,and the selected protection level.Among them:Rp is the protection radius of a lightning rod at a certain height
The above formula is applicable to h＞5m;when h＜5m,the
corresponding protection radius of each model can be found from Table 1.1 :
①h is the actual height from the top of the YBT-YFD45 active pre-discharge lightning rod to the protected plane.
②D is the electric shock distance or rolling ball radius,which depends on the protection level of the protected object.For
Class 1,Class Ⅱ,and Class Ⅲ protection levels,the values of D are 20 meters,45 meters,and 60 meters respectively.The protection level determination of the protected object is shown in the NFCl7 -102 standard appendix.
③△L(m)=1（m/μs）×△T(μs).△T is the advance lead time,and its value is obtained by actual measurement of high-voltage experiments.
Quick reference table of protection radius of YBT-YFD45 active pre discharge lightning rod in Class Ⅰ,Class Ⅱ,and Class Ⅲ:
Lightning rod installation
YBT-YFD45 active pre-discharge lightning rod strictly follows the mandatory provisions of the National Lightning Protection Standard of the People’s Republic of China -“Building Lightning Protection Design Code”(GB50057 -2010):
1.Determine the lightning protection category of the building according to the area,height,number of lightning days at the location,geographical environment correction coefficient,and building use nature of the protected building.
2.The down conductor (lower conductor)should be electrically connected to the main steel bars of the building,or two or more down conductors (lower conductors)should be made as required.
3.The down conductor (lower conductor)should be provided with a disconnect card and insulation protection on the nearby ground.
4.The grounding body,grounding resistor,and lightning protection ground network should be implemented in accordance with the requirements of the lightning protection standard GB50057 -2010.
Lightning rod installation diagram
