WebAll these calculations are based on lightning strike density in that particular area ( provided by OMV i.e. Ng = 8), Danger for people, Occupation coefficient of structure, Relative location of site, Fire Risk, Associated services, Electrical Lines, Lightning Protection Level, Surge Arrestor and dimensions of installation. Web36.00. Annual thunderstorm days Lightning flashes / sqkm / year Lightning flashes / year. fLIGHTNING CALCULATION FOR COOLING TOWER Width of Building Depth of building Height of building L = W = H = 40 15 12 m m m 12.00 Collection Area Ac (L X W) + 2 x (L x H) + 2 2 x (W+H) + pH = 2372.39 = Ac x Ng x 10 73 6.9 0.016369486 0.000010. -6.
Lightning Protection Risk Assessment Calculator - Calculate The …
WebCalculate No of Down Conductor for Lightning Protection Area of Building / Structure: Length of Building (L) = 60 Meter. Width of Building ( W ) = 28 Meter. Height of Building (H) = 23 Meter. Lightning Stock Flushing Density Number of Thunderstorm (N)= 80.00 Days/Year Lightning Flash Density (Ng)=69 km2/Year WebJune 13th, 2015 - Lightning Protection Risk Assessment Calculator Excel Spreadsheet These calculations are according to Lightning Protection Risk Assessment Calculator www phasorlabs com April 27th, 2024 - Fault2 excel Calculating Short Circuit kVA Base MVA selected for calculations MVA Base kV for R1 in pu X1 in pu the section Section 1 ... refresh excel pivot table
Design Calculations of Lightning Protection Systems – Part …
WebJun 14, 2015 · Lightning Protection Level, Surge Arrestor and; Dimensions of installation. ... Electrical Pole’s Transverse Loads Calculation (Excel Spreadsheet) Jun 23, 2015 WebThe lightning protection design process involves a number of design steps as in Fig.1. Fig.1: The Lightning Protection Design Process Step#1: Characteristics of the Structure to Be Protected Step#2: Risk Assessment Study Methods Of Calculations For Risk Assessment Study The risk assessment study can be done by (4) different methods as follows: WebMay 5, 2011 · If the Nd/Nc ratio is less than 1.0, then a lightning protection system is not required. LIGHTNING RISK ASSESSMENT EXAMPLE. In this example, we need to determine if a new structure that we are designing should have a lightning protection system based on the following parameters: Table 5. Consquence of interruption of service to the structure. 1. refresh exchange global address list