The earthing system in a plant / facility is very ...

The earthing system in a plant / facility is very important for a few reasons, all of which are related to either the protection of people and equipment and/or the optimal operation of the electrical system. These include: Equipotential bonding of conductive objects (e.g. metallic equipment, buildings, piping etc) to the earthing system prevent the presence of dangerous voltages between objects (and earth). The earthing system provides a low resistance return path for earth faults within the plant, which protects both personnel and equipment For earth faults with return paths to offsite generation sources, a low resistance earthing grid relative to remote earth prevents dangerous ground potential rises (touch and step potentials) The earthing system provides a low resistance path (relative to remote earth) for voltage transients such as lightning and surges / overvoltages Equipotential bonding helps prevent electrostatic buildup and discharge, which can cause sparks with enough energy to ignite flammable atmospheres The earthing system provides a reference potential for electronic circuits and helps reduce electrical noise for electronic, instrumentation and communication systems This calculation is based primarily on the guidelines provided by IEEE Std 80 (2000), "Guide for safety in AC substation grounding". Lightning protection is excluded from the scope of this calculation (refer to the specific lightning protection calculation for more details). Why do the calculation? The earthing calculation aids in the proper design of the earthing system. Using the results of this calculation, you can: Determine the minimum size of the earthing conductors required for the main earth grid Ensure that the earthing design is appropriate to prevent dangerous step and touch potentials (if this is necessary) When to do the calculation? This calculation should be performed when the earthing system is being designed. It could also be done after the preliminary design has been completed to confirm that the earthing system is adequate, or highlight the need for improvement / redesign. Ideally, soil resistivity test results from the site will be available for use in touch and step potential calculations (if necessary). When is the calculation unnecessary? The sizing of earthing conductors should always be performed, but touch and step potential calculations (per IEEE Std 80 for earth faults with a return path through remote earth) are not always necessary. For example, when all electricity is generated on-site and the HV/MV/LV earthing systems are interconnected, then there is no need to do a touch and step potential calculation. In such a case, all earth faults would return to the source via the earthing system (notwithstanding some small leakage through earth). However, where there are decoupled networks (e.g. long transmission lines to remote areas of the plant), then touch and step potential calculations should be performed for the remote area only When to do the calculation? The calculation should be done when the earthing system is being designed. It could also be design after the preliminary design has been completed to confirm that the earthing system is adequate, or highlight the need for improvement / redesign. Ideally, soil resistivity test results from the site will be available for use in touch and step potential calculations (if necessary). HARYANA Earthing supplier in Ambala Maintenance free earthing in Asankhurd Chemical Earthing supplier in . Assandh Copper earthing electrode . Ateli Gi Earthing electrode Bahadurgarh Barwala Earthing Manufcturer Earthing Supplier in Bawal All type of earthing system. Bawani Khera Bhiwani Electrical earthing system Lightning protection earthing Bilaspur We are supplier of earthing in Buria Earthing Distrbutor in Charkhi Dadri Chemical earthing electrode Cheeka Pipe type earthing system in Chhachhrauli Supplyin all type Earthing in Dharuhera Dundahera Earthing Material supplier Copper bonded earthing Farakhpur All type of Plate earthing in Faridabad Earthing material supplier in . Farrukhnagar SN Earthing Fatehabad Advance Earthing Ferozepur Jhirka Earthing BFC Compound Ganaur Earthing Backfill compound Gharaunda Earthing BFC supplier in Gohana Chemical earthing supplier and installation in Gurugram ( Gurgaon) Installation of chemical earthing Haileymandi Earthing Supplier in Hansi Earthing installation work Hassanpur All Earthing material Hathin Earthing electrode supplier in Hisar Chemical earthing product in Haryana, Lightning Protection Indri , Maintenance free earthing Jakhalmand, ESE Lightning Arrester supplier in Jhajjar Jind Earthing material Earthing Julana Earthing Manufacturer in Kaithal Supplier of earthing in Kalanaur Chemical earthing Kalanwali Earthing strip supplier Kalayat Hub of earthing in Kalka GI Plate earthing Kanina Earthing strip and wire Kansepur Gi Chemical earthing 50mm 3 mtr Kardhan GI chemical earthing 76mm dia 3 mtr and two mtr Karnal 17.2mm copper bonded rod Kharkhoda 5/8 250 micron steeled copper bonded rod Ladrawan B class pipe earthing system Ladwa Copper earthing electrode Loharu Pipe in pipe earthing system Maham Copper bonded earthing 80mm dia 3 mtr long Mahendragarh Copper bonded earthing 50mm 3 mtr Mandi Dabwali 40mm copper bonded earthing Mustafabad 250 micron copper bonded earthing Nagal Chaudhry 120 micron copper bonded Naraingarh Galavanized earthing Narnaul 5 spike copper lightning arrester Narnaund Trishul type lightning arrester for chimney Narwana Tercel Lightning Arrester Nilokheri Tercel TZ 20 model Lightning Arrester Panchkula SN earthing, Lighting Protection in Panipat Earthing copper and Gi Pataudi Chemical earthing in Pehowa Copper plating earthing system Pinjore Zinc coating earthing in Punahana GI 40mm pipe electrode earthing Pundr 50mm dia 2 mtr earthing Radaur Copper earthing 50mm 2mtr Raipur Rani Copper bonded earthing 17.2mm 2mtr Rania K type chemical earthing Ratia Tercel TZ63 model lightning arrester Rewar Onay Lightning Arrster Rewari Alltec Lightning arrester and earthing system Rohtak JK earthing in Sadaura LPI Lightning arrester and earthing Safidon Ashlok Earthing in Samalkha Gi Chemical earthing Shahbad Galvanized earthing Sirsa 50mm pipe earthing electrode Siwan Hot dip galvanized earthing Sohna Galvanized zinc coating earthing in Sonipat Earthing strip in Taoru 50mm copper bonded earthing Taraor 80 to100 micron hot dip galavanized earthing Thanesar Gi and copper earthing Tilpat ( Copper bonded earthing Tohana Generator earthing Tosham Transformer earthing Uchana Machinery earthing Uklanamandi Eaquipment Earthing Uncha Siwana Lightning arrester supplier in Yamunanagar