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References in periodicals archive ?
Equipment must conform to the demanding environment conditions found in these locations such as electric and magnetic fields, electrostatic discharge, conducted high frequency electrical transients, high energy power surges and ground potential rise during ground faults.
The ground resistance, the ground potential rise, touches and step voltages are the basic design quantities of the grounding grids.
A good earthing grid has low resistance (with respect to remote earth) to minimize ground potential rise (GPR) and consequently avoid dangerous touch and step voltages.
When electricity is generated remotely and there are no return paths for earth faults other than the earth itself, then there is a risk that earth faults can cause dangerous voltage gradients in the earth around the site of the fault (called ground potential rises).
Beginning with a discussion of electrical power system fundamentals, the work covers topics such as ground potential rise and zone of influence, critical telecommunications circuits in high voltage locations, high voltage protection equipment, level III equipment installation and testing, and personnel safety with high voltage protection equipment.
Most of the electronic equipment damage is caused by ground potential rise. Electrical damage from ground potential rise (GPR) has an estimated cost in the millions of dollars a year, but few field engineers or service managers in the industry are even aware of the phenomenon [4].
However, no surge protective device ever made will protect electronic equipment from a ground potential rise [4, 9].
This is the ground potential rise of the primary electrode (i.e.
After application of the grid analysis module, we obtained the result for the ground potential rise which is 492.205 V.
When the uphill tower was impacted by a lightning strike, the energy wave, or ground potential rise (GPR), would pass through the downhill site with multiple grounds, causing equipment to rise and fall at various times and inducing damage." To correct the condition, Duckworth recommended a three-step plan.
Touch voltages over the grid are a small fraction of tile pipeline/grid ground potential rise.
develops and manufactures equipment designed to protect against damage from lightning ground currents, also known as lightning ground potential rise. Alset sells its equipment both directly and through a network of manufacturer's representatives and resellers.