Protection by earthed equipotential bonding and automatic disconnection of supply is the most common measure. Its purpose is that under earth fault conditions, voltages between simultaneously accessible parts are not of such magnitude and duration as to be dangerous. High-voltage systems require a ground-ing system that will reliably protect people from the effects of short cir-cuits to earth and ground faults. 3: (i) Automatic disconnection of supply (Section 411) (ii) Double or reinforced insulation (Section 412) (iii) Electrical separation for the supply to one item of current using equipment. This step-by-step guide describes the basic concept of double pulse testing (DPT) and the necessary measurement setup and provides an overview of the parameters influencing the measurement. Learn about the practical tips for carrying out the measurements. Protective bonding is a basic provision for fault protection to enable protection of persons against electric shock. – Induced currents from lightning which could damage the electric equipment.
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