The term refers to a standardized withstand voltage, expressed in kilovolts, assigned to electrical equipment. This value signifies the ability of the insulation within that equipment to reliably withstand designated voltage surges and overvoltages without failure or disruptive discharge. For instance, a transformer with a specified value can safely endure transient voltage spikes originating from lightning strikes or switching operations without experiencing insulation breakdown.
Adherence to the standardized withstand voltage is crucial for ensuring the reliable and safe operation of electrical power systems and equipment. It prevents premature aging and failure of insulation, thereby extending the lifespan of the equipment and minimizing the risk of outages or hazardous conditions. Establishing a benchmark for insulation performance dates back to early efforts to standardize electrical safety practices, aiming to create safer and more compatible electrical systems across different manufacturers and regions.
