Eristysetäisyydet

Eristysetäisyydet, often translated as insulation distances or clearance distances, refer to the minimum spatial separation required between electrical conductors and other conductive or non-conductive objects to prevent electrical breakdown, such as arcing or flashover. These distances are crucial for ensuring the safe operation of electrical equipment and systems and for protecting people from electric shock.

The determination of appropriate eristysetäisyydet is governed by various standards and regulations, which take into account factors like the operating voltage of the system, the degree of pollution or environmental conditions, and the material properties of the insulating substances. Higher voltages generally necessitate larger eristysetäisyydet. Similarly, environments with high humidity, dust, or corrosive substances will require increased clearances to maintain adequate insulation.

These distances are specified for different parts of an electrical installation, including between live conductors, between live conductors and earth, and between conductors of different phases. They are essential considerations during the design, installation, and maintenance of electrical infrastructure, from power transmission lines to household wiring. Adherence to these specified distances is a fundamental aspect of electrical safety engineering.