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Technical Section |
Voltage Designation |
Nominal Voltage- The characteristic operating voltage of a wire or cable that is referenced to define its electrical rating. The nominal voltage in European applications is expressed by the combination of two values expressed by the designations Uo/U, where: Uo: The voltage between any insulated conductor and shield or ground. U: The voltage between any two conductors of a multi-conductor cable. Example 1: P/N 26157- The nominal voltage is expressed as 300/500 V. How do these values correspond to one another? The first voltage always refers to Uo, the second refers to U. Therefore; Uo: 300 V, voltage between any insulated conductor and shield ground.
Example 2: P/N 26157- We know the Uo= 300 V and U = 500 V from the above example. The estimated DC voltage would be as follows: Uo: 300 Vac x 1.5 = 450 Vdc |
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© 2012 Lapp Group |
Lapp Group is not affiliated with Lapp
Insulator.
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