Standards

CEI EN 50124-1:2001-09

TableTitle
Tab.A.1Rated impulse voltages UNi for circuits not powered by the contact line.
Tab.A.2Rated impulse voltages (UNi) for circuits powered by the contact line.
Tab.A.3Minimum clearances in air (in mm) based on the rated impulse voltage UNi.
Tab.A.4Definition of pollution degrees.
Tab.A.5Minimum creepage distances (in mm) based on rated insulation voltage UNm up to 1000V for printed wiring material and associated components.
Tab.A.6Minimum creepage distances (in mm) for low values of rated insulation voltage UNm for materials other than printed wiring material.
Tab.A.7Minimum creepage distances (in mm/kV) for high values of rated insulation voltage Unm.
Tab.A.8Test voltages for verifying clearances not to be used for routine dielectric tests.
Tab.B.1Dielectric tests for electromechanical equipment connected to the contact line - Short duration power-frequency (a.c.) test levels Ua (kV r.m.s.) based on the rated insulation voltage UNm (kV r.m.s.) and on the rated impulse voltage UNi (kVcrest).
Tab.C.1Pollution degree.
Tab.D.1Correlation between nominal voltages of the railway power distribution system and the required insulation voltages for circuits of equipment which are intended to be connected to these systems.


CEI EN 60529

TableTitle
Tab.I-1Degrees of protection against access to hazardous parts indicated by the first characteristic numeral.
Tab.II-2Degrees of protection against solid foreign objects indicated by the first characteristic numeral.