5SHY4045L0006 3BHB030310R0001 ABB Silicon controlled module IGCT high voltage control spare parts

Description

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The international reference Standard ruling the installation and calculation of
the current carrying capacity of cables in residential and industrial buildings is
IEC 60364-5-52 “Electrical installations of buildings – Part 5-52 Selection and
Erection of Electrical Equipment- Wiring systems”.
The following parameters are used to select the cable type:
• conductive material (copper or aluminium): the choice depends on cost,
dimension and weight requirements, resistance to corrosive environments
(chemical reagents or oxidizing elements). In general, the carrying capacity of
a copper conductor is about 30% greater than the carrying capacity of an
aluminium conductor of the same cross section. An aluminium conductor of
the same cross section has an electrical resistance about 60% higher and a
weight half to one third lower than a copper conductor.
• insulation material (none, PVC, XLPE-EPR): the insulation material affects the
maximum temperature under normal and short-circuit conditions and therefore
the exploitation of the conductor cross section [see Chapter 2.4 “Protection
against short-circuit”].
• the type of conductor (bare conductor, single-core cable without sheath, singlecore cable with sheath, multi-core cable) is selected according to mechanical
resistance, degree of insulation and difficulty of installation (bends, joints along
the route, barriers…) required by the method of installation.
Table 1 shows the types of conductors permitted by the different methods of
installation.