Why is PVC used for electrical fittings

General information on the material polyvinyl chloride (PVC)

Polyvinyl chloride (PVC) - thermoplastic plastic

The areas of application of this thermoplastic in the plastics processing industry are varied. In the cable industry, there are different PVC mixtures for the corresponding areas of application for cables and wires. National (e.g. VDE) and international (e.g. IEC) standardization authorities have specified compound types with very specific properties for a wide variety of application areas and thus created suitable basic types for standard applications. For example, the properties of standardized PVC mixtures for the cable industry are specified in the following VDE regulations:

  • PVC insulation compounds EN 50363-3, VDE 0207-363-3
  • PVC sheath mixture EN 50363-4, VDE 0207-363-4-1

The hard PVC produced during polymerization is unsuitable as an insulating and sheathing material for cables and wires. The mechanical, thermal and electrical level of properties required for such materials and at the same time good processability is only achieved through additives. The most important additives are:

  • Plasticizers
  • Stabilizers
  • Fillers
  • lubricant

 

Materials

1. SAB-PVC special (Y)

We use our special PVC (YA and YM) for the insulation and sheathing of cables. The PVC YA for core insulation is characterized by particularly good electrical values ​​and high flexibility. The PVC YM as jacket material offers good mechanical values ​​and high flexibility. The temperature range is:

not moved:-40 ° C to + 70 ° C
emotional:+ 5 ° C to + 70 ° C

 

2. SAB-PVC cold-resistant (YK)

Cold-resistant PVC has good flexibility and mechanical strength even at sub-zero temperatures. This type of PVC can be exposed to a wide variety of weather conditions. The temperature range is:

not moved:-40 ° C to + 70 ° C
emotional:-20 ° C to +70 ° C

 

3. SAB-PVC heat resistant (YW)

Heat-resistant PVC withstands temperatures up to a maximum of +105 ° C. The insulation and sheathing is characterized by good electrical and mechanical values ​​and very good heat resistance. The highest permitted operating temperature on the conductor is +90 ° C according to VDE 0207. If used above this temperature, the service life is reduced. The temperature range is:

not moved:-40 ° C to + 90 ° C
emotional:+ 5 ° C to +90 ° C
brieflyup to + 105 ° C

 

4. SAB-PVC oil-resistant (YOE)

Oil-resistant YOE, TM5, according to EN 50363-4-1 + VDE 0207-363-4-1. This type of PVC is often only used as a jacket material, but this material can also be used as an insulation material. The temperature range is:

not moved:-40 ° C to + 70 ° C
emotional:+ 5 ° C to +70 ° C

 

Due to its chemical structure, PVC is a flame-retardant material. SAB PVC mixtures meet the requirements for the burning behavior according to IEC 60332-1-2 + VDE 0482-332-1-2), UL VW1, CSA FT1 and FT2. However, in the event of a fire, halogens are released that can pose a risk to people, nature, buildings and machines. In addition, the PVC control and data cables are not suitable for laying outdoors.

 

Exemplary areas of application for PVC cables

PVC cables are used for control devices, e.g. on machine tools, assembly lines, conveyor systems, production lines and in plant construction, switch cabinet construction, devices and equipment for communication technology, household appliances, generator, transformer and machine construction, switch and control construction, electrical, Installation and packaging technology, textile, woodworking and machine tool construction, electrical and data processing, in cleaning equipment, automotive industry, automation technology, press and mold construction, printing and paper machine construction, surface technology, iron and steel production industry, beverage filling systems, chemical industry, for intrinsically safe circuits, on control devices in potentially explosive areas, CNC machining centers, lamps and lighting technology, ...

 

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