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SynTherm® – Insulating Materials

SynTherm® VPV

SynTherm® VPV is a flexible 3-ply insulating material made of polyester film with a layer of polyester non-woven on both sides.

Attributes

SynTherm® VPV is an insulating material without additional impregnants, which can be used for insulation class F (155 °C) systems after through impregnation with varnishes or resins of the corresponding insulation class. The ability of the non-woven layers to absorb impregnants results in outstanding saturation of the slot surfaces and exceptional bonding of all winding components with the laminated core.

SynTherm® VPV is characterised by its high resistance to moisture and chemicals and excellent dielectric strength. The smooth surface of the SynTherm® VPV makes the material ideal for machining.

Application

SynTherm® VPV is used as slot insulation and phase insulation in electric machines. SynTherm® VPV is used as interlayer insulation and final insulation in transformers.

Standards
  • Suitable for insulation class F 155 °C systems after impregnation with high quality class F or H varnishes or resins (file-no. E247773)
  • RoHS compliant according to 2011/65/EU
Delivery forms

Film thickness in μm:
120, 150, 180, 200, 230, 300, 350, 450

SynTherm® VPV can be supplied:
- in slit rolls from widths of 10 mm and above
- in rolls approx. 630 mm or 1,260 mm
- in sheets approx. 630 mm x 800 mm or
                approx. 800 mm x 1,260 mm

Feathering:
- depth approx. 1 - 12 mm, distance approx. 1 - 10 mm
- from widths of 10 to 240 mm and thickness of 0.23 mm

Base

PET-film + polyester non-woven on both sides

Technical data
Mechanical
Nominal thickness  Thickness tolerance max.  Specific weight  Film thickness  Tensile strength longitudinal  Tensile strength transversal  Elongation at break (unfold) longitudinal  Elongation at break (unfold) transversal 
Unit of measure                
mm  0.12 0.15 0.18 0.20 0.23 0.30 0.35 0.45
± 15 ± 15 ± 15 ± 15 ± 15 ± 15 ± 10 ± 10
g/m²  115 143 190 220 260 350 425 555
µm  23 50 75 100 125 190 250 350
N/mm²  85 80 80 90 90 100 100 110
N/mm²  60 60 80 90 90 90 90 120
25 30 30 25 25 25 30 120
50 70 70 75 75 75 80 120
Electrical
Nominal thickness  Dielectric strength (unfold) 
Unit of measure                
mm  0.12 0.15 0.18 0.20 0.23 0.30 0.35 0.45
kV  5 7 8 11 14 19 24 26

SynTherm® is a registered trademark of SynFlex.

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Corona information, 31.03.2020

Dear business partners,

Despite the progressing corona pandemic, we as SynFlex have succeeded to date in maintaining our business operations at all locations. We offer our customers the accustomed high level of service in terms of delivery flexibility and advisory competence and we maintain existing agreements with our suppliers. Our staff currently provide excellent services despite the many precautionary measures necessary to protect everyone's health. They are fully available to you, in administrative areas usually from a home office.

It remains to be seen how things will continue. Crisis management dominates. It is simply impossible to make serious forecasts about future economic and social changes. All forecasts are plain guessing.

Thus, the resolutions remain: maximum solidarity, responsible action and best possible maintenance of all structures. There will be a time after SARS-CoV-2!

In this spirit we wish you all much steadfastness and good health.

Your SynFlex Team