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3 Make a written translation of the following:

While epoxy has good thermal characteristics and excellent
adhesion, if not used properly during the manufacturing process, it
can ruin components in a high voltage assembly. Stresses during
the potting process can damage components.
Thermal stresses during equipment operation can also damage
components due to unequal thermal expansion and contraction. In
addition, the epoxy curing process can be highly exothermic and
parts can be damaged by heat generated during curing.
Epoxy modules are unrepairable, so if there is a failure, the
assembly must be discarded.
The other implication is that failure analyses are severely
limited, making it difficult to learn from any problems that crop
up.
4 Decide, whether the following statements are true or false in
relation to the information in the text. Change false statements
into true ones.
1. One implication of homogeneity is that it is generally a
good idea to use more than one insulation material.
2. The amount of derating depends upon the shapes of the
conductors, the insulator height, and the insulator homogeneity.
3. Air has the worst dielectric strength of all the insulators in
this listing, so distances will need to be the greatest for a given
geometry.
4. One difficulty with using SF6 is that the housing must be
hermetically sealed.
5. Thermal stresses during equipment operation do not
damage components due to unequal thermal expansion and
contraction.
6. Unlike epoxy, silicone encapsulation is in widespread use in
the high voltage industry.
7. Thixotropic materials do not flow and remain in whatever
shape they emerge in from the tube.
8. Air bubbles can be trapped in cured thixotropic silicones,
and that is why their use is unlimited.
9. Oil is in widespread use in part due to its relatively low cost
and thermal characteristics.
10. Perfluorinated liquids are clear, colourless, odourless and
have a viscosity similar to water.

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