From the Rolls-Royce experimental archive: a quarter of a million communications from Rolls-Royce, 1906 to 1960's. Documents from the Sir Henry Royce Memorial Foundation (SHRMF).
Conclusions page discussing the quality of mouldings and the need for improved systematic testing.
| Identifier | ExFiles\Box 61\1\ scan0131 | |
| Date | 24th September 1930 guessed | |
| -7- Conclusions. The writer's own experience of these mouldings, extending over many years, has shown him that the quality of moulding turned out generally is always improving and that at the present time mouldings from a compound point of view are generally 60% perfect, but that degree of perfection is not sufficiently good for high-voltage work or for radio work when maximum service is required. The lack of efficient testing equipment in the majority of moulding works is lamentable, as so much can be learned by systematic testing thus the time of discharge of a condenser mounted in a moulded case resulted in this research. Similarly, all users should ensure by tests that all synthetic mouldings are up to a standard that will ensure good service. The wide variation in the properties of the substance, resulting from its manufacturing history makes it more necessary in this case than in many others. All synthetic mouldings can be good, and so will assist in the growth of the industry, but little advance will be made towards that perfect insulator without further tests, specification and research. | ||