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).
The method of charging for electricity supply to the works and the implications for power factor improvement.
| Identifier | ExFiles\Box 76\2\ scan0086 | |
| Date | 11th December 1924 | |
| X632 To R.{Sir Henry Royce} from EFC. Copy to BJ. Wor.{Arthur Wormald - General Works Manager} Hy.{Tom Haldenby - Plant Engineer} EFC1/T11.12.24. RE ELECTRICITY SUPPLY TO THE WORKS. In further answer to your R4/M29.11.24, we have now been thoroughly into this matter. It is the case that all the meters on the Works' supply are true watt meters, so that what we pay for is actual power, irrespective of power factor. Thus any move to improve the power factor of the load would only benefit the Supply Co. It is understood to be increasingly the case, and particularly in the north of England, that the Power Cos., are charging their new consumers on an ampere-hour basis, putting it up to them at the same time that it is to their advantage to improve their own power factor by the installation of static or of synchronous rotary condensers, which improvement has been effected in a good many cases to the advantage of the consumers who do it. It is understood that as we are consumers of long standing, such a method of charging would not be entertained in our case, but it might be in the case of new large consumers on the Derby supply. EFC. | ||