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 testing and failure analysis of chassis condensers.
| Identifier | ExFiles\Box 34\1\ Scan184 | |
| Date | 3rd March 1920 | |
| X.2672 BY3/H.{Arthur M. Hanbury - Head Complaints} 3. 3. 20. ------------------- C. Ck.{Mr Clark} ----- X.2672. CHASSIS - CONDENSERS. -------------------------- With reference to Mr.Turner of the B.E.C's visit to our Works, I regret that up to the moment I have had no time to summarise the position. The following represents what I consider should be our attitude in the matter under discussion We received two condensers on either the 15th or 16th of February, both of these broke down on test. The two condensers were made up to our overall dimension in two different ways, one by means of an extra brass packing, the second by increasing the mica thickness. The latter is the method we prefer. One condenser broke down under 350 Volts A.C. the other under 400 Volts A.C. Neither of these were flashed. With reference to the further consignment of 12 more condensers, which we received on the 19th February, the position in regard to these is as follows:- One of these, number 6, broke down on the 350 volts A.C.Test, without flashing, within 10 seconds. The remaining 11 were put on the 400 Volts A.C.Test, which they stood until they were flashed. In flashing same, by switching on and off, at this voltage, the following numbers failed:- 1, 2, 4, 5, 7, 10, and 11. In regard to the remaining four, namely, Numbers 3, 8, 9, and 12, these stood up and were also satisfactory as | ||