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).
Test results for capacity breakdown at different temperatures, which were found to be lower than specified limits.
| Identifier | ExFiles\Box 52\3\ Scan201 | |
| Date | 24th March 1925 guessed | |
| RR 238 (100 BKS.) (SH57. 28-6-20.) MP 224395 ROLLS-ROYCE LTD. INSTRUCTIONS. To: E.Y.b. 19 Order No. WA {Mr Wallis} 103 (2) Customer's No. Test on 400 volts for breakdown OK. Capacity at 18°C — .21 m.f. Capacity at 45°C — .19 m.f. It will be observed from the above results that the capacity is much lower than the limits specified these being at 18°C — .275 to .325 m.f. " 45°C — .41 to .52 m.f. Signed: A.E.W. This Sheet must be filed on completion of the work. | ||