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).
Instructions for leakage tests of coil-cases moulded in Redmanol.
| Identifier | ExFiles\Box 45\4\ Scan302 | |
| Date | 30th August 1926 | |
| RR 286 (150 BKS.) (SH57.29-6-26.) MP 22435R ROLLS-ROYCE LTD. INSTRUCTIONS. To: EFC Order No.: AC.78 Customer's No.: X Leakage Tests of Coil-Cases. Six coil-cases moulded in Redmanol were received from Messrs Brook for testing together with a similar one of our own and a standard stabilite case. The object of the test was to find the electrical leakage through the material at various temperatures. A 2500 volt (RMS) tapping from the high-tension transformer was taken through a thermionic valve, (used as a two-electrode rectifying valve, with grid and anode connected together) and a d.c. box instrument, to a tin-foil Signed (cont-d) This Sheet must be filed on completion of the work. | ||