Performance test report for a cut-out device on a standard 30 HP chassis charging system.
| Identifier | ExFiles\Box 50\1\ Scan113 | |
| Date | 1st March 1926 | |
| nb 238 (150 BKS.) (SH57.29-6-20.) MP 224350 X. 1810 ROLLS-ROYCE LTD. INSTRUCTIONS. To: EFC {E. Fowler Clarke - Electrical Engineer} Order No.: AC. 70. Customer's No.: X 4105. 1 March 1926 Performance of RR Cut-out on Chassis System. A cut-out (No RE.55.X) made up with the latest modifications embodying .150" week, sprung point having rigid backing & the fixed point a rigid support, has been tested on a standard 30 h.p chassis charging system. The cut-out was set to operate cold at 12.5 volts. then at 11.8 volts it de-operated with 1-1/2 reverse current. The dynamo was then run at peak output for several hours, whilst the cut-out was covered up to protect it from draughts. After this a test Signed: (Cont'd) This Sheet must be filed on completion of the work. | ||
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).