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).
Order request for a single-phase oil-cooled transformer and transformer oil for testing insulating material.
| Identifier | ExFiles\Box 32\4\ Scan043 | |
| Date | 24th August 1922 | |
| Copy to EFC. COPY. X.1581. Re - Electrical - Experimental Dept. Testing of Insulating Material. Wd.{Mr Wood/Mr Whitehead} from EJJ EJJ1/HC24.8.22. Please order from Messrs Mitchell's :- 1 - Single Phase Oil Cooled Transformer for 200 volts at 50 cycles with an output of 1 K.V.A. Secondary with taps off at 5,000, 10,000, and 20,000 volts in the outers. £25 nett. 15 - Gallons of Transformer Oil 4/- per gall. Delivery in 4 to 5 weeks. Quotation and correspondence referring to this matter attached. Also BJ's authority, which should be returned to "B" Department. NOTE :- Single phase frequency altered by Corporation from 42 to 50 on 25/8/22. EJJ. EJJ. | ||