Test results for electrical windings, including continuity, quantities, and heating tests.
| Identifier | ExFiles\Box 164\5\ img073 | |
| Date | 17th August 1931 guessed | |
| -2- (1) Continuity of windings :- OK (2) Winding quantities :- Primary resistance 1.00 ohms at 20 °C. Ballast " 2.53 " " 18 " Secondary " 5193 " " 19 " Primary impedance at 50 cycles. 3.77 ohms " Secondary -ditto- 17900 " Primary inductance .0115 henries Secondary " 54.3 " (3) Open circuit test :- (4) Open secondary circuit primary current :- amperes Short " " " :- amperes (5) Preliminary heating tests. (a) Secondary resistance after test :- 6520 ohms Corresponding temperature :- 84 °C. Primary current at end oftest :- 1.13 amperes Ambient temperature :- 23 °C. (b) Secondary resistance after test :- 6480 ohms. Corresponding temperature :- 82 °C. Primary current at end of test :- 1.85 amperes Ambient temperature :- 16.5 °C. Secondary resistance at 0°C. = 4810 ohms. | ||
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).