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).
Procedural document outlining various tests to be performed on a motor.
| Identifier | ExFiles\Box 61b\3\ scan0150 | |
| Date | 13th December 1921 | |
| X.543 [crossed out] 86027 13.12.21. X.543 - MOTOR TESTS. Quantities:- Volts. Amps. Speed. Torque. E.H.P. B.H.P. Efficiency. (1) Run motor as separately excited dynamo on open circuit. Find flux - ex. current curve. (2) Run motor light (const. torque). Find how amps. and speed vary with volts. (3) Motor crawling. Find how torque varies with amperes. (Note armature and field resistances). (4) Motor run at various constant speeds. Find variation of torque with amperes for each speed. (5) Motor run loaded with drooping volts. Find variation of amperes, speed etc. with torque. (Ordinary brake test). | ||