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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).
Test procedures for a motor, including light, load, and intermittent load tests.

Identifier  ExFiles\Box 62\1\  scan0207
Date  16th November 1933 guessed
  
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(d) See that the insulated terminal on the carcase is not loose.

TEST 1.
Light Test.

The motor shall be run light for a period of half an hour with a voltage of 4.5 across its terminal to earth.
Towards the end of the run the current taken must not exceed 21 amperes.

The motor speed will be in the neighbourhood of 4500 R.P.M. but the speed need not be observed on this test.

TEST 2.
LOAD TEST.

The motor, loaded up by means of a brake, shall now be run from a 12 volt battery of ample capacity, the brake torque being adjusted until the current taken is 150-1 amperes, and the motor run for 5 minutes with a current within these limits. The voltage across the motor shall be adjusted to 9.0-.1 volts. During the last minute of the test the torque shall be 40 to 41.5 lb-inches and the speed must not be less than 1575.

TEST 3.
INTERMITTENT LOAD TEST.

(This test will consist of switching the motor on and off intermittently under load (about 10 secs. on and 10 secs. off) for a period of 3 minutes.) During the test the motor should be observed for satisfactory general starting and running (particular the commutator and brushes
  
  


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