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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).
Fault diagnosis report detailing an intermittent break and partial shortcircuit in a secondary winding.

Identifier  ExFiles\Box 46\3\  Scan189
Date  11th September 1923 guessed
  
RR 238 (300 Bks.) (SF 152. 6-11-18.) MP 197880

ROLLS-ROYCE LIMITED.
INSTRUCTIONS.

To

Order No. PB 116 (2)
Customer's No.

current taken, within the limit. A little later however, when repeating this test the needle of the instrument became very unsteady and by the way in which it rose and fell, it indicated an intermittent partial shortcircuit on the secondary winding.
From this it appears that the fault is an intermittent break and partial shortcircuit in the secondary winding.

Signed C.A.P
This Sheet must be filed on completion of the work.
  
  


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