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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).
Testing procedures for condensers, detailing checks for static charge, capacity, and sparking.

Identifier  ExFiles\Box 168a\5\  img019
Date  1st September 1927 guessed
  
Contd. -2-

(7) The capability of holding a static charge should again be verified.

(8) The condenser should again be tested for final capacity, when the milliamperes taken at 200 volts 50.7~ for a condenser temperature of 18°C. shall lie between the limits 17.5 and 21.0. For other atmospheric temperatures, the limits must be increased or reduced proportionally at the rate of 1.5% per °C.

(9) These allowable limits should also be increased or reduced proportionally if the voltage is not exactly 200.

Note:- Corresponding capacity limits at 18°
.275 to .325 mf.

(9) The condensers should be given a short run on an otherwise standard distributor and sparking rig, with a view to observing the degree of sparking at the contact points.

A condenser with a faulty connection will generally shew bad sparking.

(10) The capacity of the condenser should be checked at a temperature of 45°C and should fall within the limits .41 and .52 mf. It should also be ascertained that at this temperature, the condenser is still capable of holding a static charge for a time long enough to observe this on causing the condenser to discharge.


EFC.
  
  


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