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).
Comparison of the electrical and mechanical properties of cartridge fuses versus other link types.
| Identifier | ExFiles\Box 166\7\ img043 | |
| Date | 18th January 1935 | |
| -4- Hs{Lord Ernest Hives - Chair}/Wat.1/WA.{Mr Wallis}18.1.35. Cont'd.{John DeLooze - Company Secretary} With the cartridge type, care would have to be taken to keep the wire central in the glass tube, and fairly straight, otherwise there would be danger of the valve of the fusing current being cooled as the result of it bowing out and touching the glass. The use of this fuse will also involve some alteration to the present distribution board. Generally it may be said that electrically, the links appear to be better, i.e. :- (1) They appear to have a consistent fusing point. (2) They do not oxidise and therefore should be more consistent. (3) They have a lower volt drop, and moreover, this does not rise so rapidly with temperature. (4) They are safer on blowing. On the other hand they are not so good mechanically, i.e. :- (1) Care has to be taken in fitting them to avoid damaging. (2) Being exposed they are perhaps, more likely to sustain damage which will escape notice. The cartridge type are not so good electrically but their disadvantages, if made carefully, and a high melting point solder used, are small compared with the advantage of their robustness, and less chance of their being damaged in such a manner as to weaken them. Hs{Lord Ernest Hives - Chair}/Wat. | ||