| (19) |
 |
|
(11) |
EP 0 420 479 A3 |
| (12) |
EUROPEAN PATENT APPLICATION |
| (88) |
Date of publication A3: |
|
17.06.1992 Bulletin 1992/25 |
| (43) |
Date of publication A2: |
|
03.04.1991 Bulletin 1991/14 |
| (22) |
Date of filing: 19.09.1990 |
|
| (51) |
International Patent Classification (IPC)5: H01B 13/32 |
|
| (84) |
Designated Contracting States: |
|
AT BE CH DE DK ES FR IT LI LU NL SE |
| (30) |
Priority: |
27.09.1989 GB 8921776
|
| (71) |
Applicant: ASSOCIATED ELECTRICAL INDUSTRIES LIMITED |
|
London W1A 1EH (GB) |
|
| (72) |
Inventor: |
|
- Murphy, Richard John
Liverpool L 15 5EL (GB)
|
| (74) |
Representative: Sperling, David (GB) |
|
87 Hendon Way
GB-London NW2 2LY
GB-London NW2 2LY (GB) |
|
| |
|
| (54) |
Methods of protecting bare overhead conductors |
(57) A method of protecting a bare overhead conductor wherein a grease composition containing
a plastics agent cross-linkable under the influence of ultra-violet radiation is applied
to the conductor during its fabrication. The conductor when secured in place overhead
is exposed to the ultra-violet radiation present in sunlight which causes cross-linking
of the plastics agent present at the surface of the grease composition exposed to
the sunlight, and thereby hardening of the grease composition at this surface. Such
hardening prevents denudation of the conductor of the grease composition.