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Standard
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BS 519:1933
Tractive armature direct-current nuetral-polar line relays
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Technical characteristics
| Publisher | British Standards Institution (BSI) |
| Publication Date | 03/01/1938 |
| Page Count | 0 |
| EAN | --- |
| ISBN | --- |
| Weight (in grams) | --- |
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Previous versions
14/07/1950
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01/03/1938
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