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UNE 21136-20:1993
ELECTRICAL RELAYS. PROTECTION (PROTECTIVE) SYSTEMS.More info
| Author | AENOR |
|---|---|
| Editor | AENOR |
| Document type | Standard |
| Format | File |
| ICS | 29.120.70 : Relays |
| Number of pages | 25 |
| Cross references | IEC 255-20:1984 Identical |
| Year | 1990 |
| Country | Spain |