Superseded
Standard
Historical
UNE 21820:1989
ELECTRICAL APPARATUS FOR POTENTIALLY EXPLOSIVE ATMOSPHERES. INTRINSIC SAFETY "I".
No description.
Technical characteristics
| Publisher | Asociacion Espanola de Normalizacion y Certificacion (AENOR) |
| Publication Date | 05/22/1989 |
| Cancellation Date | 02/05/1997 |
| Page Count | 38 |
| EAN | --- |
| ISBN | --- |
| Weight (in grams) | --- |
No products.
Previous versions
16/02/1994
Superseded
Historical
29/12/1993
Superseded
Historical
29/12/1993
Superseded
Historical
29/12/1993
Superseded
Historical
22/05/1989
Superseded
Historical