Need to know if the power part with IP54 degree of protection (where is placed the heatsink), of Altivar 71 and 31 is proof (resistant) against the following chemical compound: NPK 8/24/24 - PK 9x36 - UREA 46% N - H8 N2 O4S - PK 14x24 - PK 20x20 - Mg SO4 7 H2O - KC1 60% K2O - K2 SO4 50% K2O - (NH4) 2 HPO4 - NH4 H2 PO4 - Ca (H2 PO4) 2 and "ammonium nitrate" with a percentage of nitrogen.

heatsink

Attached is a document with the protection against gasses for our drive. The standard IEC721-3-3 is taken as a reference.