Classification of environmental conditions, part 2: environmental conditions appearing in nature, section 8: fire exposure.

NEPLATNÁ vydána dne 1.11.1993

Amendment No. 4 to IEC 721-3-3; classification of environmental conditions; classification of groups of environmental parameters and their severities; stationary use at weatherprotected locations; addition to table 2: high air temperature; low air pressure.

NEPLATNÁ vydána dne 1.11.1993

Amendment No. 3 to IEC 721-3-4; classification of environmental conditions; classification of groups of environmental parameters and their severities; stationary use at non-weatherprotected locations; addition to table II: low air pressure.

NEPLATNÁ vydána dne 1.11.1993

Amendment No. 2 to IEC 721-3-5; classification of environmental conditions; classification of groups of environmental parameters and their severities; new table IA and introduction of values in table VI.

NEPLATNÁ vydána dne 1.11.1993

Amendment No. 3 to IEC 721-3-7; classification of environmental conditions; classification of groups of environmental parameters and their severities; portable and non-stationary use; addition to table II: high air temperature; low air pressure.

NEPLATNÁ vydána dne 1.11.1993

Amendment No. 1 to IEC 721-3-9; classification of environmental conditions; part 3: classification of groups of environmental parameters and their severities; section 9: microclimates inside products; introduction in table 1 of severity 75 % for class Y2 (limited relative humidity).

NEPLATNÁ vydána dne 1.5.1994

Amendment No. 2 of IEC 60721-1: classification of environmental conditions; part 1: environmental parameters and their severities; table 1 item 7: electromagnetic disturbance.

NEPLATNÁ vydána dne 1.7.1994

Classification of environmental conditions - Amendments to sections 1 to 7 of IEC 60721-3: Classification of groups of environmental parameters and their severities, introducing climatic classes for tropical areas.

NEPLATNÁ vydána dne 1.11.1994

Second draft; publication 721-3: application of classified environmental parameters and their severities; 721-3-3: stationary use, including handling during use and service, at weather-protected locations.

NEPLATNÁ vydána dne 1.7.1982

Second draft; publication 721-3: application of classified environmental parameters and their severities; 721-3-4: Stationary use, including handling during use and service, at locations not weather-protected.

NEPLATNÁ vydána dne 1.7.1982