Selection, installation and maintenance of electrical apparatus and associated equipment for use in explosive atmospheres - Other than mining applications, Part 4: Apparatus with type of protection
Methods of testing soils for engineering purposes, Method 3.5.1: Soil classification tests - Determination of the soil particle density of a soil - Standard method
Electromagnetic compatibility (EMC) - Part 2-8: Environment - Voltage dips and short interruptions on public electric power supply systems with statistical measurement results (IEC/TR 61000-2-8:2002)
Electromagnetic compatibility (EMC) - Part 3: Limits - Section 6: Assessment of emission limits for distorting loads in MV and HV power systems - Basic EMC publication (IEC/TR 61000-3-6:1996)
Safety requirements for electrical equipment for measurement, control, and laboratory use - Part 3: Protocol for the preparation of conformity verification reports for the IEC 61010 2nd edition series .