NA 109
DIN Standards Committee Petroleum and Natural Gas Industries
DIN EN ISO 21857 [CURRENT] references following documents:
| Document number | Edition | Title |
|---|---|---|
| IEC/TR 60479-5 | 2007-11 | Effects of current on human beings and livestock - Part 5: Touch voltage threshold values for physiological effects More |
| IEC/TS 61201 | 2007-08 | Use of conventional touch voltage limits - Application guide More |
| ISO 14688-1 | 2017-12 | Geotechnical investigation and testing - Identification and classification of soil - Part 1: Identification and description More |
| ISO 18086 | 2019-12 | Corrosion of metals and alloys - Determination of AC corrosion - Protection criteria More |
| ISO 22426 | 2020-02 | Assessment of the effectiveness of cathodic protection based on coupon measurements More |
| UL 1741 | 2021-09-28 | Inverters, Converters, Controllers and Interconnection System Equipment for Use With Distributed Energy Resources More |
