This European Standard specifies general requirements and tests for conduit systems buried underground for the protection and management of insulated conductors and\/or power cables or communication cables. This European Standard is applicable to conduits with circular cross section. The requirements described in this standard are applicable to all conduits – installed individually or installed as a part of an assembly; – where the cable is installed by pulling or pushing. prEN 50626-2 specifies particular requirements and tests that are required for special applications. NOTE Examples of special applications include special pipe installation techniques, and alternative cable installation techniques are trenchless installation.<\/p>\n
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| 48<\/td>\n | undefined <\/td>\n<\/tr>\n | ||||||
| 54<\/td>\n | 1 Scope 2 Normative references 3 Terms and definitions <\/td>\n<\/tr>\n | ||||||
| 56<\/td>\n | 4 General requirements 5 General conditions for tests <\/td>\n<\/tr>\n | ||||||
| 57<\/td>\n | 6 Classification 6.1 According to mechanical properties 6.1.1 Resistance to compression 6.1.1.1 Type 250 (code 250) 6.1.1.2 Type 450 (code 450) 6.1.1.3 Type 750 (code 750) 6.1.2 Resistance to impact 6.1.2.1 Light (code L) 6.1.2.2 Normal (code N) 6.1.3 Resistance to bending <\/td>\n<\/tr>\n | ||||||
| 58<\/td>\n | 6.1.3.1 Rigid 6.1.3.2 Pliable 6.2 According to resistance to external influences 6.2.1 Protection against ingress of solid objects 6.2.2 Protection against ingress of water 6.2.3 Resistance against corrosion (only applicable to metallic and composite system components) 6.2.3.1 Without protection 6.2.3.2 With protection as detailed in Table 4 6.3 According to resistance to flame propagation 6.3.1 Non-flame propagating 6.3.2 Flame propagating 7 Marking and documentation <\/td>\n<\/tr>\n | ||||||
| 60<\/td>\n | 8 Dimensions <\/td>\n<\/tr>\n | ||||||
| 61<\/td>\n | 9 Construction <\/td>\n<\/tr>\n | ||||||
| 62<\/td>\n | 10 Mechanical properties 10.1 Mechanical strength 10.2 Compression test <\/td>\n<\/tr>\n | ||||||
| 63<\/td>\n | 10.3 Impact test <\/td>\n<\/tr>\n | ||||||
| 64<\/td>\n | 10.4 Bending test <\/td>\n<\/tr>\n | ||||||
| 65<\/td>\n | 11 Fire hazard 11.1 Reaction to fire 11.1.1 Spread of fire <\/td>\n<\/tr>\n | ||||||
| 69<\/td>\n | 11.1.2 Additional reaction to fire characteristics 12 External influences 12.1 Degree of protection provided by enclosure 12.1.1 General 12.1.2 Degree of protection \u2013 Ingress of foreign solid objects 12.1.3 Degree of protection \u2013 Ingress of water 12.2 Resistance against corrosion <\/td>\n<\/tr>\n | ||||||
| 71<\/td>\n | 13 Electromagnetic compatibility <\/td>\n<\/tr>\n | ||||||
| 72<\/td>\n | Annex A (normative)Determination of material thickness A.1 Material thickness of plain conduit A.2 Material thickness of corrugated conduit <\/td>\n<\/tr>\n | ||||||
| 73<\/td>\n | A.3 Material thickness of combined plain conduit and corrugated conduit A.4 Material thickness of plain conduit, with an intermediate corrugated layer <\/td>\n<\/tr>\n | ||||||
| 74<\/td>\n | Annex B (normative)Special national conditions <\/td>\n<\/tr>\n | ||||||
| 75<\/td>\n | Annex ZZ(informative)Relationship between this European standard and the safety objectives of Directive 2014\/35\/EU [2014 OJ L96] aimed to be covered <\/td>\n<\/tr>\n<\/table>\n","protected":false},"excerpt":{"rendered":" Tracked Changes. Conduit systems buried underground for the protection and management of insulated electrical cables or communication cables – General requirements<\/b><\/p>\n |