Lightning protection guide by OBO

| Kategorie: Katalog  |

Last revision 2020

Vydal: OBO BETTERMANN s. r. o. Autor: OBO BETTERMANN

Strana 132 z 288

Jak získat tento dokument?






Poznámky redaktora
However, the transition the insulated conductor in the critical area the building edge and connection of the insulated conductor the air-termination sys- tem require special additional measures avoid float- ing discharges.2. The same problems must solved for the insulated conductor. The field medium and high-voltage technology has shown that floating discharges can occur the ends of cables. Structure Lightning channel Insulated air-termination device Insulator Conventional conductor L Separation distance U Induced voltage Structure Virtual solid insulation material Structure Virtual solid insulation material replaced with insulated con- ductor Critical area Development insulated, high-voltage-resistant conductor TBS Blitzschutz-Leitfaden 2018 / en / 2020/01/10 14:42:40 14:42:40 (LLExport_02613) / 2020/01/10 14:42:54 14:42:54 132 Chapter The external lightning protection system . these applications, avoid floating dis- charges, the cable given cable termination for po- tential control. An insulated conductor, shown the image below, can developed, if, instead the air around the bare conductors being used the insulating material, it assumed that the bare conductor surrounded by virtual solid insulating material.2.3 Isolated external lightning protection sys- tem with insulated, high-voltage-resistant conduct- ors A high-voltage-resistant, insulated conductor should withstand the induced voltage the event light- ning strike and resist the environmental loads, such as ultraviolet radiation and soiling, the tension and pres- sure forces resulting from snow, ice and wind, well as the electrodynamic forces. Due the in- creased resistance solid insulating material com- pared air, the insulation thickness around the con- ductor can reduced few millimetres.13. The requirements for special potential control for insulated conductors lightning protection are de- rived from this. first glance, this allows routing the insulated cable dir- ectly the shell the structure. However, there the differ- ence that there never alternating current insu- lated conductor and only few voltage and current loads will occur during the entire lifespan struc- ture