Fig. J1 – Examples of overvoltage (DB422460_EN)
Fig. J2 – Main characteristics of an overvoltage (DB422461_EN)
Fig. J4 – Example of lightning current (DB422462_EN)
Fig. J5 – Various types of lightning impact (DB422463_EN)
Fig. J7 – Common mode (DB422467_EN)
Fig. J8 – Differential mode (DB422468_EN)
Fig. J9 – 10/350 µs current wave (DB422469)
Fig. J10 – 8/20 µs current wave (DB422470)
Fig. J11 – 1.2/50 µs voltage wave (DB422471)
Fig. J12 – Lightning rod (simple rod or with triggering system) (DB422472_EN)
Fig. J13 – Taut wires (DB422473_EN)
Fig. J14 – Meshed cage (Faraday cage) (DB422474)
Fig. J15 – Direct lightning back current (DB422475_EN)
Fig. J16 – Example of protection of a large-scale electrical installation (DB422476_EN)
Fig. J17 – Principle of protection system in parallel (DB422477_EN)
Fig. J19 – Time/current characteristic of a SPD with varistor (DB422478_EN)
Fig. J20 – Logic diagram for selection of a protection system (DB422479_EN)
Fig. J21 – The 4 cases of SPD implementation Note : The Type 1 SPD is installed in the electrical switchboard connected to the earth lead of the lightning protection system. (DB422480_EN)
Fig. J22 – Fine protection architecture Note: The Type 1 and 2 SPD can be combined in a single SPD (DB422481_EN)
Fig. J26 – “Installed” Up (DB422487_EN)
Fig. J28 – 1P, 2P, 3P, 4P SPDs (DB422488)
Fig. J29 – 1P + N, 3P + N SPDs (DB422489)
Fig. J30 – Basic example of balanced Iimp current distribution in 3 phase system (DB422490_EN)
Fig. J33 – SCPD “in series” (DB422491)
Fig. J34 – SCPD “in parallel”
(DB422492)
(DB422493)
Fig. J35 – SPDs with external SCPD, non-integrated (iC60N + iPRD 40r) and integrated (iQuick PRD 40r)
(DB422494_EN)
(PB116776_EN)
Fig. J37 – Example of coordination table between SPDs and their disconnecting circuit breakers (Schneider Electric brand). Always refer to the latest tables provided by manufacturers. (DB422496_EN)
Fig. J38 – Connections of a SPD L < 50 cm (DB422497_EN)
Fig. J39 – Example of connection in plastic enclosure (DB422498_EN)
Fig. J40 – Example of connection in metallic enclosure (DB422499_EN)
Fig. J41 – Example of good and bad SPD installations
(DB422500)
(DB422501)
Fig. J42 – SPD with separate or integrated external SCPD
(DB422502)
(DB422503_EN)
Fig. J43 – The connections of protected outgoing feeders are to the right of the SPD terminals (DB422504_EN)
Fig. J44 – Example of improvement of EMC by a reduction in the loop surfaces and common impedance in an electric enclosure (DB422505_EN)
Fig. J45 – Application example: supermarket (DB422506_EN)
Fig. J46 – Telecommunications network (DB422507)
Fig. J48 – SPD choice (DB422508_EN)
Fig. J50 – SPD location (DB422509_EN)
Fig. J51 – Diagram of a SPD (DB422510)
Fig. J53 – The Schneider Electric brand iPRD SPD incorporates a gas discharge tube between neutral and earth and varistors between phase and neutral
(DB422518)
(PB116777)
Fig. J54 – iQuick PRD 3P +N SPD of the Schneider Electric brand (PB116778)
Fig. J55 – Installation of indicator light with a iQuick PRD SPD (DB422519)
Fig. J56 – Remote indication of SPD status using Smartlink (DB422520)
Fig. J57 – Comparison of SCPDs voltage wave withstand capabilities for Imax = 20 kA and Imax = 40 kA (DB422521_EN)
Fig. J58 – Comparison of time/current and energy limitations curves for a circuit breaker and a fuse having the same 8/20 µs current wave withstand capability (DB422522_EN)
Fig. J59 – Propagation of a lightning wave in a conductor (DB422523_EN)
Fig. J60 – Reflection of a lightning wave at the termination of a cable (DB422524_EN)
Fig. J61 – Maximum voltage at the extremity of the cable according to its length to a front of incident voltage =4kV/us (DB422525)
Fig. J62 – Common protection only (DB422526_EN)
Fig. J63 – Common and differential protection (DB422527_EN)
