User:LMischler/Img-2016-G

Fig. G1 – Flow-chart for the selection of cable size and protective device rating for a given circuit (DB422280_EN)

Fig. G2 – Calculation of maximum load current IB (DB422281_EN)

Fig. G3 – Circuit protection by circuit breaker (DB422282_EN)

Fig. G4 – Circuit protection by fuses (DB422283_EN)

Fig. G5 – I2t characteristic of an insulated conductor at two different ambient temperatures (DB422284)

Fig. G6 – Current levels for determining circuir breaker or fuse characteristics (DB422285_EN)

Fig. G7 – Location of protective devices (DB422286a)

Fig. G7 – Location of protective devices (DB422286b_EN)

Fig. G7 – Location of protective devices (DB422286c_EN)

Fig. G10 – Examples of methods of installation (part of table A.52.3 of IEC 60364-5-52)

• 

  [DB422287]

• 

  [DB422288]

• 

  [DB422289]

• 

  [DB422290]

• 

  [DB422291]

• 

  [DB422292]

• 

  [DB422293]

• 

  [DB422294]

• 

  [DB422295]

• 

  [DB422296]

Fig. G17 – Reduction factors for groups of more than one circuit of single-core cables to be applied to reference rating for one circuit of single-core cables in free air - Method of installation F. (table B.52.21 of IEC 60364-5-52)

• 

  [DB422297]

• 

  [DB422298]

• 

  [DB422299]

• 

  [DB422300]

• 

  [DB422301]

• 

  [DB422302]

Fig. G18 – Reduction factors for more than one circuit, single-core or multi-core cables laid directly in the ground. Installation method D. (table B.52.18 of IEC 60364-5-52)

• 

  [DB422303a]

• 

  [DB422303b]

Fig. G20 – Current-carrying capacities in amperes for different methods of installation, PVC insulation, three loaded conductors, copper or aluminium, conductor temperature: 70 °C, ambient temperature: 30 °C in air, 20 °C in ground (table B.52.4 of IEC 60364-5-52)

• 

  [DB422304]

• 

  [DB422305]

• 

  [DB422306]

• 

  [DB422307]

• 

  [DB422308]

• 

  [DB422309]

• 

  [DB422310]

Fig. G23b – Maximum admissible currents (p.u.) in a busbar trunking system as functions of the 3rd harmonic level (DB422311_EN)

Fig. G26 – Maximum voltage drop (DB422312_EN)

Fig. G29 – Example 1 (DB422313_EN)

Fig. G30 – Example 2 (DB422314_EN)

Fig. G32 – Case of several transformers in parallel (DB422315)

Fig. G33 – Impedance diagram (DB422316)

Fig. G36 – Recapitulation table of impedances for different parts of a power-supply system (DB422317)

Fig. G37 – Example of maximum short-circuit calculations for a LV installation supplied at 400 V (nominal) from a 1000 kVA MV/LV transformer (DB422318)

Fig. G38 – Determination of downstream short-circuit current level Isc using Figure G39 (DB422319_EN)

Fig. G40 – Circuit protected by aM fuses (DB422320_EN)

Fig. G41 – Circuit protected by circuit breaker without thermal overload relay (DB422321_EN)

Fig. G42a – Circuit breaker D provides protection against short-circuit faults as far as and including the load (DB422322_EN)

Fig. G43 – Protection by circuit breaker (DB422323)

Fig. G44 – Protection by aM-type fuses (DB422324)

Fig. G45 – Protection by gG-type fuses (DB422325)

Fig. G46 – Definition of L for a 3-phase 3-wire circuit (DB422326_EN)

Fig. G53b – Example of energy limitation of a MCB for different ratings (DB422327_EN)

Fig. G54 – A poor connection in a series arrangement will leave all downstream appliances unprotected (DB422328_EN)

Fig. G55 – Direct connection of the PEN conductor to the earth terminal of an appliance (DB422329)

Fig. G56 – The TN-C-S scheme (DB422330)

Fig. G60 – PE conductor to the main earth bar in the MGDB (DB422331_EN)

Fig. G62 – Supplementary equipotential conductors (DB422332_EN)

Fig. G63a – Triplen harmonics are in phase and cumulate in the Neutral (DB422346)

Fig. G63b – Load factor of the neutral conductor vs the percentage of 3rd harmonic (DB422347_EN)

Fig. - – Compact NSX100 circuit breaker (PB116760_EN)

Fig. - – (DB422333)

Fig. - – (DB422334)

Fig. - – (DB422335)

Fig. - – (DB422336)

Fig. G64 – The various situations in which the neutral conductor may appear

• 

  [DB422337]

• 

  [DB422338]

• 

  [DB422339]

• 

  [DB422340]

• 

  [DB422341]

• 

  [DB422342]

• 

  [DB422343]

• 

  [DB422344]

• 

  [DB422345]

Fig. G65 – Example of single-line diagram (DB422367_EN)