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EARTHING
Earthing Conductor C.
Konu2
Konu3

BÖLÜM 2
Konu1
Konu2
Konu3
Konu4

BÖLÜM 3
Konu1
Konu2
Konu3
Konu4
Konu5

BÖLÜM 4
Konu1
Konu2
Konu3
Konu4
Konu5
Konu6

  What should be the cross-section of the Grounding Conductor? If there is copper, aluminum or steel in the building, cross-section calculations have been made. While making these calculations, to prevent the risk of fire, the maximum temperature was taken as 395 oC for copper, 325 oC for aluminum and 500 oC for steel.

 

 

Short Circuit Current   :   A  (1600 kVA for transformer approx 38,490 A)         Transformer Power(kVA):  

Conductive Material     :                                                                      Secondary  Voltage:

Ambient Temperature   : oC                                                                                         Short Circuit Impedance%:

Short Circuit Duration :  sn (1 ile 3 sn between)                                                                 Short Circuit Current:  

Temperature of the Conductor:                

                                   oC ( Copper*  Maximum temperature 395 should be taken in the closed environment due to fire hazard.)

       ⏩      Cross-section that should be used in the facility  :183  mm2 should be.

             Grounding connection in the facility.    :Welded  ,Brazed  ,  , should be.




                                                               

                               


The connection type and k values of grounding materials at certain temperatures are given in the table below.

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Welded
 Brazed
 Bolted

Soft soldered

 Temperature Copper Aluminium Steel
*
700
254
-
91
*
600
242
-
87
*
500
228
-
82
*
*
450
220
-
79
*
*
400
211
-
76
*
*
350
201
-
73
*
*
300
190
125
69
*
*
*
250
176
116
64
*
*
*
200
159
105
58
*
*
*
*
 150
138
91
50
*
*
*
*
 100
110
73
40