Cable cross section/ HRC fuse sizes

 

Connection cable cross section and HRC fuse sizes

Power 
kvar

Nom. current
A

Cable cross section
NYY-J mm²

 HRC fuses 
in Ampere
5 7 4x2,5 16
7,5 10 4x4 20
10 14 4x4 25
12,5 18 4x6 35
15 22 4x6 35
17,5 25 4x10 50
20 29 4x10 50
25 36 4x16 63
30 43 4x16 80
37,5 54 4x25 100
50 72 3x35/16 125
55 – 65 79 – 94 3x35/16 160
70 – 85 101 - 123 3x70/35 200
86 – 100 124 - 145 3x95/50 250
101 – 125 146 - 181 3x120/70 250
126 – 160 182 - 231 2” 3x70/35 315
161 – 180 233 - 260 2” 3x95/50 400
181 – 200 261 - 289 2” 3x120/70 400
201 – 250 290 - 361 2” 3x150/70 500
251 – 300 362 - 434 2” 3x185/95 630
Connection diameters are only valid for the given capacitor power levels

 

 

 

PFC systems with a power level of more than 300 kvar have 2 separate bus bar systems and require 2 separate feeders. The table applies to conventional or de-tuned PFC systems. The actual valid regulations (e.g. DIN VDE 0298) must always be observed.

Important note: the bus bar separation must be allocated before extending any existing systems!