Manual Power Quality Filter PQFM
Electrical design and installation 49
have to be taken into account by the company responsible for the PQF cable
connection.
As an example of the cable sizing procedure, consider
and
, which show
the allowed current for different parameters noting typical cable manufacturer data.
WARNING: Consult your cable manufacturer for the applicable cable manufacturer
data.
Table 18: Allowed cable current for different cable sections noting the skin effect and typical
cable manufacturer data – Network frequency 50Hz
Copper
Aluminum
Cross
section
Nr
of
parallel
cables
Derating
due to
paralleling
Rated
current
[Arms]
Reduction
factor
Allowed
current
[Arms]
Rated
current
[Arms]
Reduction
factor
Allowed
current
[Arms]
[mm²]
[AWG]
16
6
1
1
100
0.997
100 75
0.999
75
25
4
1
1
130
0.993
125 100
0.997
100
35
2
1
1
160
0.987
158 120
0.994
119
50 1-1/0 1
1
190
0.975
185 145
0.989
142
70 2/0
1
1
230
0.955
220 180
0.98
176
95 3/0
1
1
285
0.93
265 220
0.965
210
120 4/0
1
1
325
0.904
290 250
0.95
238
150 300MCM 1
1
365
0.877
320 285
0.93
265
185 350MCM 1
1
415
0.844
350 325
0.908
295
240 500MCM 1
1
495
0.804
390 385
0.876
335
300 600MCM 1
1
550
0.768
420 425
0.843
358
16
6
2
0.8
160
0.997
159 120
0.999
120
25
4
2
0.8
208
0.993
205 160
0.997
160
35
2
2
0.8
256
0.987
250 192
0.994
190
50 1-1/0 2
0.8
304
0.975
290 232
0.989
229
70 2/0
2
0.8
368
0.955
350 288
0.98
282
95 3/0
2
0.8
456
0.93
420 352
0.965
340
120 4/0
2
0.8
520
0.904
470 400
0.95
380
150 300MCM 2
0.8
584
0.877
510 456
0.93
424
185 350MCM 2
0.8
664
0.844
560 520
0.908
472
240 500MCM 2
0.8
792
0.804
630 616
0.876
540
300 600MCM 2
0.8
880
0.768
675 680
0.843
573