Selection Of The Power Cable Protection/Filter Input Protection Scheme; Ce Version Protection Scheme - ABB PQFM Instruction Manual

Table 19: Allowed cable current for different cable sections noting the skin effect and typical
Cross section
[mm²] [AWG]
16 6
25 4
35 2
50 1-1/0
70 2/0
95 3/0
120 4/0
150 300MC
M
185 350MC
M
240 500MC
M
300 600MC
M
16 6
25 4
35 2
50 1-1/0
70 2/0
95 3/0
120 4/0
150 300MC
M
185 350MC
M
240 500MC
M
300 600MC
M
6.7 Selection of the power cable protection/filter input protection
scheme
The filter and its feeding cable must be protected by an appropriate mechanism.
6.7.1

CE version protection scheme

Standard CE versions of active filter do not have an incorporated power circuit
protection. This one can optionally be obtained. Alternatively, the customer can install
50 Electrical design and installation ç Manual Power Quality Filter PQFM
cable manufacturer data – Network frequency 60Hz
Nr of Derating
parallel due to
cables paralleling
1 1
1 1
1 1
1 1
1 1
1 1
1 1
1 1
1 1
1 1
1 1
2 0.8
2 0.8
2 0.8
2 0.8
2 0.8
2 0.8
2 0.8
2 0.8
2 0.8
2 0.8
2 0.8
Copper
Rated Reduction Allowed
current factor current
[Arms] [Arms]
0.996
100
0.99
130
0.981
160
0.965
190
0.941
230
0.911
285
0.88
325
365
0.85
415
0.817
495
0.775
550
0.738
0.996
160
0.99
208
0.981
256
0.965
304
0.941
368
0.911
456
0.88
520
584
0.85
664
0.817
792
0.775
880
0.738
Aluminum
Rated Reduction
current factor
[Arms]
1
99 75
1
128 100
0.99
157 120
0.98
183 145
0.97
216 180
0.95
260 220
0.93
286 250
310 285
0.91
339 325
0.89
383 385
0.85
406 425
0.81
1
159 120
1
205 160
0.99
250 192
0.98
293 232
0.97
346 288
0.95
415 352
0.93
457 400
496 456
0.91
542 520
0.89
613 616
0.85
649 680
0.81
Allowed
current
[Arms]
75
100
119
143
175
210
233
260
288
326
346
120
160
190
228
280
336
374
416
460
522
553