Technical data
121
•
cable length, i.e. the longer the cable the weaker the fuse protection, as the long cable limits the
fault current
•
cable size, i.e. the smaller the cable cross-section the weaker the fuse protection, as the small cable
size limits the fault current
•
transformer size, i.e the smaller the transformer the weaker the fuse protection, as the small
transformer limits the fault current
•
transformer impedance, i.e. the higher the
z
k
the weaker the fuse protection as high impedance
limits the fault current.
The protection can be improved by installing a larger supply transformer and/or bigger cables, and in
most cases by selecting aR fuses instead of gG fuses. Selection of smaller fuses improves the
protection, but may also affect the fuse life time and lead to unnecessary operation of the fuses.
In case of any uncertainty regarding the drive protection, please contact your local ABB.
Cable types
The table below gives copper and aluminium cable types for different load currents.
Cable sizing is based on max. 9 cables laid on a cable ladder side by side, three
ladder type trays one on top of the other, ambient temperature 30 °C (86 °F), PVC
insulation, surface temperature 70 °C (158 °F) (EN 60204-1 and
IEC 60364-5-52:2001). For other conditions, size the cables according to local
safety regulations, appropriate input voltage and the load current of the drive.
Copper cables with concentric
copper shield
Aluminium cables with concentric
copper shield
Max. load
current
A
Cable type
mm
2
Max. load
current
A
Cable type
mm
2
56
3×16
69
3×35
71
3×25
83
3×50
88
3×35
107
3×70
107
3×50
130
3×95
137
3×70
151
3×120
167
3×95
174
3×150
193
3×120
199
3×185
223
3×150
235
3×240
255
3×185
214
2 × (3×70)
301
3×240
260
2 × (3×95)
274
2 × (3×70)
302
2 × (3×120)
334
2 × (3×95)
348
2 × (3×150)
386
2 × (3×120)
398
2 × (3×185)
446
2 × (3×150)
470
2 × (3×240)
510
2 × (3x185)
522
3 × (3×150)
602
2 × (3×240)
597
3 × (3×185)
579
3 × (3×120)
705
3 × (3×240)
669
3 × (3×150)
765
3 × (3×185)
903
3 × (3×240)
3BFA 01051905 C
Summary of Contents for ACS800-U7
Page 1: ...ACS800 Hardware Manual ACS800 07 Drives 45 to 560 kW ACS800 U7 Drives 50 to 600 hp ...
Page 4: ......
Page 28: ...Operation principle and hardware description 28 ...
Page 51: ...Planning the electrical installation 51 ...
Page 60: ...Planning the electrical installation 60 ...
Page 76: ...Electrical installation 76 ...
Page 84: ...Motor control and I O board RMIO 84 ...
Page 112: ...Maintenance 112 ...
Page 138: ...Dimensional drawings 138 Frame sizes R5 and R6 64778340_1 5 K ...
Page 139: ...Dimensional drawings 139 Frame sizes R7 and R8 68749930_1 7 C ...
Page 140: ...Dimensional drawings 140 IP54 and IP54R units of frame sizes R7 and R8 68749930_6 6 C ...
Page 148: ...3AFE64702165 Rev H EN 2012 09 19 Contact us www abb com drives www abb com drivespartners ...
