Atlas Copco DZS 065V - Page 49

Instruction Book
6996 0223 70 49
Maximum allowed current in function of the ambient temperature for installation method C.
Cable section
mm
2
Ambient temperature
30°C
40°C
45°C
50°C
55°C
4
< 32 A
< 28 A
< 25 A
< 23 A
< 20 A
6
< 41 A
< 36 A
< 32 A
< 29 A
< 25 A
10
< 57 A
< 50 A
< 45 A
< 40 A
< 35 A
16
< 76 A
< 66 A
< 60 A
< 54 A
< 46 A
25
< 96 A
< 84 A
< 76 A
< 68 A
< 59 A
35
< 119 A
< 104 A
< 94 A
< 84 A
< 73 A
50
< 144 A
< 125 A
< 114 A
< 102 A
< 88 A
70
< 184 A
< 160 A
< 145 A
< 131 A
< 112 A
95
< 223 A
< 194 A
< 176 A
< 158 A
< 136 A
120
< 259 A
< 225 A
< 205 A
< 184 A
< 158 A
Installation method F according table B.52.1.
Single-core cables, touching in free air Clearance to
wall not less than one cable diameter.
Maximum allowed current in function of the ambient temperature for installation method F
Cable section
mm
2
Ambient temperature
30°C
40°C
45°C
50°C
55°C
25
< 110 A
< 96 A
< 87 A
< 78 A
< 67 A
35
< 137 A
< 119 A
< 108 A
< 97 A
< 84 A
50
< 167 A
< 145 A
< 132 A
< 119 A
< 102 A
70
< 216 A
< 188 A
< 171 A
< 153 A
< 132 A
95
< 264 A
< 230 A
< 209 A
< 187 A
< 161 A
120
< 308 A
< 268 A
< 243 A
< 219 A
< 188 A
Calculation method for IEC:
 Single supply cables (3 phases + PE - configuration (1)):
 Add 10 % to the total pump current (ItotPack or ItotFF from the tables)
 Install the prescribed fuse on each cable
 Parallel supply cable (2 x 3 phases + PE - configuration (2)):
 Add 10 % to the total pump current (ItotPack or ItotFF from the tables) and divide by 2
 Multiply the ampacity of the cables with 0.8 (see table A.52.17 (52-E1))
 Install fuses of half the size of the recommended maximum fuse size on each cable.
 When using 2 x 3 phases + PE as in (3):
 Add 10 % to the total pump current (ItotPack or ItotFF from the tables) and divide by √3
 Multiply the ampacity of the cables with 0.8 (see table A.52.17 (52-E1))