5 Installation at Site
49 of 98
UPA / UPA S
3400.86/17-EN
Three-phase (3~) motors with two parallel power cables for DOL starting or
operation on a frequency inverter (VFD)
The six current-carrying conductors of the two parallel power cables are designated
U1-1, V1-1, W1-1 and U1-2, V1-2, W1-2; the earth conductor is marked PE.
The motors are wired in delta (∆) or star (Y) configuration, as shown on the name
plate, and are fitted with two parallel power cables.
1
2
3
L1
L2
L3
U
V
W
PE
PE
3~
U1-1
V1-1
W1-1
V1-2
W1-2
U1-2
4
5
Fig. 22:
Circuit diagram: motors with two parallel power cables for DOL starting or
operation on a frequency inverter (VFD)
1
Motor
2
Motor power cable
3
Core marking
4
Control unit
5
Line conductor
PE
Earth conductor; core marking:
green/yellow