KSB UPA Installation & Operating Manual page 49

5 Installation at Site
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.
L2 L3
L1
U V W PE
U1-1
V1-1
W1-1
3~
Fig. 22: Circuit diagram: motors with two parallel power cables for DOL starting or
operation on a frequency inverter (VFD)
1 Motor
3 Core marking
5 Line conductor
UPA / UPA S
5
4
PE
U1-2
V1-2 3
W1-2
2
1
2 Motor power cable
4 Control unit
PE Earth conductor; core marking:
green/yellow
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