Danfoss BOCK UL-HGX66e Operating Manual page 19

5| Electrical connection
∆
∆
∆
Star-delta start-up is only possible for ∆ (230 V) power supply.
Example:
Direct start
W2 U2 V2
U1 V1 W1
L1 L2 L3
In the factory the motor is wired for direct starting at high voltage.
The brides are to be removed for star delta starting at low voltage.
© Danfoss | Climate Solutions | 2024.04
230 V ∆ ∆
∆
∆
Star-delta start
L1
L2
W2 U2
U1 V1
L1 L2
∆
∆
∆
Direct start only
L3
V2
W2
W1
U1
L3
L1
AQ450438640296en-US0301 | 19
400 V Y
U2 V2
V1 W1
L2 L3
US