Installation of the Star-Delta Connection Kits
This section describes the installation procedure of star-delta connection kits on the power terminals of the contactors. Refer to step 9 and 10 for the installation of the star bar connection kit only.
-
Place the line-delta coupling bar beside the upstream power terminals of the line and delta contactors.
-
Place the bars to connect the line on the upstream power terminals of the line contactor.
-
Insert the screws and washers through the coupling bars and power terminals. Tighten the screws at the right torque.
-
Place the bars to connect the motor on the downstream power terminals of the line contactor.
-
Insert the screws and washers through the coupling bars and power terminals. Tighten the screws at the right torque.
-
Place the star-delta coupling bar beside the downstream power terminals of the star and delta contactors.
-
Place the bars to connect the motor on the downstream power terminals of the delta contactor.
-
Insert the screws and washers through the coupling bars and power terminals. Tighten the screws at the right torque.
-
Place the star coupling bar beside the upstream power terminals of the star contactor.
-
Insert the screws and washers through the coupling bars and power terminals. Tighten the screws at the right torque.
| Contactor |
Tool |
Torque |
Screws |
|---|---|---|---|
|
LC1G115-225 |
Allen key |
18 ± 1.8 N•m (159 ± 15.9 lb-in) |
M8 |
|
LC1G265-500 |
Inner hexagon |
35 ± 3.5 N•m (310 ± 31 lb-in) |
M10 |
|
LC1G630-800 |
Inner hexagon |
58 ± 5.8 N•m (513 ± 51.3 lb-in) |
M12 |