Mounting Star-Delta Contactors on Plate

Perform the following procedure to mount the star-delta contactors on the plate.

1. Drill 12 holes in the plate, with respect of the dimensions given.

   • LC1G205-475C - Maximum hole diameter: 6 mm

   • LC1G620C - Maximum hole diameter: 9 mm

   NOTE: To ease the mounting, drilling stencils JYT1902701 can be downloaded from the www.se.com website.
   Star-delta starter with three contactors of the same size:
   

   Contactor	G	J	X
   LC1G205-245C	35 mm	166 mm	92,7 mm
   LC1G300-475C	45 mm	187 mm	115 mm
   LC1G620C	70 mm	242 mm	160 mm

   Star-delta starter with LC1G300-475C line and delta contactors and LC1G205-245C star contactor.
   
   Star-delta starter with LC1G620C line and delta contactors and LC1G300-475C star contactor.
   

2. Remove the plastic part on the side of the star and delta contactors, where the mechanical interlock will be installed.

3. Discard the plastic part into the bin.

   

4. Insert the metal slides on the holes of the star and delta contactors.

   

5. Mount each contactor on the plate. Consult the relevant instructions:

   • For mounting LC1G205-245C contactors, see Mounting LC1G205-245C Contactors on Plate

   • For mounting LC1G300-620C contactors, see Mounting LC1G300-620C Contactors on Plate

   

6. Assemble the mechanical interlock LA9G970 between star and delta contactors of the same size according to the size of the contactors.

   	LC1G205–245C	LC1G300–475C	LC1G620C
   			-
   			-
   	-
   	-

   NOTE: The mechanical interlock LA9G971 and LA9G972 between star and delta contactors of different sizes do not need to be adapted.

7. Insert the mechanical interlock between the star and delta contactors on the metal slides.

8. Tighten the two screws at the right torque to lock the interlock.