SMA SC 500HE-US Installation - Manual (Page 69)

SMA America, LLC 8 Electrical Connection
Installation Manual SC500HEUS-IA-US_en-14 69
Connecting procedure
2. Position the cable lug or lugs on the busbar.
3. Tighten the screw with a nut in a clockwise direction.
Connect all AC cables as illustrated above.
8.7.4 AC Connection
Connection with Terminal Blocks
The AC cables are connected to the screw terminals A, B
and C. Connect 3 cables each to the terminal blocks for
the phases A, B and C.
1. Strip the cable by about 1.2 in. (30 mm).
2. Open the screw terminals completely.
C Washer
D Cable lug
E Busbar
F Nut - size: M 12
1. /05*$&
Oxide layers on contact surfaces after transport and storing of the Disconnect Unit.
Yield loss resulting due to poor electrical conductivity.
• Before connecting the cables, clean the contact surfaces.
• Use only the non-woven abrasive delivered with the Sunny Central.
• Do not clean the surfaces with sandpaper.
• Do not damage the tin coating.
• Do not touch the contact surfaces after they have been cleaned.
Position Description
1.2 in.