6 Electrical Connection SMA America, LLC
56 SI4548_6048-US-TB_en-13 Technical description
Connection to the Relay Contact
1. Pierce a hole at a suitable location in the cable support sleeve using a sharp object.
2. Starting from the outside, lead the insulated conductors with bootlace ferrules through the hole
in the Sunny Island.
3. Cut an appropriate piece from the silicone tube (included in scope of delivery) and pull it over
the insulated conductors.
4. Connect the conductors to the supplied three-pole terminals. The pins have the following
meaning:
– NC: normally closed (when the Sunny Island is
off, the relay is closed)
– C: Contact (front contact)
– NO: normally opened (when the Sunny Island is
off, the relay is open)
5. Tighten the terminals (torque: 5 in-lbs. to 7 in-lbs. (0.56 Nm to 0.79 Nm)).
6. Insert the three-pole terminal into the corresponding pin connector on the Sunny Island.
Danger to life from electric shock due to incorrect insulation.
• Securely disconnect the relay cable from the communication area and the AC area.
• Strip the insulated conductors of the relay cable.
• Sheathe all relay cables installed using the silicone tube provided.
• Do not operate the device without the silicone tube.