9 Periodic Actions
SMA Solar Technology AG
Operating manual
MC-BOX-6-3-BE-en-30
24
9
Periodic Actions
9.1
Inserting Power Cables
NOTICE
Damage to the product due to sand, dust and moisture because of leaky
membranes
By piercing unnecessary or oversized holes, the membranes in the cable feed-through plate
become leaky. Sand, dust and moisture penetration can damage the product and impair its
functionality.
• Select membranes that match the cable diameter.
• Only pierce as many holes in the membranes of the cable feed-through plate as you need
for the cables.
• The hole in each membrane must be smaller than the diameter of the cable to be led
through.
• Only insert one cable in each membrane.
NOTICE
Damage to the product due to sand, dust and moisture because of leaky
membranes caused by town cables
Excessive mechanical stress can cause the cables to break off and damage the membranes in
the cable entry plate. If membranes are damaged, sand, dust and moisture can penetrate into
the product and damage it.
• Secure the cables outside the product, e.g., with a cable support rail.
Cable requirement:
☐ Conductor type: copper wire
Procedure:
1. Select a suitable membrane for inserting the individual cable.
2. Pierce the selected membrane with a pointed object.
3. Insert the cable through the membrane into the Multicluster-Box. The cable must be tightly
enclosed by the membrane after it is inserted.
4. Prepare the cables for connecting the generator, loads and PV system and for grounding the
multicluster system:
• Strip the insulation off each cable to match the tube terminal lug used.
• Fit the stripped insulated conductor with a suitable tube terminal lug.
5. Prepare the cables for connection to Sunny Island:
• Strip the insulation of each cable .