Installing A New Connection Unit; Connecting The Connection Unit To The Primary Unit - SolarEdge SE50K Installation Manual

3. Open the Connection Unit cover:
Release the s ix Allen screws of the cover.
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Tilt the top of the cover towards you.
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Slide the cover down and remove it.
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CAUTION!
When removing the cover, make sure not to damage internal components. SolarEdge will not be held
responsible for any components damaged as a result of incautious cover removal.
4. Disconnect the Secondary Unit(s) from the Connection Unit .
5. Disconnect the communication connector from the Primary Unit communication board.
6. Unscrew the two conduit nuts in the Primary Unit securing the Connection Unit t o it, see Figure 43.
7. Open the Connection Unit cover and disconnect the DC, AC and communication wires.
8. Release the Connection Unit bracket from the wall.
9. Carefully remove the Connection Unit with its mounting bracket f rom the wall.

Installing a New Connection Unit

1. Position the new Connection Unit below the inverter and from the inside of the Primary Unit grab
the AC and DC wires extending from the switch conduits.
2. Securely screw the two conduit nuts onto the conduit ends in the inverter.
3. Attach the Connection Unit with its bracket to the wall and tighten its screw.

Connecting the Connection Unit to the Primary Unit

1. Connect the DC, as follows, see Figure 42:
Connect the red wire to any of the DC+ terminals in the inverter.
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Connect the black wire to any of the DC- terminals in the inverter.
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2. Connect the communication wire to the communication board.
3. Connect the AC wires according to the labels on the AC terminal blocks, as follows:
Three Phase Inverter
Wire type
Line 1
Line 2
Line 3
PE (grounding)
Neutral
4. Tighten the screws of each terminal with a torque of 1.2-1.5 N*m / 0.88-1.1 lb.*ft.
5. Verify that there are no unconnected wires at the output of the Connection Unit a nd that any
unused terminal screws are tightened.
Extended Power Commercial Inverter Installation Guide MAN-01-00402-1.0
Connect to terminal
L1
L2
L3
N
Appendix E: Replacing System Components
Figure 44: Primary Unit AC terminals
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