Connecting The Connection Unit To The Primary Unit; Replacing Power Optimisers - SolarEdge SE66.6KUS Installation Manual

Connecting the Connection Unit to the Primary Unit

1. Connect the DC, as follows, see Figure 51:
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 0.88-1.1 lb.*ft / 1.2-1.5 N*m.
5. Verify that there are no unconnected wires at the output of the Connection Unit a nd that any
unused terminal screws are tightened.
6. Connect the DC and AC wires to the Connection Unit.Refer toConnecting the AC and DC Strings to the
Connection Unit on page 37 .
7. If you replace a Connection Unit with a built-in Energy Meter, connect the RS485 connector to the
inverter communication board.
8. Ensure proper conduit sealing; inspect the entire conduit run and use standard conduit sealants to
avoid water penetration.

Replacing Power Optimisers

1. Turn OFF the inverter ON/OFF switch, and wait until the LCD green light is blinking, or wait five
minutes before continuing to the next step.
WARNING!
If a malfunction is indicated by the LEDs, wait five minutes for the input capacitors of the inverter to
discharge.
Si vous ne pouvez pas voir l'écran de l'onduleur ou si un dysfonctionnement est indiqué sur l'écran
LCD, attendez cinq minutes pour que les condensateurs d'entrée de l'onduleur soient déchargés.
2. Turn OFF the AC breaker and distribution panel on the main distribution panel.
3. Disconnect and replace the necessary power optimisers.
4. Perform pairing
-Three Phase Inverter with Synergy Technology Installation MAN-01-00402-1.4
Connect to terminal
L1
L2
L3
N
Appendix D: Replacing System Components
Figure 53: Primary Unit AC terminals
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