SMA Solar Technology AG
4 Electrical Connection
Installation Manual
MFR-NR-IA-en-23
17
4.4.3 Installing the Multifunction Relay in the Sunny Boy /
Windy Boy or Sunny Tripower
Procedure:
2. Release the display assembly screw and flip the display assembly up.
3. The display assembly snaps into place.
4. Insert the multifunction relay in the inverter. Lead the
left-hand key on the multifunction relay into the hole
in the plastic retainer for the display assembly.
5. Lead the ribbon cable upwards behind the display
assembly.
Displayed graphics
This section describes the installation of the multifunction relay, but only shows the
Sunny Tripower in the illustrations. The procedure for installing the multifunction relay in
Sunny Boy / Windy Boy and Sunny Tripower inverters is identical. Only the inverter
environment is different.
1.
Danger to life due to high voltages in the inverter
• Disconnect the inverter from all voltage sources and open the lower enclosure lid
(see inverter manual).