SMA SUNNY TRIPOWER X 20-US - Connect Signal Source to MFR

6 Electrical Connection
SMA Solar Technology AG
Operating manualSTPxx-US-50-BE-en-1144
6.6.2 Connect signal source to MFR
Additionally required material:
☐ Conduit (trade size: 27mm (1in) or smaller with suitable reducer bush)
☐ Rain-tight conduit fittings or conduit fittings for wet locations complying with UL514B (trade
size: 27mm (1in) or smaller with suitable reducing bush)
Requirements:
☐ The technical requirements of the multifunction relay must be met (see Section14, page94).
Procedure:
1. Disconnect the inverter from all voltage sources (see Section9, page67).
2. Insert the conduit fitting into the opening and tighten from the inside using the counter nut.
3. Remove the filler plug from the enclosure opening which is located at the bottom of the
inverter.
4. Attach the conduit to the conduit fitting.
5. Guide the conductors from the conduit into the inverter.
6. Strip the insulation off the conductor 6mm (0.24in).
7. Connect the conductors to the 3-pole terminal block
according to the operating mode. Ensure that the
conductors are plugged completely into the terminal
points up to their insulation.
1
2
3
8. Insert the three-pole terminal block with the
connected conductors into slot MFR.
9. Ensure that the terminal block is securely in place.
10. Ensure that all conductors are correctly connected.
11. Ensure that the conductors sit securely in the terminal points. Tip: To release the conductors,
open the terminal points using a suitable tool.
Also see: