Sunny Boy Installation Manual
Table Of Contents
- Installation Manual
- Legal Provisions
- Table of Contents
- 1 Information on this Document
- 2 Safety
- 3 Scope of Delivery
- 4 Product Overview
- 5 Mounting
- 6 Electrical Connection
- 7 Commissioning
- 8 Disconnecting the Inverter from Voltage Sources
- 9 Decommissioning the Inverter
- 10 Technical Data
- 11 Compliance Information
- 12 Contact
6 Electrical Connection
SMA Solar Technology AG
Installation ManualSBxx-1SP-US-41-IA-xx-1040
Reporting the switching status of the grid relay
The multifunction relay can trip a signal to the grid operator as soon as the inverter connects to the
utility grid. To enable this function, the multifunction relays of all inverters must be connected in
parallel.
1 kΩ
B F
1
2
3
B F
1
2
3
B F
1
2
3
=
Signal to
grid operator
Inverter 1:
Grid relay closed
Inverter 2:
Grid relay open
Inverter n:
Grid relay open
max. 30 V
DC
Figure 11 : Wiring diagram for signaling the switching status of the grid relay (example)
6.4.4 Connection to the Multifunction Relay
Additionally required material (not included in the scope of delivery):
☐ Conduits: 21mm (0.75in) or smaller with a proper reducing bush
☐ Rain-tight conduit fittings for wet locations complying with UL 514B: 21mm (0.75in) or
smaller with a proper reducing bush
ENGLISH