Connecting The Inverter To The Utility Grid - SMA SUNNY BOY 3.0-US Installation Manual

6 Electrical Connection
Compatible grid configurations:
The connection procedure will vary, depending on the grid configuration; the country data set may
have to be set. The following table provides an overview of the compatible grid configurations,
which conductors have to be connected to the inverter to comply with the grid configuration and, if
applicable, which country data set of the inverter has to be set. As standard, the inverter is meant
for connection to a utility grid with a 208 V wye connection or a 240 V split-phase system, and the
country data set UL1741/2016/120 is factory-set.
Compatible grid configura-
tion
240 V split-phase system
208 V wye connection
208 V delta connection
240 V delta connection
6.2.2

Connecting the Inverter to the Utility Grid

Requirements:
☐ All electrical installations must be carried out in accordance with the local standards and the
National Electrical Code
☐ The connection requirements of the grid operator must be met.
☐ The grid voltage must be within the permissible range. The exact operating range of the
inverter is specified in the operating parameters.
Procedure:
1. Disconnect the AC circuit breaker and secure it against reconnection.
2. Ensure that the DC load-break switch of the inverter
is in the O position.
3. If the enclosure lid of the Connection Unit is mounted, remove it as follows:
• Unscrew all six screws (TX 25) and carefully remove the enclosure lid towards the front.
While doing so, note that the assembly on the enclosure lid of the Connection Unit and
the communication assembly in the Connection Unit are connected via a ribbon cable.
During the first installation, the ribbon cable is to be connected only to the LED assembly
on the enclosure lid of the Connection Unit.
32 SBxx-1SP-US-40-IA-xx-15
Conductors to be con-
nected
L1, L2 and N
L1, L2 and N
L1 and L2
L1 and L2
®
ANSI/NFPA 70 or the Canadian Electrical Code
SMA Solar Technology AG
Country data set to be set
UL1741/2016/120
UL1741/2016/120
UL1741/2016/208
UL1741/2016/240
®
CSA C22.1.
Installation Manual