Led Signals - SMA SUNNY BOY 3.8-US User Manual

3 Product Description
Secure power supply operation
You can connect an external outlet and a switch to the inverter in order to activate the outlet. In
case of a grid failure, the outlet supplies a load with current from the PV system. When the outlet is
activated via the switch, the load is supplied with current from the PV system. The inverter
automatically regulates the energy supply of the outlet depending on the solar irradiation on the PV
system. When the outlet is activated and a load is supplied with current from the PV system, the
inverter is disconnected from the utility grid and does not feed into the utility grid.
Do not connect loads that require a stable electricity supply to the outlet for secure
power supply operation
Secure power supply operation must not be used for loads that require a stable electricity
supply. The power available during secure power supply operation depends on the solar
irradiation on the PV system. Therefore, power output can fluctuate considerably depending
on the weather or may not be available at all.
• Do not connect loads to the outlet for secure power supply operation if they are
dependent on a stable electricity supply for reliable operation.
Multifunction relay
The inverter is equipped with a multifunction relay as standard. The multifunction relay is a
multifunctional interface that can be configured for the operating mode used by a particular system.
Arc-Fault Circuit Interrupter (AFCI)
In accordance with the National Electrical Code
fault detection and interruption.
An electric arc with a power of 300 W or greater must be interrupted by the AFCI in the time
specified by UL 1699B. A detected electric arc causes the inverter to interrupt feed-in operation: In
order to restart feed-in operation, the feed-in operation must be activated manually. If the
installation conditions allow it, you can deactivate the arc-fault circuit interrupter.
3.3

LED Signals

The LEDs indicate the operating state of the inverter.
16 SB30-77-1SP-US-40-BA-en-11
SMA Solar Technology America LLC
®
, Article 690.11, the inverter has a system for arc
User Manual