EG4 FLEXBOSS21 - Ess Disconnect;Rapid Shutdown (Rsd)

31
7.9 ESS DISCONNECT/RAPID SHUTDOWN (RSD)
The inverter includes a rapid shutdown system that complies with 2017 and
2020 NEC 690.12 requirements. In case of emergency, press the rapid
shutdown button to cut off the power supply, cutting the inverter’s AC Output
along with dropping the PV Conductors voltage to <30V in 30 seconds.
External RSD
The system can also utilize an External E-Stop Switch if the local AHJ deems it necessary.
• The external switch must have normally closed contact type for emergency shutdown.
• The external switch should be connected to the RSD terminals on the inverter and mounted
on a readily accessible location outdoors (check with the local AHJ for requirements).
• Remove jumper from external RSD connection and wire the E-Stop Switch into the RSD
terminals according to the switch’s specifications.
External RSD Wiring:
NOTE:
When using supported EG4
®
batteries in closed-loop
communications with the inverter, the RSD also initiates ESS
Disconnect as required by NEC code.
Rapid Shut Down
(remove jumper to
wire external RSD)
DC Disconnect
(see disconnect
product manual for
more information)