Sma SB 6000TL‑US Installation User Manual download pdf (Page 14)

2 Safety SMA America, LLC

14 SB6-11TL-US-IA-en-13 Installation Manual

Grounding the PV modules

This Sunny Boy is a transformerless inverter. That is why it has no galvanic isolation. Do not ground

the DC electric circuits of the PV modules connected to the Sunny Boy. Only ground the mounting

frame of the PV modules.

If you connect grounded modules to the Sunny Boy, the error message F-Riso is displayed.

The DC electric circuit is connected to the AC grid during operation.

Fuses

The Sunny Boy and the DC-Disconnect do not contain string fuses.

According to the National Electrical Code

of 2008, Section 690.35, string fuses are necessary in

order to protect the PV plant against reverse currents.

Arc-Fault Circuit Interrupter AFCI

Only the following Sunny Boy types are equipped with an automatic arc-fault circuit interrupter

(AFCI):

• SB 6000TLUS-12

• SB 7000TLUS-12

• SB 8000TLUS-12

• SB 9000TLUS-12

• SB 10000TLUS-12

• SB 11000TLUS-12

The 2011 edition of the National Electrical Code

, Section 690.11, stipulates that newly installed

PV plants attached to a building must be fitted with a means of detecting and disconnection of serial

electric arcs (AFCI) on the PV side.

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 tripped AFCI may only be reset manually.

The arc-fault circuit interrupter (AFCI) can be deactivated in the "Installer" mode via the

communication device if this function is not desired.

1 2 ... 9 10 11 12 13 14 15 16 17 18 19 ... 91 92

No comments

Sma SB 6000TL‑US Installation User Manual Page 14