SMA SI-TB-BOX-10 - Manual (Page 31)

SMA America, LLC 6 Electrical Connection
Installation Manual SI_TDBOX-IA-eng-IUS122211 31
6 Electrical Connection
6.1 Safety during Electrical Connection
Danger to life due to electric shock
High voltages that can result in electric shocks are present in the live components of the
Smartformer.
• Disconnect the Smartformer from the power supply before performing any work on the
Smartformer (see Section 10).
• Always use a contact hazard protection cover when operating the Smartformer.
• Work on the Smartformer may only be performed by a skilled worker.
• Do not touch live components of the Smartformer or other components of the Sunny Island
system.
Risk of lethal electric shock due to faulty grounding
There may be only 1 conducting connection between N and PE in the entire Sunny Island system.
Any further connections disturb the fault current detection and can lead to electric shock.
• Establish 1 connection between N and PE in the AC main distribution unit. Observe the
National Electrical Code
®
, ANSI/NFPA 70 and all local standards and regulations that may
apply.
• Make sure that there are no other connections between N and PE in the entire Sunny Island
system.
Destruction of the Smartformer due to cables coming loose
The insulated conductors can become detached from the terminals due to their heavy weight,
thereby damaging or destroying the Smartformer.
• Use cable conduits to insert the cables into the Smartformer.
• Use the cable clamps within the Smartformer to clamp the cables.