28 User Manual UM0007_ASW3000-5000H-S_EN_V01_0321
6.2 System layout of units without integrated DC switch
Local standards or codes may require that PV systems are fitted
with an external DC switch on the DC side. The DC switch must
be able to safely disconnect the open-circuit voltage of the PV
array plus a safety reserve of 20%.
Install a DC switch to each PV string to isolate the DC side of the
inverter. We recommend the following electrical connection:
Risk of injury due to electric shock
• The inverter must be installed only by trained and
authorized electricians.
• All electrical installations must be done in accordance with
the National Wiring Rules standards and all locally applicable
standards and directives.
Damage to the inverter due to electrostatic discharge
•
Touching electronic components can cause damage to or
destroy the inverter through electrostatic discharge.
•
Ground yourself before touching any component.