SMA SB 2500TL-21 Installation - Manual (Page 10)

Safety SMA Solar Technology AG
10 SB25-30TLST-21-IA-en-13 Installation Manual
The enclosed documentation is an integral part of this product.
• Read and observe the documentation.
• Keep the documentation in a convenient place for future reference.
2.2 Qualification of Skilled Persons
The work described in this document must be performed by skilled persons only. Skilled persons must
have the following qualifications:
• Knowledge of how an inverter works and is operated
• Training in how to deal with the dangers and risks associated with installing and using electrical
devices and plants
• Training in the installation and commissioning of electrical devices and plants
• Knowledge of all applicable standards and directives
• Knowledge of and adherence to this document and all safety precautions
2.3 Safety Precautions
DANGER!
Danger to life due to electric shock
When exposed to sunlight, the PV array generates a dangerous DC voltage which is
present in the DC conductors or the live components in the inverter.
• Do not touch the DC conductors.
• Do not touch live components in the inverter.
• Prior to performing any work on the inverter, always disconnect it from any voltage
sources as described in this document (see Section 8.2 "Disconnecting the Inverter
from Voltage Sources" (page 57)).
DANGER!
Risk of burns due to electric arc
To prevent arcing when disconnecting cables in the PV array, the ESS and DC connectors
must be removed from the inverter, or the external DC switch-disconnector must be
switched off and the DC connectors must be removed from the inverter before performing
any work on the PV array.
• Before starting work on the PV array, always disconnect the inverter on the AC and
DC sides (see Section 8.2 "Disconnecting the Inverter from Voltage Sources"
(page 57)).
• Attach the enclosed warning label "Risk of burns from electric arc" so that it is clearly
visible on the external AC disconnection device.