SMA DU-SC-US - Manual (Page 5)

SMA America, LLC Important Safety Instructions
Unpacking DISU_SCUS-AP-eng-IUS110911 5
Other symbols in this document
In addition to the safety and hazard symbols described on the previous pages, the following symbol
is also used in this technical description:
Markings on this product
The following symbols are used as product markings with the following meanings.
Information
This symbol accompanies notes that call attention to supplementary information that you should
know and use to ensure optimal operation of the system.
Warning regarding dangerous voltage
The product works with high voltages. All work on the product must only be performed
as described in the documentation of the product.
Electric arc hazards
The product has large electrical potential differences between its conductors. Arc flashes
can occur through air when high-voltage current flows. Do not work on the product
during operation.
Beware of hot surface
The product can become hot during operation. Do not touch the product during
operation.
Observe the operating instructions
Read the documentation of the product before working on it. Follow all safety
precautions and instructions as described in the documentation.
UL1741 is the standard applied by Underwriters Laboratories to the Disconnect Unit for
Sunny Central 250U/500U/500HE-US and Sunny Central CP to certify that it meets the
requirements of the National Electrical Code
®
, the Canadian Electrical Code
®
CSA
C22.1 and IEEE‑929‑2000. IEEE 929-2000 provides recommendations regarding the
proper equipment and functionality necessary to ensure compatible operation when
power generation is connected to the utility grid.