2 Safety
SMA America, LLC
10
CU600-1000US-IA-en-10
Installation Manual
2 Safety
2.1 Intended Use
The Connection Unit is a String-Combiner to which up to eight strings can be connected.
Figure 1: Example design of a PV system with Connection Unit
The Connection Unit is suitable for indoor and outdoor use.
The Connection Unit must only be used in ungrounded PV systems. Do not use grounded PV modules
with the Connection Unit. Only ground the mounting frame of the PV modules.
All DC inputs of an ungrounded PV system must be equipped with an overcurrent protection
according to the
National Electrical Code
®
NEC 690. The Connection Unit shall be installed per the
requirements contained in Section690.35 of the
National Electrical Code
®
, ANSI/NFPA 70. The
Connection Unit must only be used with the following transformerless SMA inverters:
• SB 6000TLUS-12 / 7000TLUS-12 / 8000TLUS-12 / 9000TLUS-12 / 10000TLUS-12 /
11000TLUS-12
• STP 12000TL-US-10 / 15000TL-US-10 / 20000TL-US-10 / 24000TL-US-10
For safety reasons, it is forbidden to modify the product or install components that are not explicitly
recommended for this product or distributed by SMA.
Use this product only in accordance with the enclosed documentation and with the local standards
and directives. Any other use can result in personal injury or property damage.
• Do not mount the product in areas where flammable gases may occur.
• Do not mount the product in areas where highly flammable materials are stored.
• Do not install the product in potentially explosive atmospheres.
Item
Designation
A
PV modules
B
Connection Unit
C
Sunny Tripower
D
Circuit breaker
E
Utility grid
The PowerStore Inc.
(888) 244-2979
12621 E FM 917 Suite A Alvarado, Tx 76009
