SMA SB 4200TL Multi-String Installation - Manual (Page 15)

SMA Technologie AG Requirements for the Installation
Installation Guide SB4200TL-13:SE2006 Page 15
4.2 Requirements: PV-Modules
The Sunny Boy 4200TL Multi-String is designed for the connection of up to two strings
(PV modules connected in series). The two strings may be different in terms of type,
module number and orientation due to the fact that each input string is processed by
a separate MPP-tracker.
The „Sunny Design“ tool will help to dimension and check the size of your string with
respect to the inverter you intend to use. Information about the „Sunny Design“ tool
is available at www.SMA.de.
The device has four PV plug connectors (two for each string). The connecting cables
of the PV panel therefore have to be equipped with such plug connectors as well.
A connection kit for the connection of loose cable ends in a string can be purchased
as an accessory. In the following you find the SMA order numbers for the different
PV plug connectors:
• Multi-Contact 3 mm: „SWR-MC“
• Multi-Contact 4 mm: „MC-SET“
• Tyco:
„TYCO-SET“
4.3 Requirements: Grid 230 V (AC)
The relevant technical regulations as well as specific re-
quirements defined by the local public utility have to be
complied with.
The terminals of the Sunny Boy 4200TL Multi-String are
suitable for cables with a cross-section of up to 10 mm². Their outer diameter should
be between 9 mm and 17 mm. The Sunny Boy 4200TL Multi-String is connected with
three wires (L, N, PE).
Limits for DC input
max. voltage per string 750 V (DC)
max. input current per string 7,5 A (DC)
Caution: A parallel connection of the DC input is not possible!
Each connection to a Sunny Boy 4200TL
Multi-String must be equipped with a sep-
arate automatic circuit breaker 25 A type
B. No other consumers may be connected
to the cable.
max. 10 mm² 9 … 17 mm
25A
B
Photovoltaik-Stringwechselrichter
Photovoltaic string inverter