SMA
Solar Technology AG
Connecting External Sources
Technical Description
SI2012_2224-TEN082311
131
13.1.1 Connecting Generator Connections in Parallel
In the case of Sunny Islands connected in parallel and which operate on the same phase, the
internal transfer relay is activated simultaneously. It is thus possible to multiply the generator current
and therefore to connect a larger generator or a higher grid current.
The maximum value of the current depends on the number of transfer relays and therefore on the
number of Sunny Islands connected in parallel. One can count on a maximal current of 25 A per
Sunny Island.
13.1.2 Generator Start Options
The Sunny Island supports the following options for starting the generator which can be set in
standby mode with the "233.07 GnStrMod" parameter:
•
Manual
•
Automatic start
•
GenMan
Manual (Manual Generator Start)
This setting is for generators that do not have an electrical remote starting option and are started
using cable winches, cranks, or similar methods.
In this case, the Sunny Island has no way of starting the generator. It merely monitors the generator
input (AC2). If, in doing this, the device detects that the generator voltage and frequency are within
the set limits (see 13.1.6 "Limits and Power Adjustment" (Page 141)), the device is synchronized and
switched on after the warm-up time.
Information
Use the same cable lengths when installing the Sunny Islands with the generator.
