SMA SSM8-21-BS - Manual (Page 52)

12 Technical Data SMA Solar Technology AG
52 SSMxx-21-IA-BS-JP-en-20 Installation Manual
Electrical Data
PV array
Negatively grounded/positively grounded/isolated
Maximum DC input voltage 1,000 V
DC
Maximum DC output current for SSM8-21-BS/SSM8-21-BS-JP 200 A
DC
Maximum DC output current for SSM16-21-BS/
SSM16-21-BS-JP
280 A
DC
Maximum reverse current 15 kA
DC
Fuse characteristics gPV
Nominal current strength of string fuses 6 A
DC
/8 A
DC
/10 A
DC
/12 A
DC
/15 A
DC
/20 A
DC
/
25 A
DC
/30 A
DC
Dimensions of string fuses 10 x 38 mm
Maximum current per fuse at maximum current of 25 A
DC
per
measuring channel, maximum output current of 200 A
DC
/
280 A
DC
and ambient temperature of 40°C
0.60 x I
nom fuse
Maximum current per fuse at maximum current of 25 A
DC
per
measuring channel, maximum output current of 200 A
DC
/
280 A
DC
and ambient temperature of 50°C
0.55 x I
nom fuse
Maximum current per measuring input 25 A
DC
Number of string inputs per potential SSM8-21-BS/
SSM8-21-BS-JP
16
Number of string inputs per potential SSM16-21-BS/
SSM16-21-BS-JP
32
Number of string fuses per potential SSM8-21-BS/
SSM8-21-BS-JP
16
Number of string fuses per potential SSM16-21-BS/
SSM16-21-BS-JP
32
Number of measuring inputs per potential SSM8-21-BS/
SSM8-21-BS-JP
8
Number of measuring inputs per potential SSM16-21-BS/
SSM16-21-BS-JP
16
External DC supply voltage*
* via the data cable for RS 485 communication
35 V
DC
to 55 V
DC
DC load-break switch 280 A
DC
Surge arrester for DC input Type 2
Surge arrester for RS485 communication SSM8-21-BS-JP/
SSM16-21-BS-JP
Type 2
Overvoltage category II
DC Main Connection to Busbar
Connection to busbar
Ring terminal lugs for M12 screw
Maximum conductor cross-section 300 mm
2
Cable gland M40