SMA AUTOMATIC SWITCH BOX M-20 - Manual (Page 57)

SMA Solar Technology AG 10 Technical Data
Installation Guide AS-BOX-M_L-IA-IEN110320 57
10.2 Automatic Switch Box L-20
General Data
Rated insulation voltage
Number of phases 3-phase
Nominal voltage range 187 V … 253 V
Nominal voltage range in case of higher input voltage
range
*
* optional
195.5 V … 260 V
Nominal frequency range 45 Hz … 55 Hz
Number of Sunny Backup to be connected 3
Permitted grid structure TN-C/TT
Width x height x depth 800 mm x 950 mm x 225 mm
Weight 70 kg
Maximum altitude above MSL 3 000 m
Protection rating of enclosure
**
** according to IEC 60529
IP 54
Protection rating of inner protective cover
**
IP 20
Protection class
***
***
according to IEC 417
II
EMC environment A/B
EC Declaration of Conformity Yes
Automatic disconnection unit
****
**** according to DIN VDE 0126-1-1
Yes, in combination with
Sunny Backup 5000
Inner subdivision
*****
***** according to IEC 60439-1
Structure 1 (no subdivision)
Maximum prospective short-circuit current of grid
connection 25 kA
Switch cabinet wiring 2.5 kV AC
230 V AC terminals on control board 1.7 kV DC
Communication ports on control board 500 V DC