SMA Solar Technology AG GRID-CONNECT-BOX 12, Operating Manual, Page: 33 / 40

SMA Solar Technology AG 12 Technical Data
Operating Manual GRID-BOX-12-3-20-BE-en-11 33
Auxiliary electric circuits
General data
Fuse 10x38 cylinder fuse
Maximum permitted fuse rating F333 to F336: 1 A
Terminals for connecting the control cables Spring-cage terminal
Minimum conductor cross-section 0.75 mm²
Maximum conductor cross-section 2.5 mm²
Number of line conductors 3
Permitted grid configuration TN-S, TN-C-S or TT
AC voltage range between L1 and N 172.5 V to 265 V
AC voltage range between L1 and L2 300 V to 433 V
Rated frequency 50 Hz
Frequency range 45 Hz to 65 Hz
Rated impulse withstand voltage 4 kV (2000 m)
Width x height x depth (with base) 600 mm x 1400 mm x 435 mm
(incl. 200 mm base)
Weight 103 kg
Maximum operating altitude above mean sea level 3000 m
Inner subdivision Form 1 (no subdivision)
Exterior structure Closed type
Installation only fixed interior installation permitted
Construction type fixed components
Suitable for use by electrically qualified persons or unqualified
persons
Installation of the system and replacement of
equipment by electrically qualified persons only /
actuation of test buttons and read-off of information
by unqualified persons permitted
Measures for protection against electric shock Basic protection through insulation materials and
covers / fault protection through grounding
conductors and short-circuit protection devices /
personal protection through residual-current devices
Degree of protection of enclosure* IP55
Degree of protection with open enclosure door* IP20
Pollution degree at the mounting location** 3
Pollution degree in the enclosure (micro-environment) 2
Protection class*** 1
Overvoltage category**** Overvoltage category 3