
6 Electrical Connection
SMA Solar Technology AG
Installation Manual
SBxx-1SP-US-40-IA-xx-15
31
Position
Designation
N
Pin connector
BAT
is not used
O
Equipment grounding terminal for the equipment grounding conductors of
the PV array
P
Communication assembly
Q
Jack
DISPLAY
for the LED assembly connection in the enclosure lid of the
Connection Unit
6.2
AC Connection
6.2.1
Requirements for the AC Connection
Additionally required material (not included in the scope of delivery):
☐ Conduits (trade size: 21 mm (0.75 in) or smaller with suitable reducer bush)
☐ UL-listed raintight or liquidtight conduit fittings (trade size: 21 mm (0.75 in) or smaller with
suitable reducer bush)
Requirements on the AC conductors:
☐ The maximum permitted temperature of the terminal block for AC connection of 105°C
(221°F) must be observed.
☐ The conductors with regards to its ampacity, rated temperatures, operating conditions and its
power loss must be made in accordance with the local standards and the
National Electrical
Code
®
ANSI/NFPA 70 or the
Canadian Electrical Code
®
CSA C22.1.
☐ Conductor type: copper wire
☐ Maximum permissible temperature at SB3.0-1SP-US-40, SB3.8-1SP-US-40, SB5.0-1SP-US-40
and SB6.0-1SP-US-40: 75°C (+167°F)
☐ Maximum permissible temperature for SB7.0-1SP-US-40 and SB7.7-1SP-US-40: +90°C
(+194°F)
☐ The conductors must be made of solid wire, stranded wire or fine stranded wire. When using
fine stranded wire, bootlace ferrules must be used.
☐ Conductor cross-section: 4 mm² to 16 mm² (12 AWG to 6 AWG)
Load-break switch an cable protection:
☐ In PV systems with multiple inverters, protect each inverter with its own overcurrent protective
device. Observe the maximum permissible fuse protection (see Section 10 "Technical Data",
page 65). This will prevent residual voltage from being present at the corresponding
conductor after disconnection.
☐ The load-break switch or circuit breaker must be listed (see
National Electrical Code
®
ANSI/
NFPA 70) or Canadian Electrical Code
®
CSA C22.1).
☐ Loads installed between the inverter and the overcurrent protective device must be fused
separately.
☐ The overcurrent protective device for the AC output circuit is to be provided by others.
ENGLISH
Содержание SB3.0-1SP-US-40
Страница 235: ......
Страница 236: ...www SMA Solar com ...