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C. DC/AC Disconnect
It is the disconnect switch that is used to turn-on and turn-off the power of
the PV Inverter. The switch disconnects both the DC and AC voltage to
and from the PV Inverter.
Electric shock
It is important to avoid touching the DC and AC cabling area
during the procedures even if the AC/DC switch of PV inverter
has been switched off. This is because live powers still remaining
with the cables, please beware.
D. AC Protection
I)
If an external AC breaker or fuse protector is installed, it is not
necessary to implement AC protection fuses within the wiring box. The
specification of external breakers or fuses shall meet the recommended
ratings listed in the following table.
II)
If there is no external AC breaker or fuse protector installed, it is
recommended to have AC protection fuses installed to the AC side. And
the AC fuse that can be selected from the recommended list as below
table indicates.
To ensure the rating of the fuses that are used for the each model is
correct, it is strongly recommended the installer purchase the AC fuses
that have already been tested by CPS.
The recommended list for the AC Fuses:
Table 6.2.1: AC Fuse Specification
Model
Manufacturer
Part Numbers
Fuses Rating
CPS
SCE4KTL-O/US
Littelfuse
KLC 25
25A / 600VAC
CPS
SCE5KTL-O/US
Littelfuse
KLC 30
30A / 600VAC
CPS
SCE6KTL-O/US
Littelfuse
L50S 40
40A / 500VAC
CPS
SCE7KTL-O/US
Littelfuse
L50S 50
50A / 500VAC