Power / Grounding Wiring And Fuses; Power Connections - Weq CFW700 Serie Manual Del Usuario

3.2.2 Power / Grounding Wiring and Fuses

ATTENTION!
Use proper cable lugs for the power and grounding connection cables.
Refer to Table B.1 on page
recommended wiring and fuses and
terminals.
NOTE!
The gauges values presented in
and Table B.3 on page 208
maximum permitted voltage drop shall be considered for the proper wiring sizing.
Input fuses
The fuses to be used at the input must be HS (High-Speed) type with I
„
value indicated in the
page 208 (consider extinction current value in cold situation (it is not the fusion value)), to
protect the inverter diode rectifiers and input wiring.
In order to meet UL requirements, use class J fuses at the inverter supply with a current not
„
higher than the values presented in
Table B.3 on page 208.
Optionally, slow blow fuses can be used at the input. They shall be sized for 1.2 x the rated
„
input current of the inverter. In this case, the installation is protected against short-circuit, but
not the inverter input rectifier. This may result in major damage to the inverter in the event of
an internal component failure.

3.2.3 Power Connections

PE
R
S
T
Power
Disconnect
supply
switch
206, Table B.2 on page 207
Table B.5 on page 217
Table B.1 on page
are for reference only. Installation conditions and the
Table B.1 on page 206,
Table B.1 on page
PE R S T U V W PE
Fuses
Figure 3.2: Power and grounding connections
Installation and Connection
and Table B.3 on page 208
for the specifications of the power
206, Table B.2 on page 207
2
Table B.2 on page 207
206, Table B.2 on page 207
Shielding
for the
t equal or lower the
and Table B.3 on
and
PE W V U
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