E6581090
I-6
9
9.1.5 Compliance with Low voltage directive
Please carry out the below mentioned countermeasures for the Low Voltage Directive in case of
using VF-NC1 as components of your products.
(1) Inverter should be installed in a panel. Pay attention to wiring openings, so that it should
prevent someone from touching live parts through the opening in case of maintenance.
(2) No more than 1 cable should be connected to one earth terminal of the main terminal board. In
this case, other cables for ground should be grounded on the metal back plate and/or in the
cubicle. The cross-sectional area of grounding cable shall be, in any case, not less than;
Table 3. Grounding cable
Wire size
Voltage class
Capacity of applicable
motor(kW)
Inverter model
Grounding cable
0.1
VFNC1S-1001P
AWG 12 / 3.5 mm
2
0.2
VFNC1S-1002P
AWG 12 / 3.5 mm
2
0.4
VFNC1S-1004P
AWG 12 / 3.5 mm
2
Single-phase
100V
class
0.75
VFNC1S-1007P
AWG 12 / 3.5 mm
2
0.2
VFNC1S-2002P(L)
AWG 12 / 3.5 mm
2
0.4
VFNC1S-2004P(L)
AWG 12 / 3.5 mm
2
0.75
VFNC1S-2007P(L)
AWG 12 / 3.5 mm
2
1.5
VFNC1S-2015P(L)
AWG 12 / 3.5 mm
2
Single-phase
200V
class
2.2
VFNC1S-2022P(L)
AWG 10 / 5.5 mm
2
0.1
VFNC1-2001P
AWG 12 / 3.5 mm
2
0.2
VFNC1-2002P
AWG 12 / 3.5 mm
2
0.4
VFNC1-2004P
AWG 12 / 3.5 mm
2
0.75
VFNC1-2007P
AWG 12 / 3.5 mm
2
1.5
VFNC1-2015P
AWG 12 / 3.5 mm
2
Three-phase
200V
class
2.2
VFNC1-2022P
AWG 12 / 3.5 mm
2
(3) MCCB or fuse should be connected to the input side of the EMI filter.
9.2
Compliance with UL Standard and CSA Standard
The VF-NC1 models, that conform to the UL Standard and CSA Standard have the UL/CSA mark
on the nameplate.
9.2.1 Compliance with Installation
The VF-NC1 inverter must be installed in a panel, and used within the ambient temperature
specification.
They can be used at ambient temperature of up to 50 degrees by peeling off the label on the top of
the inverter.
9.2.2 Compliance with Connection
Use the UL conformed cables (Rating 75
℃
or more) with the ring terminal at wiring to the inverter
input/ output terminals (R/L1, S/L2, T/L3, U/T1, V/T2, W/T3).
9.2.3 Compliance with Peripheral devices
Use the UL listed fuses at connecting to power supply.
Refer to the instruction manual about selecting the rating of them.
Short circuit test is performed under the condition of the power supply short-circuit currents in
below.
These currents and fuse currents depend on the applicable motor capacities.
