Toshiba TOSVERT VF-A7 Instruction Manual page 34

The new generation high-performance inverter 200v class 0.4- 90kw 400v class 0.75-280kw
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Do not connect any device or unit with a built-in capacitor (noise filter, surge
suppressor, etc.) to output terminals (on the motor side), or it could cause the risk of
a fire.
Prohibited
Prevention of radio noise
Prevent interference, such as radio noise, separately install and bind cables connected to the
power supply-side terminals (R/L1, S/L2 and T/L3) of the main circuit and those connected to the
motor-side terminals (U/T1, V/T2 and W/T3).
Power supply to the control and main circuits (for the 22kW and smaller models)
You want to keep the control circuit alive when the main circuit shuts off because of trouble or
tripping, you can use an optional power supply unit to supply power to the control circuit
separately from the main circuit.
Notes on wiring
When connecting wires to the main circuit terminals, use crimp contacts because there is no
large space between terminals, and attach them in order so that they do not come into contact
with each other.
Be sure to ground the inverter by connecting wires of the following size or larger to the
grounding terminal G/E.
Voltage
class
200V
400V
Refer to the table in 9.1 for wire sizes.
Wire sizes listed in 9.1 is for the case the wire length is below 30m. To use wires longer than
30m, you need larger cables than listed in 9.1.
Tighten a terminal stand screw with specified bolting torque.
Applicable motor
0.4 5.5kW
7.5kW
11 15kW
18.5 22kW
30 37kW
45kW
55 90kW
0.75 11kW
15kW
18.5kW
22 30kW
37 55kW
75 132kW
160 220kW
280kW
Recommended bolting torque for terminal stand
M3
M4
M5
M6
M8
M10
M12
Warning
Grounding wire size
AWG(cross-section[mm
2
12(3.5)
10(5.5)
6(14)
4(22)
2(38)
2/0(60)
4/0(100)
12(3.5)
10(5.5)
8(8)
6(14)
4(22)
2/0(60)
4/0(100)
300(150)
N m
lb ins
0.5
1.2
2.4
4.0
8.0
16
32
B-2
])
For the 200V 0.4~7.5kW
models and the 400V
0.75~7.5kW models, a
grounding screw (M5) is
provided in the wiring hole
cover, in addition to a
grounding terminal.
4.4
11
21
35
71
142
283

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