Toshiba TOSVERT VF-AS3 Instruction Manual page 30

Grounding terminal torque
Type-Form
VFAS3-4004PCE
VFAS3-4007PCE
VFAS3-4015PCE
VFAS3-4022PCE
VFAS3-4037PCE

VFAS3-4055PCE
VFAS3-4075PCE
VFAS3-4110PCE
VFAS3-4150PCE
VFAS3-4185PCE
VFAS3-4220PCE
VFAS3-4300PCE
VFAS3-4370PCE
VFAS3-4450PCE
VFAS3-4550PCE
VFAS3-4750PCE
Note) 1(N m)=8.850(lb
•
2. 3. 4
Prohibited
Mandatory
action
This inverter has a built-in EMC noise filter and the inverter input power supply is grounded via the
capacitor. By disconnecting this grounding capacitor, the leakage current through the inverter can be
reduced. When your power supply system is IT system or grounded in the point other than the neutral,
disconnect the grounding capacitor. when the grounding capacitor is disconnected, the inverter unit no
longer comply with EMC directive.
It is switched by changing the position of the exclusive switching screw(s) that varies depending on the
type. For the details of the switching method, refer to [2.3.4] of E6582062.
2. Installation and wiring
Frame size
A1E
A2E
A3E
A4E
A5E
in)
•
Switching of grounding capacitor
• When using this 480V class inverter with a power supply system that is grounded in other than
the neutral point (e.g. when the power supply has delta connection with single phase ground-
ing), the grounding capacitor should not be grounded.
Otherwise, it will result in failure or fire.
• When using this inverter with a power supply of IT system (power supply isolated from ground
or grounded through high impedance), disconnect the grounding capacitor.
Otherwise, it will result in failure or fire.
• Make sure to turn the power off before switching the grounding capacitor.
If not, it will result in electric shock.
Torque
Screw size
(N • m)
M5 2.6
M6 4.4
M8 10
M8 11.8
M12 18
WARNING
2-16
E6582162c
Strip length
(lb • in) (mm)
23 -
38.9 -
88.5 28
104 -
159 35