GEFRAN-SIEI ARTDrive Vector V2 400Vac Series, Instruction Manual

Page: 23 / 387

ARTDrive V2 series - Instruction Manual Chapter 2 Inspection Procedure,... • 23
2.3.3 AC Input Current
N
OTE
!
The Input current of the Drive depends on the operating state and the service
conditions of the connected motor, and the use of input reactors. The table
2.3.2.1 shows the values corresponding to rated continuous service (IEC 146
class 1), taking into account typical output power factor for each size.
2.3.4 AC Output
The output of the AVy Drive is ground fault and phase to phase output short
protected. The switching frequency is constant in the speed range and depends
on the drive size.
N
OTE
! The connection of an external voltage to the output terminals of the Drive is not
permitted! It is possible to disconnect the motor from the Drive output, after the
Drive has been disabled.
The value for the continuous output current rating ( I
CONT
) depends on AC Input
voltage ( K
V
), Ambient temperature ( K
T
) and Switching frequency ( K
F
):
I
CONT
= I
2N
x K
V
x K
T
x K
F
(Values of derating factor are the listed on
table 2.3.2.1)
with an overload capacity I
MAX
= 1.36 x I
CONT
for 60 seconds
The applicable deratings are automatically set when selecting the appropriate
values of AC Input voltage, Ambient temperature and Switching frequency.
Recommended motor outputs
The coordination of the motor rated power with the Drive type, presented in the
table below, refers to the use of standard 4 poles motors with a rated voltage
equal to the rated voltage of the input supply. As for those motors with different
voltages, the type of Drive to use is determined by the rated current of the
motor.
Motor nominal current cannot be lower than 1/3 rated output current [0.3 x I
2N
].
Magnetizing motor current must not be higher of I
CONT
.
N
OTE
! For service conditions with overload higher than 150%, the nominal current
must be derated.
Table 2.3.3.1 shows nominal current values for typical service profiles (Ambient
temperature =40°C [104°F], standard switching frequency). For cycles with
nominal current applied after the overload, the minimum duration is also specified.
For cycles shorter than the minimum duration specified, the current following
the overload should be reduced to a level lower than the nominal, so that the
RMS average over the cycle does not exceed the continuous current, I
CONT
.
Similar criteria apply for operation with additional derating factors.