GD350A series high-performance multifunction VFD
-363-
VFD model
Breaker rated
current (A)
Quick fuse (A)
Contactor rated
current (A)
GD350A-132G/160P-4
400/500
400/500
330/400
GD350A-160G/185P-4
500/500
500/600
400/400
GD350A-185G/200P-4
500/630
600/600
400/500
GD350A-200G/220P-4
630/630
600/700
500/500
GD350A-220G/250P-4
630/700
700/800
500/630
GD350A-250G/280P-4
700/800
800/1000
630/630
GD350A-280G/315P-4
800/1000
1000/1000
630/800
GD350A-315G/355P-4
1000/1000
1000/1000
800/800
GD350A-355G/400P-4
1000/1000
1000/1200
800/1000
GD350A-400G/450P-4
1000/1250
1200/1200
1000/1000
GD350A-450G/500P-4
1250/1250
1200/1400
1000/1000
GD350-500G-4
1250
1400
1000
Note:
The accessory specifications described in the preceding table are ideal values. You can select
accessories based on the actual market conditions, but try not to use those with lower values.
D.6 Reactors
When the voltage of the grid is high, the transient large current that flows into the input power circuit
may damage rectifier components. You need to configure an AC reactor on the input side, which can
also improve the current adjustment coefficient on the input side.
When the distance between the VFD and motor is longer than 50 m, the parasitic capacitance between
the long cable and ground may cause large leakage current, and overcurrent protection of the VFD
may be frequently triggered. To prevent this from happening and avoid damage to the motor insulator,
compensation must be made by adding an output reactor. When a VFD is used to drive multiple motors,
take the total length of the motor cables (that is, sum of the lengths of the motor cables) into account.
When the total length is longer than 50 m, an output reactor must be added on the output side of the
VFD. If the distance between the VFD and motor is 50 m to 100 m, select the reactor according to the
following table. If the distance is longer than 100 m, contact INVT's technical support technicians.
DC reactors can be directly connected to the VFD models of 132G/160P or higher and the 660 V
series. DC reactors can improve the power factor, avoid damage to bridge rectifiers caused due to
large input current of the VFD when large-capacity transformers are connected, and also avoid
damage to the rectification circuit caused due to harmonics generated by grid voltage transients or
phase-control loads.
