Astraada DRV-22 inverters Appendix C
77
Pictures
Name
Descriptions
Membrane of heat
releasing holes at the side
Apply to severe environment and improve
protective effect.
Derate 10% of the machine.
C.2 Power supply
Check that the voltage degree of the inverter complies with the voltage of the
supply power voltage.
C.3 Cables
C.3.1 Power cables
Dimension the input power and motor cables according to local regulations.
Note: A separate PE conductor is required if the conductivity of the cable shield is not sufficient for the purpose.
C.3.2 Control cables
All analog control cables and the cable used for the frequency input must be shielded.
The relay cable needs the cable type with braided metallic screen.
Note: Run analog and digital signals in separate cables.
Check the insulation of the input power cable according to local regulations before connecting to the drive.
Model
Recommended cable
size (mm
2
)
Connecting cable size (mm
2
)
Terminal
screw
Tightening
torque
(Nm)
RST
UVW
PE
RST
UVW
P1, (+)
PB
(+), (-)
PE
AS22DRV20C4
1.5
1.5
1~4
1~4
1~4
1~4
M4
0.8
AS22DRV20C7
1.5
1.5
1~4
1~4
1~4
1~4
M4
0.8
AS22DRV21C5
2.5
2.5
1~4
1~4
1~4
1~4
M4
0.8
AS22DRV22C2
2.5
2.5
1~4
1~4
1~4
1~4
M4
0.8
AS22DRV40C7
1.5
1.5
1~4
1~4
1~4
1~4
M4
0.8
AS22DRV41C5
1.5
1.5
1~4
1~4
1~4
1~4
M4
0.8
AS22DRV42C2
1.5
1.5
1~4
1~4
1~4
1~4
M4
0.8
Note:
1. It is appropriate to use the recommended cable size under 40°C and rated current. The wiring distance should be no more than 100m..
2. Terminals P1, (+), PB and (-) connects the DC reactor options and parts.
C.4 Breaker and electromagnetic contactor
It is necessary to add fuse for the avoidance of overload.
It is appropriate to use a breaker (MCCB) which complies with the inverter power in the 3-phase AC power and input power and terminals. The capacity of the
inverter should be 1.5-2 times of the rated current.
Due to the inherent operating principle and construction of circuit breakers,
independent of the manufacturer, hot ionized gases may escape from the breaker
enclosure in case of a short-circuit. To ensure safe use, special attention must be
paid to the installation and placement of the breakers. Follow the manufacturer’s
instructions.
It is necessary to install the electromagnetic contactor in the input side to control the switching on and off safety of the main circuit. It can switch off the input
power supply when system faults.
Model
Fuse(A)
Breaker (A)
The rated working current
of the contactor (A)
AS22DRV20C4
16
16
10
AS22DRV20C7
16
16
16
AS22DRV21C5
25
25
25
AS22DRV22C2
40
40
32
AS22DRV40C7
10
10
10
AS22DRV41C5
10
10
10
AS22DRV42C2
16
16
10
C.5 Reactors
High current in the input power circuit may cause damage to the rectifying components. It is appropriate to use AC reactor in the input side for the avoidance of
high-voltage input of the power supply and improvement of the power factors.
If the distance between the inverter and the motor is longer than 50m, frequent overcurrent protection may occur to the inverter because of high leakage current
caused by parasitic capacitance effects from the long cables to the ground. In order to avoid the damage of the motor insulation, it is necessary to add reactor
