Astraada DRV-24 frequency inverters Appendix C
121
Check the insulation of the input power cable according to local regulations before connecting to
the drive.
Recommended
cable
size(mm
2
)
Connecting cable size
(mm
2
)
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.