Application guidelines
37FRCC.PC.023.A7.22
Single compressorsElectrical data, connections and wiring
Wiring & EMC protection The motor compressor power supply from
the CDS303 frequency converter to the VZH
compressor must be done with a braided
screened / armored cable. This cable needs to
have its screen / armor conduit connected to
earth on both ends. Avoid terminating this cable
connection with twisting ends (pigtails) because
that would result in an antenna phenomena and
decrease the eectiveness of the cable.
Control cables to the CDS303 frequency
converter must use the same installation
principles as the power supply cable.
The motor compressor cable must be installed in
a conduit separated from the control and mains
cables.
Physical installation of the frequency converter
on the mounting plate must ensure good
electrical contact between the mounting plate
and the metal chassis of the converter. Use star-
washers and galvanically conductive installation
plates to secure good electrical connections.
Refer to instructions MG34M302 for tightening
torques and screw sizes.
Note that the CDS303 must be mounted on a
plain wall to ensure a good air ow through its
heat exchanger.
From network to frequency converter From frequency converter to compressor
Type in² AWG Type in² AWG
200 - 240 V
CDS-15kW 0.04 4 VZH088-J 0.04 4
CDS-18.5 kW 0.05 2 VZH117-J 0.05 2
CDS-22 kW 0.08 1 VZH170-J 0.08 1
380 - 400 V
CDS-15 kW 0.009 10 VZH088-G 0.009 10
CDS-18.5 Kw 0.015 8 VZH117-G 0.015 8
CDS-22 kW 0.025 6 VZH170-G 0.025 6
525 - 600 V
CDS-18.5 kW (IP20) 0.015 8 VZH088-H 0.009 10
CDS-30kW (IP20) 0.04 4 VZH117-H 0.015 8
CDS-30kW (IP20) 0.04 4 VZH170H 0.025 6
Wire sizes Below table lists recommended wiring sizes for the motor compressor power supply cables. These
wiring sizes are valid for a cable length up to 65 ft.
from network
to drive
from drive to
to compressor
To Next Page
Loading...
