INSTRUCTIONS AND MAINTENANCE MANUAL
MAC R MOTORS
PAGE:
26
CODE: CTT12 EDITION: 01 DATE: MAY 2013
Subject to technical changes without prior notice
3.7.3
Power-supply conditions
MAC R motors are designed to work with a power supply via frequency converters and they can withstand BUS
DC voltages (after rectifying the mains voltage) of up to 700 VDC (500 VAC).
With regard to admissible voltage surges, MAC R motors can withstand an A-type peak voltage on terminals, as
described in the following graph from technical specification TS 60034-25 of the IEC:
Figure 5: Admissible voltage surges
Limiting surge voltage curves measured between two phase terminals of the motor according to the peak rise time.
Curve A = Without filters for motors up to 500 VAC.
Furthermore, the drive switching frequency connected to a MAC R motor must be at least 4 kHz:
Otherwise, the rated features of the motor, shown on its specifications plate, must be derated. Please check with
VASCAT to determine the resulting values.
