OPERATION AND MAINTENANCE MANUAL
MAC-HS MOTORS
PAGE: 28
CODE: CTT32 EDITION: 04 RELEASE: SEPTEMBER 2020
Subject to technical changes without prior notice
3.7.3
Power-supply conditions
MAC-HS motors are designed to work with a power supply via frequency converters and they can withstand BUS DC voltages
(after rectifying the mains voltage) up to 700 VDC (500 VAC).
With regard to admissible voltage surges, MAC HS motors can withstand a B-type peak voltage on terminals, as described in the
following graph from technical specification TS 60034-25 of the IEC:
Voltage impulse
isolation class
Admissible operation voltage peak to peak
Phase / Phase
C
Phase / Ground
B
IVIC C/B
5,9 [U
N
]
3,1 [U
N
]
Table 19: Maximum allowable operating voltage at machine terminals
Furthermore, the drive switching frequency connected to a MAC HS motor must be at least as summarised in the table below:
Power
Working frequency
Switching frequency
P > 100kW
f > 40 Hz
4 kHz
f
≤
40 Hz
2 kHz
Table 20: Admissible switching frequency
Otherwise, the rated features of the motor, shown on its nameplate, must be derated. Please check with VASCAT to determine
the resulting values.
Summary of Contents for MAC-HS 100
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