Page 5 - Elevator DC Installation Guide
P. 5

VOLTAGE MATCHING
Magnetek offers a wide selection of pre- engineered auto-transformers in a variety of voltage and frequency combinations.
OUTPUT FILTER
Before installing modernized motor controls, it is important to correctly match the voltage of AC mains (incoming line power) to the armature voltage of the DC elevator machine. This can be achieved by adding an input auto-transformer or isolation transformer.
OPTION
Since the  rst commercial installation of Quattro DC, Magnetek has continued to improve drive designs and re ne installation requirements.
New optional output  ltering technology improves the long-term reliability of low voltage DC motors.
THE OUTPUT FILTER
• Decreases risk of  eld and/or armature winding
failures over time
• Meets goal of a ≤ 500 V/μsec of voltage change with respect to time, in accordance the
NEMA MG 1 guidelines
• Available with a variety of armature and  eld design/installation options
INPUT AUTO-TRANSFORMER OR ISOLATION TRANSFORMER USAGE
Rated Armature Voltage Is Less Than Input AC Mains Voltage
• If rated armature voltage is more than 12% lower than AC mains voltage (0.88 x VAC Input)
Rated Armature Voltage Is Greater Than Input AC Mains Voltage
• If rated armature voltage is more than 50% higher than AC mains voltage (1.5 x VAC Input)
Pre-engineered auto-transformers available with primary and secondary voltages from 200V-600V.
For more information on modernizing with the Quattro DC elevator drive, visit www.elevatordrives.com


































































































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