Vicor 4kW MegaPAC AC-DC Switchers User Manual

3 phase megapac, 4kw megapac, Ac-dc switcher

UG:107

vicorpower.com

Applications Engineering: 800 927.9474

Page 1

3 Phase MegaPAC

4kW MegaPAC

AC-DC Switcher

USER GUIDE | UG:107

August 2013

Overview

The 3 Phase MegaPAC and 4kW MegaPAC are field-configurable, single or multiple
output switchers providing up to 2,000 W (3 Phase MegaPAC) to 4,000 W (4kW
MegaPAC) of output power. The chassis has 10 slots and can provide up to 40 regulated,
fully isolated outputs. It achieves power densities of 4.4 Watts per cubic inch (3 Phase
MegaPAC) to 7.8 Watts (4kW MegaPAC) per cubic inch. The dimensions of the 3 Phase
MegaPAC are 4.9"H x 7.5"W x 12.3"L (124,5 mm x 190,5 mm x 312,4 mm) and the
dimensions of the 4kW MegaPAC are 4.9"H x 7.5"W x 14"L (124,5 mm x 190,5 mm x
355,6 mm). The 4kW MegaPAC is longer than the 3 Phase MegaPAC to
accommodate a 2nd fan.
A complete power supply is configured at the factory by selecting and inserting up
to ten same length slide-in output assemblies called ConverterPACs. ConverterPACs
incorporate one or two VI-200/VI-J00 and/or Maxi Vicor DC to DC converters and are
available in a wide selection of outputs and power levels. The net result is a power
supply that offers the advantages of a custom supply, but is assembled from standard
and modular building blocks. For detailed information about ConverterPACS, refer to
the ConverterPAC information sheet. The 4kW MegaPAC uses VI-200/VI-J00 and Maxi
Vicor DC to DC converters while the 3 Phase MegaPAC uses VI-200/VI-J00 Vicor
DC to DC converters.
Manufactured at Westcor, a division of Vicor, the entire family of MegaPAC power
supplies is completely user-configurable. If output requirements change, i.e., more
power or a different output voltage is needed, upgrading is easy: simply unlock a single
screw and replace the slide-in ConverterPAC with one of the same length and has the
desired voltage power rating. For additional flexibility, same length ConverterPACs
can be connected in parallel to increase output power (booster ConverterPACs), or in
series for higher voltages (total output voltage should not exceed 400V). The driver is
to the left of the boosters when looking at the output end of the supply. A user-friendly
interface provides control and output sequencing capability, in addition to useful status
indicators. Please consult our Applications Engineering Department if you have other
special requirements.