ndover, MA




Copyright © 1993, Underwriters Laboratories Inc.

Underwriters Laboratories Inc. authorizes the above-named company to
reproduce this Report provided it is reproduced in its entirety.

Underwriters Laboratories Inc. authorizes the above-named company to
reproduce that portion of this Report consisting of this Cover Page through
Page 3.


File E156996
Vol. 1
Sec. 1
Page 1
Issued: 1993-11-29

and Report
Revised: 2007-03-27


D E S C R I P T I O N

PRODUCT COVERED:


USR, CNR - Component - Power Supply, 4KW MegaPAC Series: , and Three
Phase MegaPAC Series: Mpaa-zbbcccccc-dd-v-xx. Breakdown is as follows: ,
MP may be replaced by IMP.

*

Item 0.
MegaPAC Type
z = 4 for 4KW MegaPAC
z = 5 for 3 PH MegaPAC

Item 1.
Module Configuration
p = P when populated with 1
st
Gen Vicor Modules
p = X when populated with 2
nd
Gen or a combination of 1
st
and 2
nd

Gen Vicor Modules

Item 2.
Number of Outputs


aa = any number 0 - 20

Item 3.
Number of Modules


bb = any number 0 20

Item 4.
Factory assigned Code (Non-safety related)


cccccc = any alphanumeric combination of up to 6 characters or blanks

Item 5.
Module slot identification Code (Optional, Non-safety related)


dd = any alphanumeric combination of up to 2 characters or blanks

Item 6.
MegaPAC configuration Revision (Optional)


v = any alphanumeric character or blank (note: v = G for RoHs compliant)

Item 7.
MegaPAC description (Optional)


xx = any alphanumeric combination or blanks
(note: xx = EL for extended length)
(note: xx = LL for low leakage)

*
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and Report
New: 2007-03-27


GENERAL CHARACTER AND USE:


The Converters PAC Three Phase MegaPAC is built using up to twenty
Recognized (QQGQ2) dc-dc converters, which consist of the ten maximum,
Recognized (QQGQ2) slide-in Modules. The outputs can be configured by
selecting the desired outputs voltage of the module and paralleling of
similar outputs to provide the output configurations described in the Rating
Section of this report. All units share the same front end primary circuitry
and fan cooling/over temperature protection circuitry.


The power supplies were investigated for compliance with the Standard
for Information Technology Equipment Including Electrical Business Equipment,
UL 60950-1:2003, First Edition, CAN/CSA C22.2 No. 60950-1-03, First Ed.



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ELECTRICAL RATINGS:


Input - 3 phase Series: 200-240 V ac or 208/230 V ac, 47-500 Hz, 0-20 A
max per phase or 300 V dc, 0-20 A, applied between two phases.


Output - Output voltage and power are given for each output. Each
output voltage is in range 2-95 V dc. The maximum total output power is 2000
W, with Converter PACs using VI-x6x-xx or IP-x6x-xx Series DC-DC Converters.
The maximum total output power is 4000 W with Converter PACs using
Viiisxxyzzzw Series DC-DC converters.


The 2kW output, 3 phase MegaPAC only uses VI-x6x-xx IP-x6x-xx Series
modules. The 4kW output, 3 phase MegaPAC only uses Viiisxxyzzzw series
modules. The outputs of these modules between 2-40 V only have been
evaluated as SELV.


The max output power for an individual Viiisxxyzzzw Series DC-DC
converter is 400 W. The max outpower for an individual VI-26x-xx, IP-26x-xx
or VI-B6x-xx, IP-B6x-xx Series dc-dc converter with output voltage 2-95 V dc
is 200 W. The max output power for a VI-J6x-xx or IP-J6 Series is 100 W.
The max output power for parallel converters is the sum of their individual
output power. The nominal input voltage for the VI-26x-xx, IP-26x-xx, VI-
B6x-xx, IP-B6x-xx, VI-J6x-xx and IP-J6x-xx is 300 V dc.


MODEL DIFFERENCES:


The model number may be followed by additional letters and/or numbers,
as described in the product covered paragraph which signifies the variations.


The DC MegaPAC Series is constructed identically to the Three Phase
MegaPac Series. The Markings of the DC Series directs the installer to
connect the DC potential between two of the existing phases, and to terminate
the unused phase.


ENGINEERING CONSIDERATIONS (NOT FOR UL REPRESENTATIVE USE):


Use - For use only in end-use equipment where the acceptability of the
combination is determined by Underwriters Laboratories Inc.


Special Considerations - The following items are considerations that
were used when evaluating this product.


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USR/CNR indicates investigation to the U.S. and Canadian (Bi-National)
Standard for Safety of Information Technology Equipment, Including Electrical
Business Equipment, UL 60950-1:2003, First Edition, CAN/CSA C22.2 No. 60950-
1-03, First Ed.

Conditions of Acceptability - When installed in the end-use equipment,
the following are among the considerations to be made.

1.
This component has been judged on the basis of the required
spacings in the UL 60950-1:2003, First Edition, CAN/CSA C22.2 No. 60950-1-03,
First Ed., Sub. Clause 2.10, which would cover the component itself, if
submitted for Listing.


1A.
"Models without ConverterPAC's ("0" outputs) Fig. 1, Item 4, are
provided with Blank (filler) panels. These units are NON-SELV, non-
Isolating, NON-Functional and require the ConverterPACs to provide primary
to secondary isolation."


2.
The power supply should be installed in compliance with the
enclosure, mounting, spacing (creepage and clearance), casualty, markings and
segregation requirements of the end-use application.


3.
The need for conducting leakage current tests is to be determined
as part of the end-product evaluation.


4.
This power supply has only been evaluated for use in a pollution
degree 2 environment.


5.
A Heating Test should be conducted in the end-product.
Consideration should be given to measuring the temperature on power
electronic components, inductors and transformer windings when the power
supply is installed in the end-use equipment. All transformers employ a
Class A electrical insulation system.


6.
The input and output connectors have not been evaluated for field
connections and are only intended for connection to mating connectors of
internal wiring inside the end-use machine. The acceptability of these and
the mating connectors relative to secureness, insulating materials, and
temperature shall be considered.


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7.
This power supply shall be properly bonded to earth in the end-
use product as this unit was investigated for Class I construction. The
bonding terminal has not been investigated as a protective earthing terminal.
An additional evaluation shall be made if the power supply is intended for
use in other than Class I equipment.


7a.
The need for conducting an earthing tests is to be determined as
part of the end-product evaluation.


8.
This power supply has only been evaluated for use in a 25°C
ambient. An additional evaluation should be made if the power supply is
intended to be used in an elevated ambient.


9.
Three 20 A fast-blow fuses were provided in each input phase.
These fuses were relied on for Component Abnormal testing. Consideration
should be given to repeat these tests if any other rated fuse is used.


10.
A Locked Rotor Test was performed on the fan. Consideration
should be given to the fan guard if it acts as part of the end-product
enclosure.


11.
These units may be shipped with 1 to 10 ConverterPACs. This
investigation was based on these units being installed within an overall
enclosure which is not operator accessible. If, in the end-use equipment
these power supplies are to be operator accessible, consideration should be
given to the accessibility and possible energy hazard available at any unused
modupac module connectors.


12.
The individual modules which comprise this unit have earth
leakage currents which may exceed 3.5 mA at high frequency inputs. For end-
product units which operate at input frequencies higher than 63 Hz, the end-
product must be provided with industrial type sockets or plugs, and the
cross-sectional area of the internal protective earthing conductor may not be
less than 1.02 mm, or the end-product must be additionally evaluated to
determine acceptability with respect to leakage current requirements.


13.
During testing of the MegaPAC Series, the units chassis was
connected to ground. The inputs and outputs were isolated from ground.


14.
The input of the DC MegaPac Series should be provided with an
appropriate current rated 300 V dc over-current protection device.