Operator`s manual

Pg. 2 Vicor 800-735-6200 Westcor Division 408-522-5280 Applications Engineering 978-749-3524 or -3525 Rev. 1/99
3 Phase MegaPAC Owner’s Manual
3 Phase MegaPAC™
AC-DC Switcher
3 Phase MegaPAC “Quick Install” Instructions
Mounting the 3 Phase MegaPAC
* The 3 Phases MegaPAC can be mounted on any of four sides.
* Use #8-32 or M4 mounting screws. Maximum penetration should not exceed 0.15" (3,8mm).
* A minimum of 2" (5,1cm) clearance must be maintained at either end of the supply in order to insure
proper airflow and cooling.
Output Connections
Power Connections
Installing ring lugs and/or bus bars on output studs:
* The upper stud is Positive and the lower stud is the Return.
* Remove outer nut. Do not remove or loosen inner nut.
* Place ring lug over output stud.
* Replace and tighten outer nut to a maximum torque of 45 lb-in.
Do Not Over-Tighten Nuts.
* Verify all output nuts are properly installed before turning on supply.
Installing power connectors on DualPACs and DualQPACs (J1A and J1B):
* Use Molex mating receptacle #39-01-2060 with #39-00-0039 terminals
provided.
* Pins 1 and 4 are Positive, while pins 2 and 5 are the Return.
* Attach terminals to 18-24 AWG stranded wire using Molex tool #11-01-0197.
Sense Connections
Sense connections must always be made. Failure to connect Sense lines can
cause failure to the unit.
Sense Connector J2:
* Sense connections do not have to be made if the Local Sense option has been
ordered. (An “L” in the ConverterPAC part number means the Local Sense
option has been installed; e.g. M5V/40AL.)
* Use Molex mating receptacle #50-57-9403 with #16-02-0103 terminals pro-
vided.
* J2-2 is the +Sense and J2-3 is the -Sense.
* Attach terminals to 22-24 AWG twisted pair wire using Molex tool #11-01-
0208.
* Attach opposite ends of Sense lines to point where regulation is desired.
* Verify that Sense lines are not cross-connected before applying input
power.
Sense Connections on QPACs:
* Sense connections do not have to be made if the Local Sense option has been
ordered. (An “L” after the current rating means the Local Sense option has
been installed; e.g., L5V/40AL.)
* Use Molex mating receptacle #39-01-0073 and #39-00-0031 terminals provid-
ed.
* J2-7 is the +Sense and J2-6 is the -Sense.
* Attach terminals to 22-28 AWG twisted pair wire using Molex tool
#57005-5000.
* Attach opposite end of Sense lines to point where regulation is desired.
* Verify that Sense lines are not cross-connected before applying input
power.
J1A & J1B
1
2
3
4
5
6
1&4 +Vout
2&5 -Vout
3 +Sense
6 -Sense
Pin
J1A & J1B
1
2
3
4
5
6
1&4 +Vout
2&5 -Vout
3 +Sense
6 -Sense
Pin
Sense Connector for Non-QPACs
DualPAC and DualQPAC Output Connector
DualPAC and DualQPAC Output Connector