Vicor Westcor PFC MegaPAC Power Factor Corrected AC-DC Switchers - Manual (Page 24)

UG:105 vicorpower.com Applications Engineering: 800 927.9474 Page 24
Specifications (Cont.)
Environmental Characteristics
Storage Temperature -40°C to 85°C
Altitude
Derate 2.6% total output power for each 1,000 ft to a maximum operating
altitude of 15,000 ft. Non-operating storage maximum altitude is 40 K.
Operating Temperature**
-20°C to 40°C full power; -20°C to 60°C half power
-40°C optional with rugged chassis (-MI or -MC suffix)
Shock and Vibration Mil-STD 810 (MI rugged chassis ONLY)
Humidity 0 to 95% non-condensing
Safety Agency Approvals
cURus – UL 60950-1, CSA 60950-1
cTUVus – EN 60950-1, UL 60950-1, CSA 60950-1
CE Mark – Low Voltage Directive, 73/23/EEC amended by 93/68/EEC
Note: some MI chassis will not carry all safety approvals
Product Weights
(fully configured) MP Chassis MX Chassis
9.75 lbs (4,42 kgs) 10 lbs (4,54 kgs)
Warranty
2 years limited warranty.
See
www.vicorpower.com for complete warranty statement.
*See Vicor module specifications. A preload may be necessary for modules trimmed down below 90%
of normal output voltage.
**The maximum operating temperature is 40°C. If using a VI-200 with output voltage less than 12 V
and more than 150 Watts, the operating temperature decreases to 35°C. This also applies when using
a FinPAC with output voltage less than 24 V and more than 500 Watts
.
Output Studs
New, more robust output studs (with a 3 to 1 safety margin @ 45 in. lbs.) were installed
in ConverterPACs, the slide-in assemblies used in the MegaPAC Family. These new
outputs studs are 1/8" longer to allow for multiple lugs. They are fully compatible with
the original flanged nut ConverterPACs for use in parallel arrays.
Other advantages include:
n Inner nut (that might become loose) replaced by a brass insert
n Stronger connection to the PCB
n Improved conductivity (less voltage drop and heating)
n Both the stud and panel are less likely to break due to over torqueing
Shown below are the original and re-designed studs.
Original Redesigned