Vicor FlatPAC Family 50 to 600 Watt AC-DC Switchers A-Series - Manual (Page 6)

Fusing. The FlatPAC’s internal fuses are not user-replaceable. Please return the
unit to vendor if servicing is necessary.
Grounding. For safe operation, the FlatPAC unit must be grounded. Connect a
ground lead to the terminal marked (GND). Use the same wire gauge as that
specified for your FlatPAC unit’s input voltage connections, below.
Input Voltage Connections. Connect the line voltage to L1 (hot) and L2N
(neutral). For one-up FlatPAC models (max. output 200 W), use #16 input wire; for
two-up and three-up models (max. output 400 W and 600 W), use #14 input wire.
Recommended connector screw torque is 5 to 7 in-lbs (0.5 to 0.8 N-m). Use your
FlatPAC model only with the corresponding input voltages and frequencies shown
in the table below. Either connect or do not connect ST1 to ST2 as indicated.
Output Wire Gauge. Use the output wire gauge that corresponds to the output
current of your FlatPAC unit, below:
105 A–160 A : #4 26 A–40 A : #10 7 A–10 A : #16
66 A–104 A : #6 16 A–25 A : #12 4 A–6 A : #18
41 A–65 A : #8 11 A–15 A : #14 0 A–3 A : #20
Output Voltage Trimming. Do not trim the outputs higher than 110% of their
nominal output voltage. When an output is trimmed up, do not exceed its
maximum rated output power.
Operating Temperature. Do not allow the FlatPAC to exceed its maximum
operating temperature, which is reached when the heat sink is 85°C. (Full power
can be delivered up to this temperature.) Heat sink temperature is a function of the
output power and voltage of the supply, ambient temperature, and airflow across
the heat sink. Refer to the Vicor Applications Manual to determine the maximum
ambient temperature for your application. Always use worst-case conditions when
calculating operating temperature. Note: To ensure proper heat transfer from the
internal module(s) to the heat sink, the mounting holes through the heat sink (2, 3,
and 4 holes on one-, two-, and three-up models, respectively) must contain
torqued screws at all times during operation, whether or not the unit is mounted.
Installation and Operation Guidelines
6
90–132 Vac 180–264 Vac
C-Grade
Model 47–63 Hz
Strappable VI– ■ ■ F–C ■ ■ Connect Open
Autoranging VI– ■ ■ A–C ■ ■ Open Open
90–132 Vac 180–264 Vac
I-Grade
Model 47–440 Hz
Strappable VI– ■ ■ F–I ■ ■ Connect Open
Autoranging VI– ■ ■ A–I ■ ■ Open Open