VICOR MicroPAC Spécifications télécharger pdf (Page 7)

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Output Power De-rating Curve

The MicroPAC is designed to operate from a single electrical phase; as such it can be operated directly

from a normal wall outlet socket. These sockets are normally rated for 12 A continuous current draw

and 15 A peak current draw. With this in mind it is necessary to institute a power de-rating curve to

maintain the operational range of the MicroPAC within these boundaries.

MicroPAC to MicroPAC Current Sharing

The MicroPAC power supplys with the same output voltages can be placed in parallel arrays by

connecting the output positive (+) and return (-) rails to the respective positive and return rails of the

next MicroPAC. If individual MicroPAC's are conﬁgured in an array it is necessary to make sure all

MicroPAC are powered up at the same time. Pin 2 (0V +5V return) of the customer interface connector

should be daisy chained together on each MicroPAC in the array. The GSD signal Pin 8 should also

be daisy chained together and be used to turn on all outputs at the same time. The current sharing

is achieved by using the droop sharing method and produces in the order of 5 –10% Current sharing

accuracy. (Contact factory for details).

It is important to note that following good cable routing and symmetry is critical for good current

sharing and load balancing.

80 90 100 110 120 130 140 150

160 170 180 190 200 210 220 230

850

895

940

985

1030

1075

1120

1165

1210

1255

1300

Output Power (Watts)

Output Power De-rating Curve

vs. AC Input voltage

AC Input (Vrms)

Output Power (W)

Figure 2:

Output Power De-rating Curve

vs.

AC Input Voltage

1 2 3 4 5 6 7 8 9 10 11 12 ... 20 21

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VICOR MicroPAC Spécifications Page 7