9
For power modules with AC docking at the same time as DC. Extraction: The module is extracted
from the cage and both AC and DC disconnect at the same Time. This could occur in standby or
power on mode. No damage or arcing shall occur to the DC or AC contacts which could cause
damage. Insertion: The AC and DC connect at the same time as the module is inserted into the
cage. No damage to the connector contacts shall occur. The module may power on or come up
into standby mode.
Many variations of the above are possible. Supplies need to be compatible with these different
variations depending upon the sub-system construction. In general, a failed (off by internal latch or
external control) supply may be removed, then replaced with a good power supply(must use the same
model) , however, hot swap needs to work with operational as well as failed power supplies. The newly
inserted power supply may get turned on by inserting the supply into the system or by system
management recogni
zing an inserted supply and explicitly turning it on.
7.3 LED Indicators
There shell be a single bi-color LED. The GREEN LED shall turn ON to indicate that all the power
outputs are available. The Red LED shall turn ON to indicate that the power supply has failed,
shutdown due to over current, or shutdown due to component failure.The LED(s) shall be visible
on the power supply’s exterior face. The LED location shall meet ESD requirements. LED shall be
securely mounted in such a way that incidental pressure on the LED shall not cause it to become
displaced.
8. Reliability
8.1 Mean Time Between Failures (MTBF)
The MTBF of the power supply shall be calculated utilizing the Part-Stress Analysis method of
MIL217F or Bell core RPP. The calculated MTBF of the power supply shall be greater than 100,000
hours under the following conditions:
Full rated load
120V AC input
Ground Benign
25
°C
Technical information in this specification is subject to change without notice.
The revision of specification will be marked on the
cover.
(2 pages)
(10 pages)
Manymanuals.com
Manymanuals.de
Manymanuals.fr
Manymanuals.it
Manymanuals.pl
Manymanuals.cz
Manymanuals.es
Manymanuals-pt.com
Comments to this Manuals