8: Power Supplies; Standard 110 Vac Power Supply; Vdc Power Supply Option (87-8012-12) - Symmetricom XLi User Manual

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8: Power Supplies

An optional DC power supply can be used in place of the standard AC power supply. It can also be used
in conjunction with an AC power supply for redundancy. In that scenario, the XLi uses the power supply
with the highest voltage as the primary source of power, and switches to the alternate power supply as
needed.
The XLi's internal fault detector can monitor the three output voltages from the primary and the
secondary power supplies. With the Primary Power or Secondary Power indicators in F73 enabled, a
10% decrease in any of the output voltages triggers an alarm. See
page 94.
Warning: Ensure that a disconnect device, such as a switch, with the appropriate voltage/current rating,
is provided when operating/installing the XLi.
Warning: Prior to servicing the interior of a unit with dual power supplies, remove both power cords.

Standard 110 VAC Power Supply

Input:
Input connector:
Input voltage range:
Input freq. range:
Wattage:
Power Supply Status:
Alarm Status LED:
Fan:

12 VDC Power Supply Option (87-8012-12)

Input connector:
Input voltage range:
Isolation, ground:
Isolation:
Fan:
XLi Time & Frequency System
XLi-man, Issue 8, 6/17/2008, Rev. H
Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com
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IEC 320 connector
UL: 100 – 240 VAC
Universal, 90 – 264 VAC and 110 – 370 VDC
47 Hz – 440 Hz
104 watts
The Fault Detector monitors all three output voltages and provides a visual
(panel LED) and fault status if any output voltage decreases by 10%.
Green LED on with no fault and AC power applied. Green LED off with fault or no
AC power applied.
Exhaust 3-6 CFM
Removable three-position screw terminal block
12-18 VDC, 70 watts, 12 amps
Input is fully floating. Either input polarity may be strapped to
chassis ground at the input terminal block.
Input to output: 500 VAC minimum
Exhaust 3-6CFM
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"F73 – Alarm Control / Status" on
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2
1
5
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