Dc-Powered Version - Nortel Meridian 1 Option 11C Planning And Installation Manual

DC-powered version

Table 6
DC power requirements for each NTAK05 or NTDK72 DC power supply
Input Range
Noise (CMESS)
Current
AC Ripple
Each Option 11C cabinet may be powered solely from a DC source if it is
equipped with the following:
• NTAK05 or NTDK72 DC power supply
• NTAK28 Junction box.
Minimum
-44 V dc
—
—
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Note: The NTAK05 or NTDK72 has a built-in circuit breaker that will
trip if the voltage difference at its input terminals drops below -42.5 V dc
+/- 1.0 V dc.
Do not allow the voltage difference between the input terminals of the
NTAK05 or NTDK72 to exceed 57 V dc. Doing so may result in
damage to the equipment and a safety hazard to personnel.
System and site requirements Page 51 of 408
Nominal
-52 V dc
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—
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CAUTION
Option 11C Planning and Installation Guide
Maximum
-54 V dc
25 dBrnc
12 Amps
100 mv RMS