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System Application Guide SAG584622000
Spec. No. 584622000 (Model DCS4830) Issue AB, November 18, 2009
Page 11 of 17
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1.2 Input Ratings
1.2.1 Voltage:
24 volts DC nominal. Input voltage range is 21 to 28 volts DC.
1.2.2 Filtering: Noise reflected back to the central office battery is less than 32 dBrnC.
1.2.3 Typical Input Data - When equipped with one Converter Module.
(A) The output voltage of the DC-DC Converter Module is initially adjusted to 48 volts at 50%
load and 24 volts DC input.
Input Voltage
Percent
of Full Load
Input Current
(Amps)
Efficiency
(%)
Typical Heat
Dissipation
(BTU/Hr)
0 0.84 -- 60
25 6.99 82.1 90
50 13.21 86.5 128
75 19.71 86.6 190
21 VDC
100 26.33 86.0 264
0 0.74 -- 61
25 6.17 81.4 94
50 11.56 86.5 128
75 17.16 87.0 183
24 VDC
100 22.99 86.2 260
0 0.66 -- 63
25 5.37 80.2 102
50 9.99 85.8 136
75 14.77 86.7 188
28 VDC
100 19.68 86.3 257
(B) Maximum Current: Maximum input current is 26.33 amperes at full load (10 amperes) and
21 volts DC input.