Emerson 1C48241500, User Manual

Page: 7 / 14

NetSure ™ DC/DC Converter Module
User Manual, UM1C48241500 (Revision E, July 20, 2015)
Spec. No: 1C48241500 Code: UM1C48241500
Model No: C48/24-1500 Revision E, July 20, 2015
1
Introduction
Overview
The C48/24-1500 is a compact DC/DC converter module which
offers efficient power conversion. It operates from a
nominal -48Vdc source to provide n24Vdc load power.
Specifications
DC Output Ratings
• Voltage: N24 volts DC, negative ground.
Output voltage is adjustable from 24 to 28 volts DC via
the associated Controller.
• Nameplate Rating: 24 to 28 Vdc, 1500W.
• Regulation:
a. Output Voltage Tolerance: < ±0.2% when the load is
50% and the temperature is from +15 to +35°C;
< ±0.5% when the load is 50% and the temperature is
from -5 to +55°C; < ±1% when the load is 50% and
the temperature is from -20 to +55°C.
b. Temperature Regulation: < ±0.02% when the load is
50% at -48Vdc and temperature range is from -10°C
to +55°C.
c. Dynamic Response: The dynamic response time at
rated input and output voltage is ≤ 200us and
overshot ≤ 5% for load changes at 50%-25%-50% and
50%-75%-50%.
d. The output voltage is accurate at half load. At half
load, the error of output voltage is ≤ ±100mV. Static
regulation will give other voltage depending on load.
The default value at half load is 27V.
• Filtering:
a. Peak-peak voltage is ≤ 250mV at 1-100MHz and
normal output voltage.
b. Psophemetic noise voltage is ≤ 2mV between
5-100% of the maximum load (output voltage
> 24V).
c. Wideband noise is < 20mV rms between
25HZ-20kHz (test according to ETS300132).
d. Output noise according to Telcordia GR-947-CORE:
< 38 dBrnC (between 5-100% of the maximum load,
output voltage > 24V).
• Ripple Attenuation: Ripple attenuation is better than
+24dB, input to output and f < 360Hz.
DC Input Ratings
•
Voltage: Nominal -48 volts DC.
•
Nameplate Rating: -41 to -58.5 Vdc, 39.5A max.
•
Inrush Current: The peak value of the inrush current does
not exceed 2 times the maximum steady-state peak
value.
•
Input Regulation: ≤ ±0.1% when the load is 100% at -42
to -58.5 Vdc input and temperature is +25°C.
•
Temperature Coefficient: ≤ ±0.02%/°C over the specified
operating temperature range.
•
Typical Input Data: When equipped with one DC-DC
converter module.
a. See Table 1 .
b. Maximum Current: Input current is 39.5 amperes
at -41.0 volts DC input and full load.
Table 1. Typical Input Data
Input
Voltage
Percent
of Full
Load
Input
Current
(Amps)
Efficiency
(%)
Typical Heat
Dissipation
(BTU/Hr)
42 VDC
0 0.125 -- 18.02
25 9.388 95.661 58.28
50 18.803 95.416 122.84
75 28.714 94.217 235.77
100 38.888 92.835 394.06
48 VDC
0 0.122 -- 20.02
25 8.218 95.516 60.33
50 16.431 95.336 125.12
75 25.055 94.181 237.34
100 33.887 92.800 396.04
58 VDC
0 0.105 -- 20.93
25 6.811 95.286 63.55
50 13.601 95.141 130.57
75 20.713 94.049 243.05
100 27.987 92.689 402.69
Note:
The output voltage of the DC-DC converter module is initially
adjusted to 24 volts DC at 50% load and 48 volts DC input.
Environmental Ratings
•
Operation Temperature Range: -40°C to +80°C (-40°F to
+176°F), -20°C to +55°C (-4°F to +131°F) with full
performance.