Embedded Power for
Business-Critical Continuity
NTQ123-DC Series
70 - 125 Watts
Total Power:
Input Voltage:
# of Outputs:
70-120 Watts
36 - 72 VAC
Quad
Rev. 08.15.07
NTQ123-DC Series
1 of 3
RoHS
Electrical Specifications
Special Features
• -48 VDC input
• Remote sense on outputs
one and two
• Power fail and remote inhibit
• Single wire current sharing
on outputs one and two
• Adjustable main outputs
• Built-in Class B EMI filter
• Overvoltage protection
• Overload protection
• Thermal overload protection
Input
Input range
Inrush current
Efficiency
EMI filter
36 - 72 VDC
38 A max., cold start @ 25°C
65% typical at full load
FCC Class B conducted; CISPR 22 Class B conducted;
EN55022 Class B conducted; VDE 0878 PT3 class B conducted
and radiated.
<1 mA @ 72 Vdc input
Safety ground
leakage current
Output
Maximum power
Adjustment range
Hold-up time
Overload protection
70 W for convection; 125 W with 30 CFM forced air
±5% minimum
20ms @ 120 W load, -48 Vdc input
Short circuit protection on all outputs
Case overload protected @ 110 -145% above peak rating
Overvoltage protection 3.3 V output; 5 V output: 10% to 35% above nominal output
Logic Control
Safety
VDE
UL
CSA
NEMKO
CB
CE
0805/EN60950 (IEC950)
UL1950
CSA 22.2-234 Level 3
EN 60950/EMKO-TUE
(74-sec) 203
Certificate and report
Mark (LVD)
Power failure
Remote inhibit
Remote sense
TTL logic signal goes high 100-500 msec after 5 V output; it
goes low at least 4 msec before loss of regulation
Requires an external TTL Signal to inhibit outputs
Compensates for 0.5 V lead drop minimum, will operate with-
out remote sense connected. Reverse connection protection.
EMERSON-NETWORKPOWER [ EMERSON NETWORK POWER ]
