EMERSON NTS350 Service Manual
Rev. 03.14.07
NTS350 Series
1of 3
Embedded Power for
Business-Critical Continuity
NTS350 Series
350 Watts
Special Features
• Active power factor correction
• IEC EN6100-3-2 compliance
• Remote sense
• Power fail and remote inhibit
• Single wire current sharing
• Built-in EMI filter
• Low output ripple
• 5V standby
• 12V fan output
• Overvoltage protection
•Overload protection
• Thermal overload protection
• DC power good
• Built in OR-ing diode / FET
• Optional fan cover (-CF suffix)
Total Power: 200 - 350 Watts
Input Voltage: 85 - 264 VAC
120 - 300VDC
# of Outputs: Single
Electrical Specifications
Safety
Input
Input range 85 - 264 VAC (wide range)
Frequency 47-440 Hz
Inrush current 38A max., cold start @ 25°C
Efficiency 85% typical at full load
EMI filter
FCC Class B conducted and radiated; CISPR22 Class B conducted and radiated; EN55022 Class B conducted and radiated;
VDE0878PT3 Class B conducted and radiated.
Safety ground leakage
current
<0.5mA @ 50/60 Hz, 264 VAC input
Output
Maximum power 200W for convection; 350W with 30CFM forced air
Adjustment range ±5%
Standby output
5V @ 2A regulated, ±5%
Fan output
12 V @ 1A, -5 %, +7%, 0.5A for -CF version
Hold-up time
20 ms @ 350 W load, 115 VAC nominal line at factory voltage
setting
Overload protection
Short circuit protection on all outputs. Case overload protect-
ed @ 115-130% above peak rating
Overvoltage protection
20-35% above nominal output
TUV 60950
UL 60950
CSA 60950
NEMKO 60950
AUSTEL 60950
CB Certificate and report
CE Mark (LVD)
RoHS
Ordering Information
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PP//PP ((PPAARRDD))
33
NTS353 12V 0A 16.6A 29.2A 33A ±2% 120mV
NTS355 24V 0A 8.3A 14.6A 16.5A ±2% 240mV
NTS358 48V 0A 4.2A 7.3A 8.2A ±2% 480mV
NTS359 54V 0A 3.7A 6.5A 7.4A ±2% 540mV
1. Peak current lasting <30 seconds with a maximum 10% duty cycle.
2. At 25°C including initial tolerance, line voltage, load currents and output voltages adjusted to factory settings.
3. Peak-to-peak with 20 MHz bandwidth and 10 μF (tantalum capacitor) in parallel with a 0.1 μF capacitor at
rated line voltage and load ranges.
Pin Assignments
Rev. 03.14.07
NTS350 Series
2of 3
Logic Control
Power failure
TTL logic signal goes high 100-500 msec after main output.
It goes low at least 4 msec before loss of regulation
Remote on/off Requires an external contact closure to inhibit outputs
DC OK
TTL logic goes high after the output is in regulation. It goes
low when there is loss of regulation.
Remote sense
Compensates for 0.5 V lead drop min. Will operate without
remote sense connected. Reverse connection protected.
Operating temperature:
0° to 50°C ambient derate each output as 2.5% per degree
from 50° to 70°C.
Storage temperature: -40°C to +85°C
Electromagnetic
susceptibility:
designed to meetEN61000-4;
-2, -3, -4, -5, -6, -8, -11 Level 3
Humidity: Operating; non-condensing 10% to 90% RH
Vibration:
Three orthogonal axes, sweep at
1 oct/min, 5 min. dwell at four major resonances 2 G
peak 8 Hz to 500 Hz, operational
MTBF demonstrated 1M hours at full load and 25°C ambient conditions
Environmental Specifications
Embedded Power for
Business-Critical Continuity
Connector
SK1 PIN 1 Line
PIN 3 Neutral
PIN 5 Ground
SK5 PIN 1 V1 swp
PIN 2 - Remote Sense
PIN 3 + Remote Sense
PIN 4 5VSB (standby)
PIN 5 5VSB return
PIN 6 +12V
PIN 7 Common
PIN 8 Inhibit
PIN 9 DC power good (DC OK)
PIN 10 Power Fail (POK)
Adjustment Potentiometers
P1 +V1 Output adjust
PP33
+5VSB adjust
1
5
610
Mating Connectors
SK1 AC input Molex 09-50-8051 (USA)
Molex 09-91-0500 (UK)
PINS:08-52-0113
SK2,3,4 Molex BB-124-08
SK5 Control signals Molex 90142-0010
PINS: 90119-2110 or
Amp: 87977-3
PINS: 87309-8
Astec Connector Kit #70-841-022 includes all of the above
Notes:
1. Specifications subject to change without
notice.
2. All dimensions in inches (mm), tolerance is
±.02”.
3. Specifications are at factory settings
4. Mounting maximum insertion depth is 0.12”.
5. Warranty: 1 year
6. Weight: 2.5 lb. / 1.13 kg.
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