NFS350 SERIES
Triple and quad output
• Autoranging input
• Ove rvoltage prote ction on main output
• Short circuit prote ction with auto re s tart
• Powe r fail de te ct
• VDE, UL, CSA and BABT approve d
• Floating, fully adjus table fourth output
• 12VDC fan conne ction
• Conducte d nois e to EN55022-A, FCC le ve l B
The NFS350 Series of triple and quad output 350 Watt open frame switchers is
designed for use with larger digital systems. High power density allows a very
compact system design. The advanced topology yields very well regulated outputs
that eliminate the need for inefficient dissipative regulators. The unique floating fourth
output allows a user configurable output voltage, adjustable from 4.5V to 30V, either
positive or negative, at up to 4A. These supplies are approved to UL, CSA, VDE and
BABT and their built-in line filter reduces conducted noise below FCC level B and VDE
0871 level A. NFS350 Series power supplies are suitable for a wide range of general
industrial applications, including process automation, robotics, networking, lighting
systems and telecoms. They are particularly suited for shelf power in miniature rack
systems or subracks.
[ 2 YEAR WARRANTY ]
SPECIFICATION All specifications are typical at nominal input, full load at 25°C unless otherwise stated
OUTPUT SPECIFICATIONS
ELECTROMAGNETIC COMPATIBILITY SPECIFICATIONS
Voltage adjustability
+5V output
±5.0%
±3.0%
Conducted emissions
Radiated emissions
ESD air
EN55022, level A
Auxiliaries
EN55022
EN61000-4-2, level 3
EN61000-4-2, level 4
EN61000-4-5, level 3
EN61000-4-4, level 3
EN61000-4-3, level 3
EN61000-4-6, level 3
Perf. criteria 1
Perf. criteria 1
Perf. criteria 1
Perf. criteria 1
Perf. criteria 1
Perf. criteria 1
Line regulation
LL to HL, FL
Main output
ESD contact
±0.1% max.
±1.0%
Surge
Fast transients
Radiated immunity
Conducted immunity
Total regulation
See Note 4
Overshoot/undershoot At turn-on
0%
GENERAL SPECIFICATIONS
Transient response
+5.1V
(35A to 50A step)
150mV max. dev.
500µs recovery
Hold-up time
230VAC, after power failure
230VAC, after PFD flag
20ms
5ms
Temperature coefficient All outputs
Overvoltage protection +5V output, note 7
Output power limit
±0.02% /°C
6.25V ±0.5V
550W, min.
Efficiency
230VAC, FL
70% typical
Isolation voltage
Input/output
Input/chassis
3000VAC
1500VAC
Short circuit protection Foldback
See Note 7
Continuous
Switching frequency
Variable
automatic recovery
Approvals and
standards
Safety
VDE0805, EN60950, IEC950
IEC1010, UL1950, BABT
CSA C22.2 No. 950
Remote sense
Main output
Compensate
up to 200mV
Fan output current
Note C
12V/0.75A
Weight
MTBF
1.9kg (67.07oz)
INPUT SPECIFICATIONS
Input voltage range
MIL-HDBK-217E
66,000 hours
Autoranging
90 to 132VAC
180 to 264VAC
ENVIRONMENTAL SPECIFICATIONS
Thermal performance
Operating, see curve
0°C to +70°C
Input frequency range
Input surge current
47Hz to 63Hz
40A
Non-operating
–40°C to +85°C
0°C to 50°C,
30CFM forced air
50°C to 70°C,
30CFM forced air
350W
Derate 8.75W/°C
+85°C typical
110/230VAC
Safety ground
leakage current
110VAC, 60Hz
230VAC, 50Hz
0.6mA, max.
1.6mA, max.
Thermal switch
trip temperature, Note 7
Peak power (60s)
450W
Relative humidity
Altitude
Non-condensing
5% to 95% RH
Operating
Non-operating
10,000 feet max.
40,000 feet max.
Vibration, 5Hz to 500Hz Three orthogonal axes
random vibration,
2.4G rms
PAGE 1
10 min. test for each axis