TU425
425W Single Output
Test and Measurement/Industrial Series
www.slpower.com TU425 REV 2.8 29-MAY-15 2
General Specifications
AC Input
100-240Vac, ±10%, 47-63Hz, 1∅
120–300Vdc (external fuse required for DC input)
Turn On Time
(Main Output)
Main output: <1 sec. max @115Vac, rise time 30mS
max. 5Vsb turn-on time is 500mS max., rise time
50mS max. Output Voltage rise is monotonic.
Input Current
115Vac: 5.2A, 230Vac: 2.5A
Hold-up Time
Main Output: >20ms for 300W @ 120Vac/60 Hz,
>16ms for 383W (90% of 425W) @ 120v/60Hz.
5Vsb Output: >500mS
Inrush Current
264Vac, cold start: will not exceed 40Arms
within ½ cycle. I²T = 25A²/Sec maximum
Overtemperature
Protection
Sensing transformer temperature, 135°C (55°C
ambient temperature at full load), auto recovery.
Input Fuses
F1, F2: 6.3A, 250Vac
Overload Protection
130 to 170% of rating, Hiccup Mode, auto recovery.
Earth Leakage
Current
<750μA@264Vac, 60Hz, NC
<1.5mA@264Vac, 60Hz, SFC
Short Circuit
Protection
Main Output & 5Vsb: Cycling type, auto recovery.
Fan Output: recovery only after removal of short and
load. See note 5 on page 1.
Power Factor
>0.99 @ 115Vac, Full Load
>0.95 @ 230Vac, Full Load
Overvoltage
Protection
OVP latch, see chart for trip ranges.
5V standby output (latch), see chart for trip range.
Efficiency
See Model Selection Chart on page 1.
Switching Frequency
75kHz, typical
Output Power
425W continuous, with 200 lfm airflow
300W convection cooled – See chart for specific
voltage model ratings.
Isolation
Input-Output: 4000Vac
Input-Ground: 1800Vac
Output-Ground: 1500Vdc
Transient Response
50% load step, ∆i/∆t: <0.2A/μS. Max Voltage
Deviation = 5%. Recover to within 1% of nominal
within 500µS
Operating
Temperature
all published specifications after a warm-up period.
See Application Note for operating conditions during
start-up.
Ripple and Noise
0.5%rms, 1% pk-pk, see Model Selection Chart on
page 1.
Temperature
Derating
Derate output power linearly above 50°C to 50% at
70°C
Common Mode
Noise
rms
rms
230Vac, 50/60Hz. See App Note for test
set-up and typical graphs. For high frequency
noise, consult the factory.
Storage
Temperature
-40°C to +85°C
Output Voltage
See chart on page 1. Initial setpoint within 0.5%
of nominal. Adjustable +/-5% from nominal
(except 56V)
Altitude
Operating: up to 5000m (derating may be required
above 3000m, consult factory)
Non-operating: -500 to 40,000 ft.
Minimum Load
uired for main output or 5Vsb.
Fan Output: 0.5A min required on the main
output in order for the 12V Fan output to be
within regulation.
Relative Humidity
5% to 95%, non-condensing
Total Regulation
See Model Selection Chart on page 1.
Shock
sine, 20gpk, 10ms, 3 axes, 6 shocks
total
Non-Operating: Half-sine, 40 gpk, 10 ms, 3 axes, 6
shocks total
Vibration
Operating: 0.003g/Hz, 1.5grms overall, 3 axes, 10
min/axis
Non-Operating: 0.026g2/Hz, 5.0grms overall, 3
axes, 1 hr/axis
Safety Standards
EN/CSA/UL/IEC 60950-1, 2nd Edition
Dimensions
W: 3.3” x L: 6.2” x H: 1.62”
W: 84mm x L: 157.5mm x H: 41mm
MTBF
See Model Selection Chart on page 1.
Weight
670g
E-Cap Life
7 years, based on typical operation of 12 hours/day,
261 days/year at 40°C ambient temp.
