xppower.com
250/350 Watts
EMH Series
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Single & Dual Output Models
IT & Medical (BF) Approvals
80 V ꢀ 275 VAC Operation
Optional ORing Diode (EMH350D Models)
Analog & PMBus Signals Options (EMH350)
5 V Standby (EMH350)
3 Year Warranty
Specification
Input
General
Efficiency
Isolation
• 87% typical
Input Voltage
• 80-275 VAC, derate output power
<90 VAC (see derating curve)
• 47-63 Hz
• 2.6 / 3.6 A at 115 VAC typical (250 / 350 W)
1.3 / 1.8 A at 230 VAC typical (250 / 350 W)
• 40 A max at 230 VAC, cold start 25 °C
• >0.9
• 4000 VAC input to output 2 x MOPP,
1500 VAC input to ground 1 x MOPP,
1500 VAC output to ground 1 x MOPP
• 62-560 /71 /50-130 KHz,
PFC /Main /Standby Converter
Input Frequency
Input Current
Switching Frequency
Power Density
3
Inrush Current
Power Factor
• 11.6/ 16.3/ 9.5 W/in (250 / 350 / 350 W Dual)
Signals (Option EMH350)• Power fail, Inhibit, 5 V Standby,
2
Current Share, fan speed control and I C
PMBus Options
• 400 kHrs to MIL-HDBK-217F at 25 °C, GB
Earth Leakage Current • 250 µA max, 264 VAC, 60 Hz
Patient Leakage Current • 100 µA max
MTBF
Input Protection
• 10 AF / 250 V internal fuse in line
and neutral
Environmental
Operating Temperature • 0 °C to +70 °C, derate linearly from +50 °C
at 2.5% / °C to 50% load at +70 °C
Output
Cooling
• Forced cooled 12 CFM (350 W Dual: 16 CFM)
or integral fan. See thermal considerations
longform datasheet
Output Voltage
• 12-48 VDC (see tables)
Output Voltage Trim
Initial Set Accuracy
Minimum Load
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10% V1
1% V1, 5% V2
Operating Humidity
• 95% RH, non-condensing
Storage Temperature • -40 °C to +85 °C
• No minimum load required
• 1 s typical
• 50 ms
Operating Altitude
Shock
• 3048 m
Start Up Delay
•
3 x 30g shocks in each plane, total 18
shocks. 30g = 11 ms ( 0.5 ms), half sine,
conforms to EN60068-2-27 & EN60068-2-47
• Single axis 10 - 500 Hz at 2g sweep and
endurance at resonance in all 3 planes.
Conforms to EN60068-2-6
Start Up Rise Time
Hold Up Time
• 16 ms typical
Vibration
Line Regulation
Load Regulation
Cross Regulation
Transient Response
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0.5% maximum
1% V1, 5% standby
• Dual output only (see regulation curves)
EMC & Safety
Emissions
• 4% max. deviation, recovery to
within 1% in 500 µs for a 50-75-50%
load change
• EN55011/22 level B conducted
EN55011/22 level A radiated
(See EMC report)
• EN61000-3-2, class A
• EN61000-3-3
• EN61000-4-3, level 3 Perf Criteria A
• EN61000-4-4, level 3 Perf Criteria A
Ripple & Noise
• 1% pk-pk, 20 MHz bandwidth
Harmonic Currents
Voltage Flicker
Radiated Immunity
EFT/Burst
Overvoltage Protection • 115-140% V1 nom, recycle input to reset
Overtemperature
Protection
• Auto reset
Surge
• EN61000-4-5, installation class 3,
Overload Protection
• 110-150%, power limit
Perf Criteria A
Short Circuit Protection • Continuous, approximately constant
Conducted Immunity
Dips & Interruptions
• EN61000-4-6, level 3, Perf Criteria A
current
• 0.05% /°C
• EN61000-4-11, 30% 10 ms,
Temperature
Coefficient
60% 100 ms, 100% 5000 ms,
Perf Criteria A, B, B,
EN60601-1-2, 30% 500 ms, 60% 100 ms,
100% 10 ms, 100% 5000 ms, Perf Criteria A,
A, A, B - 230 VAC. Consult longform
datasheet for 115 V operation.
Remote Sense
• Compensates for up to 0.5 V drop
Safety Approvals
• EN60601-1, ANSI/AAMI ES60601-1,
CSA22.2 No.60601-1 per cUL BF Rated,
Including Risk Management, EN60950,
UL60950
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