LPS253-CEF Emerson Network Power, LPS253-CEF Datasheet - Page 2

• Manufacturer Part Number: LPS253-CEF
• Description: PWR SUPP 250W 6-12VOUT CVR/EFAN
• Manufacturer: Emerson Network Power
• Series: LPS250r

Specifications of LPS253-CEF

• Voltage - Output: 12V
• Number Of Outputs: 1
• Power (watts): 250W
• Applications: Commercial
• Power Supply Type: Switching (Closed Frame)
• Voltage - Input: 85 ~ 264VAC
• Mounting Type: Chassis Mount
• 1st Output: 12 VDC @ 21A
• Size / Dimension: 10.32" L x 5" W x 2" H (262mm x 127mm x 50.8mm)
• Power (watts) - Rated: 250W
• Operating Temperature: 0°C ~ 50°C
• Efficiency: 75%
• Approvals: CB, CE, CSA, NEMKO, UL, VDE
• Line Regulation: ±2%
• Load Regulation: ±2%
• Power Supply Output Type: Fixed
• No. Of Output Channels: 1
• Input Frequency: 440Hz
• Output Voltage: 12V
• Output Current: 21A
• Power Rating: 250W
• Input Voltage: 85VAC To
• No. Of Outputs: 1
• Rohs Compliant: Yes
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• 3rd Output: -
• 2nd Output: -
• 4th Output: -
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant
• Other names: 454-1208; LPS253-CEF

Logic Control
Environmental Specifications
Power failure:
Remote on/off:
DC - OK:
Remote sense:
Operating temperature:
Storage temperature:
Temperature coefficient: ± 0.4% per °C
Electromagnetic
susceptibility:
Humidity:
Vibration:
MTBF demonstrated:
Ordering Information
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 in parallel with a 0.1 µF capacitor at rated line voltage and load ranges.
4. If optional CF or CEF fans are not used, 30CFM forced air cooling needs to be provided and is required through the length of the power supply.
5. O utput voltage adjustment requires a minimum load.
6. Remote inhibit resets OVP latch
Note: -CF suffix added to the model number indicates cover with top fan. -CEF suffix added to the model number indicates cover with dual end
mounted fan cover and AC inlet.
Model Number
Not convection rated.
LPS252-C
LPS253-C
LPS254-C
LPS255-C
Output Voltage Minimum Load
24 V (24 -48 V)
12 V (6 - 12) V
15 (12 - 24 V)
5 V (3 - 6 V)
0° to 50 °C ambient;
derate each output at 2.5% per degree from 50° to 70 °C
-40 °C to +85 °C
Designed to meet IEC 801, -2, -3, -4, -5, -6, Level 3
Operating; non-condensing 5% to 95%
Three orthogonal axes, sweep at 1 oct/min, 5 min. dwell at four major resonances 0.7 G
peak 5 Hz to 500 Hz, operational
> 550,000 hours at full load and 25 °C ambient conditions
TTL Logic signal goes high 50-150 msec after 5 V output. It goes low at least 4 ms before loss of
regulation
Requires an external contact (N.O or N.C) to inhibit outputs
TTL logic goes high 50-150 msec after the output. It goes low when there is loss of
regulation.
Compensates for 0.5 V lead drop minimum, will operate without remote sense connected. Reverse
connection protected
1.50 A
0.63 A
0.50 A
0.32 A
Maximum Load with
30CFM Forced Air
16.7 A
10.4 A
50 A
21 A
Peak Load 1 Regulation 2 Ripple P/P (PARD) 3
12.5 A
60 A
25 A
20 A
±2%
±2%
±2%
±2%
Embedded Power for
Business-Critical Continuity
120 mV
150 mV
240 mV
50 mV
Rev. 2.16.09_158
LPS250 Series
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