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250 Watts LPS250 Series

250 Watts LPS250 Series

250 Watts LPS250 Series

Product catalog summary
Special Features: The LPS250 Series power supply offers active power factor correction, remote sense and inhibit capabilities, power fail signals, single wire current sharing, built-in EMI filter, low output ripple, supervisory outputs of 5V and 12V, overvoltage and overload protection, thermal overload protection, and DC power good indicators. It operates at a 120 kHz switching frequency and has optional fan covers.
Electrical Specifications: The power supply provides 250 Watts of total power with an input voltage range of 85-264 VAC or 120-300 VDC and a frequency range of 47-440 Hz. It has an efficiency of 75% at full load and a power factor of 0.99. The inrush current is limited to 20 A max at a cold start of 25°C. Safety ground leakage current is less than 0.5 mA at 50/60 Hz, 264 VAC input.
Output Specifications: The maximum power output is 250 W with 30 CFM forced air. The adjustment range is 2:1 wide ratio. Supervisory outputs include 5 V at 100 mA and 12 V at 500 mA. The hold-up time is 20 ms at a 250 W load with 115 VAC nominal line. Overload protection includes short circuit protection on all outputs and case overload protection at 110-145% above peak rating. Overvoltage protection is set at 5.7 to 6.7 VDC for the 5 V output and 10% to 25% above nominal output for other models.
Logic Control: Power failure is indicated by a TTL logic signal that goes high 50-150 msec after the 5 V output and low at least 4 msec before loss of regulation. Remote on/off requires an external contact to inhibit outputs. DC OK signal goes high 50-150 msec after the output and low when there is a loss of regulation. Remote sense compensates for a 0.5 V lead drop minimum and operates without being connected.
Environmental Specifications: The operating temperature range is 0° to 50°C ambient, with a derate of 2.5% per degree from 50° to 70°C. It is designed to meet IEC 801, -2, -3, -4, -5, -6, Level 3 for electromagnetic susceptibility. Humidity is 5% to 95% non-condensing. Vibration is tested at 0.7 G peak from 5 Hz to 500 Hz. Storage temperature ranges from -40° to 85°C. The temperature coefficient is ±.04% per °C. MTBF is demonstrated at over 550,000 hours at full load and 25°C ambient conditions.
Safety and Compliance: The power supply complies with VDE 0805/EN60950, UL1950, CSA 22.2-234 Level 5, NEMKO EN 60950/EMKO-TUE, BABT EN60950/BS7002, and has a CB Certificate and report. It also carries the CE Mark (LVD).
Mechanical Specifications: Dimensions are provided in inches with a tolerance of ±.02”. The weight is 2.6 lb (1.19 kg). The warranty period is 1 year.
Ordering Information: The document provides contact details for Astec in America, Europe, and Asia, along with ordering information for different models and optional fan covers.
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Catalog excerpts

250 Watts LPS250 Series-1

Total Power: 250 Watts Input Voltage: 85-264 VAC 120-300 VDC # of Outputs: Single Electrical Specs Input Input range Frequency Inrush current Efficiency EMI filter 85-264 VAC; 120-300 VDC 47-440 Hz 20 A max., cold start @ 25°C 75% typical at full load FCC Class B conducted and radiated CISPR 22 Class B conducted and radiated EN55022 Class B conducted and radiated VDE 0878 PT3 Class B conducted and radiated 0.99 typical Power factor Safety ground leakage current Special Features • • • • • • • • • • • • • • • • Output Maximum power Active power factor correction IEC EN6100-3-2 compliance Remote sense & remote inhibit Power fail Single wire current sharing Built-in EMI filter Low output ripple 2 Supervisory outputs 5 V and 12 V Overvoltage protection Overload protection Thermal overload protection DC power good Cover -C 120 kHz switching frequency Optional top with fan cover -CF Optional end fan cover -CEF Adjustment range Supervisory output Hold-up time Overload protection Overvoltage protection With cover: 250 W with 30 CFM forced air. (-C) (-CF) (CEF) 2:1 wide ratio 5 V @ 100 mA regulated; 12V @ 500 mA 20 ms @ 250 W load, 115 VAC nominal line at factory voltage setting Short circuit protection on all outputs. Case overload protected @ 110-145% above peak rating 5 V output: 5.7 to 6.7 VDC. Other models 10% to 25% above nominal output Logic Control Power failure Remote on/off Operating temperature: 0° to 50°C ambient derate each output at 2.5% per degree from 50° to 70°C Electromagnetic susceptibility: Designed to meet IEC 801, -2, -3, -4, -5, -6, Level 3 Remote sense Humidity: Operating; non-condensing 5% to 95% TTL logic signal goes high 50-150 msec after 5 V output. It goes low at least 4 msec 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 min. Will operate without remote sense connected. Reverse connection protected. Vibration: 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 Storage temperature: -40° to 85°C Temperature coefficient: ±.04% per °C MTBF demonstrated: >550,000 hours at full load and 25°C ambient conditionsation

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250 Watts LPS250 Series-2

5810 Van Allen Way Carlsbad, CA 92008 Telephone: 760-930-4600 Facsimile: 760-930-0698 Astec House, Waterfront Business Park Merry Hill, Dudley West Midlands, DY5 1LX, UK Telephone: 44 (1384) 842-211 Facsimile: 44 (1384) 843-355 Units 2111-2116, Level 21 Tower1, Metroplaza 223, Hing Fong Road Fwai Fong, New Territories Hong Kong Telephone: 852-2437-9662 Facsimile: 852-2402-4426 Ordering Information Model Number Output Voltage Minimum Load Maximum Load with 30 CFM Forced Air 1. Peak current lasting <30 seconds with a maximum 10% duty cycle. 2. At 25°C including initial tolerance, line voltage,...

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