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250W Power Supply

250W Power Supply

250W power supply Model: NES-250 New and economical Leyu smps 12V 20A DC power supply 250W NES-250 NES-250 series is a 250W single-output enclosed type power supply. Adopting the input of 115VAC or 230VAC (select by switch), the entire series provides an output voltage line of 5V, 7.5V, 12V,...

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Product Details

250W power supply

Model: NES-250 


New and economical Leyu smps 12V 20A DC power supply 250W NES-250

NES-250 series is a 250W single-output enclosed type power supply. Adopting the input of 115VAC or 230VAC (select by switch), the entire series provides an output voltage line of 5V, 7.5V, 12V, 15V, 24V, 27V, 36V and 48V.


ln addition to the high efficiency up to 80%, with the built-in long life fan NES-250 can work under -15~+60℃ with full load. it allows the end system to easily meet the worldwide energy requirement. NES-250 has the complete protection functions , it is complied with the international safety regulations. NES-250 series serves as a high price-to-performance power supply solution for various industrial applications.


Are our products durable ?

1.We offer 2-year-warranty

2.The tech support & parts replacement are offered for free

3.Our products are also used in our own office and workshop

4.The components used are of quality insurrance

5.All the products must be tested before being shipped

6. We own CE CCC RoHS ISO9001 IP67certificates

7.Our company has been engaged in designing and manufacturing power supply for more then 10 years 


250W Single Output Switching Power Supply NES-250 series

Features:

AC input range selectable by switch

Protections: Short circuit / Overload / Over voltage

Cooling by free air convection

LED indicator for power on

100% full load burn-in test

High efficiency, long life and high reliability

2 years warranty


SPECIFICATION

OUTPUT


Model

NES-250-5

NES-250-7.5

NES-250-12

NES-250-15

NES-250-24

NES-250-27

NES-250-48

DC Voltage

5V

7.5V

12V

15V

24V

27V

48V

Rated Current

50A

33A

20A

16.7A

10.5A

9A

5A

Current Range

0~50A

0~33A

0~20A

0~16.7A

0~10.5A

0~9A

0~5A

Rated Power

250W

247.5W

240W

250.5W

252W

243W

240W

Ripple & Noise

150mVp-p

150mVp-p

150mVp-p

150mVp-p

150mVp-p

240mVp-p

240mVp-p

Voltage Adj. Range

4.5 ~5.5V

7.13 ~ 8.3V

10~ 13.5V

13.5~18V

20~26.4V

26~32V

41~56V

Voltage Tolerance

±2.0%

±1.0%

±1.0%

±1.0%

±1.0%

±1.0%

±1.0%

Line Regulation

±0.5%

±0.5%

±0.5%

±0.5%

±0.5%

±0.5%

±0.5%

Load Regulation

±1.0%

±0.5%

±0.5%

±0.5%

±0.5%

±0.5%

±0.5%

Setup, Rise Time

1000ms, 50ms/230VAC 1000ms, 50ms/115VAC at full load

Hold Up Time

20ms/230VAC 16ms/115VAC at full load



INPUT


Voltage Range

90 ~ 132VAC / 180 ~ 264VAC selected by switch 254 ~ 373VDC

Frequency Range

47 ~ 63Hz

Efficiency

78%

80%

84%

87%

87%

87.50%

87.50%

AC Current

5A/115V 2.5A/230V

Inrush Current

Cold Start 40A/230VAC

Leakage Current

<3.5mA / 240VAC



PROTECTION


Over Load

110 ~ 150% rated output power

Protection type: Hiccup mode, recovers automatically after fault condition is removed

Over Voltage

5.75~7.5V

9.4~11.5V

13.8 ~ 16.2V

18~21V

27.6 ~ 32.4V

41.4~46.8V

57.6~ 67.2V

Protection type: Hiccup mode, recovers automatically after fault condition is removed



ENVIRONMENT


Working Temp.

-20 ~ +60℃ (Refer to output load derating curve)

Working Humidity

20 ~ 90% RH non-condensing

Storage Temp., Humidity

-20 ~ +85℃, 10 ~ 95% RH

Temp. Coefficient

±0.03%/℃ (0 ~ 50℃)

Vibration

10 ~ 500Hz, 2G 10min./1cycle, period for 60min. each along X, Y, Z axes



SAFETY & EMC


Safety Standards

UL60950-1, CB(IEC60950-1),CCC GB4943 approved

Withstand Voltage

I/P-O/P:3KVAC I/P-FG:1.5KVAC O/P-FG:0.5KVAC

Isolation Resistance

I/P-O/P, I/P-FG, O/P-FG:100M Ohms / 500VDC / 25℃ / 70% RH

EMI Conduction & Radiation

Compliance to EN55022 (CISPR22) Class B,GB9254 CLASS B

Harmonic Current

Compliance to EN61000-3-2,-3,GB17625.1

EMC Immunity

Compliance to EN61000-4-2, 3, 4, 5, 6, 8,11, ENV50204, EN55024, EN61000-6-1, heavy industry level, criteria A



OTHERS


Dimension

215*115*50mm (L*W*H)

Weight

0.92Kg

Packing

20pcs/carton



NOTE


1. All parameters NOT specially mentioned are measured at 230VAC input, rated load and 25℃ of ambient temperature.

2. Ripple & noise are measured at 20MHz of bandwidth by using a 12” twisted pair-wire terminated with a 0.1uf & 47uf parallel capacitor.

3. Tolerance: includes set up tolerance, line regulation and load regulation.

4. Line regulation is measured from low line to high line at rated load.

5. Load regulation is measured from 0% to 100% rated load.

6. The power supply is considered a component which will be installed into a final equipment. The final equipment must be re-confirmed that it still meets EMC directives.

7. Length of set up time is measured at cold first start. Turning ON/OFF the power supply very quickly may lead to increase of the set up time.


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