12V 20A switching power supply
Description:
12V 20A switching power supply is the 230V ac to dc 12V 20A switching power supply,now it is widely used to the cctv camera,it is no PFC,but its efficiency is more than 87%,now it is vey popuar among the market,because it has the competitive price.
Features:
1, high efficiency DC12V 20A power supply;
2, 230V ac to DC12V power supply;
3, Over load, short circuit protection,over-temperature protection;
4, 240W switching power supply with high efficiency.
Parameter
|
|
Item No.
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K21-H240S12
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K21-H240S24
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K21-H240S36
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K21-H240S48
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|
Output
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Output Voltage
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+12V
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+24V
|
+36V
|
+48V
|
|
Rated Current
|
20A
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10A
|
6.7A
|
5A
|
|
Current Range
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0-20A
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0-10A
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0-6.7A
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0-5A
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|
Rated Power
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240W
|
240W
|
240W
|
240W
|
|
Ripple & Noise
|
240mVp-p
|
500mVp-p
|
720mVp-p
|
960mVp-p
|
|
Adjustable Output Range
|
±10%
|
|
Output Accuracy
|
±1%
|
|
Line Regulation
|
±0.5%
|
|
Load Regulation
|
±0.5%
|
|
Set up,Rise,Keep up time
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200ms, 200ms, 200ms
|
|
Input
|
Input Voltage Range
|
200-240V AC
|
|
Input Current
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3A@230VAC
|
|
Input Frequency
|
47-63Hz
|
|
Power Factor
|
>0.5
|
|
Efficiency @230Vac
|
>87%
|
>89%
|
>90%
|
>91%
|
|
Inrush Current
|
Cold start 20A@230V
|
|
Leakage Current
|
<0.5mA@240V
|
|
Protection
|
Over Load Protection
|
105~180% Hiccup automatic protection
|
|
Short Circuit Protection
|
---
|
|
Over Temp., protection
|
>120 degree,receovers automatically after the temp. goes down.
|
|
Environment
|
Working Temp.,Humidity
|
-20~40℃,10~90% RH，No condensation
|
|
Storage Temp.,Humidity
|
-20~85℃,10~95% RH
|
|
Temp.,Drift
|
±0.03%/℃(0~50℃)
|
|
Vibration
|
10~500Hz, 2G 10min /1cycle, PERIOD FOR 60min EACH AXES
|
|
Safety&EMC Standards
|
Safety Standards
|
GB4706.1
|
|
Withstand Voltage
|
I/P-O/P:1.8KV; I/P-FG:1.8KV；O/P-FG:0.5KV DC 1min
|
|
Insulation Resistance
|
I/P-O/P, I/P-FG, O/P-FG:500VDC / 100M Ohms
|
|
EMC Standards
|
EN55032 CLASS A
|
|
Others
|
Dimension
|
199*99*50mm(L*W*H)
|
|
Weight
|
0.5kg
|
|
Notes
|
1.All parameters 230VAC input, rated load, ambient temperature 25 ℃, measured under conditions of 70% humidity;
2. Accuracy: includes set up tolerance, line regulation, load regulation and so on;
3. Ripple Test: 30cm long strands connect the power supply and the load on the load side and 0.1u and 47u capacitor to 20MHz oscilloscope measured at the load end;
4. Line regulation: at rated load conditions, the input voltage changes from low to high measured;
5. Load regulation: the measured output load from 0 to 100% load change measured.
|
Product picture:
FAQ
Q1. Can I have a sample order for power supply?
A1: Yes, we welcome sample order to test and check quality. Mixed samples are acceptable.
Q2: Do you accept OEM/ODM for the switching power supply ?
A2: Yes. we do.
Q3:How about the quality?
A3:We have the better professional and experienced engineers team and strict QA and QC system.Repair rate under 0.1%~0.2%
Q4:What is PFC?
A4:PFC stands for Power Factor Correction. The purpose of PFC is to improve the ratio of apparent power and real power. The power factor is only 0.5~0.7 in non-PFC models. In PFC models, the power factor can reach above 0.9. The calculation formulas are as below:
Apparent Power=Input Voltage x Input Current (VA)
Real Power= Input Voltage x Input Current x Power Factor (W)
