Tianjin Estel Electronic Science and Technology Co.,Ltd
| Payment Terms | L/C, T/T, D/A, D/P, Western Union |
| Supply Ability | 20,000 sets per month |
| Delivery Time | 7-10 working days |
| Packaging Details | carton/wooden case |
| Input Voltage | -48VDC |
| Output Voltage | +28VDC |
| Output Power | 400W |
| Output efficiency | natural cooling |
| Output Efficiency | 87% |
| Temperature Coefficient | ±0.03 % / °C |
| Product Name | Industrial Power Supplies |
| Brand Name | ESTEL |
| Model Number | GPDD401M28-1A |
| Certification | ISO9001, CE, 3C, FCC, TLC |
| Place of Origin | Shenzhen, China (Mainland) |
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Product Specification
| Payment Terms | L/C, T/T, D/A, D/P, Western Union | Supply Ability | 20,000 sets per month |
| Delivery Time | 7-10 working days | Packaging Details | carton/wooden case |
| Input Voltage | -48VDC | Output Voltage | +28VDC |
| Output Power | 400W | Output efficiency | natural cooling |
| Output Efficiency | 87% | Temperature Coefficient | ±0.03 % / °C |
| Product Name | Industrial Power Supplies | Brand Name | ESTEL |
| Model Number | GPDD401M28-1A | Certification | ISO9001, CE, 3C, FCC, TLC |
| Place of Origin | Shenzhen, China (Mainland) | ||
| High Light | industrial power supply ，enclosed power supply | ||
48V DC Input Voltage Industrial Power Supplies 400W Output Power GPDD401M28-1A
Quick Details:
| Place of Origin: Shenzhen, China (Mainland) | Input Voltage: -48VDC |
| Brand Name: ESTEL | Output Voltage: +28VDC |
| Model Number: GPDD401M28-1A | Output Power: 400W |
| Product Name: Industrial Power Supplies | Output Efficiency: 87% |
| Certification: ISO9001, CE, 3C, FCC, TLC | Max. Output Current: 15A |
| Application: Industrial Equipment | Temperature Coefficient: ±0.03 % / °C |
Payment & Shipping Terms:
| Minimum Order Quantity: | 1 set |
| Price: | negotiation |
| Payment Terms: | L/C, T/T, D/A, D/P, Western Union |
| Supply Ability: | 20,000 sets per month |
| Delivery Time: | 7-10 working days |
| Packaging Details: | carton/wooden case |
1. Description
The GPDD401M28-1A industrial power supply support wide input voltage range (-40VDC to -56VDC), with single way output. The power supply includes the following functions: input over/under voltage protection, output short-circuit protection, over current protection etc. The power supply is designed strictly in accordance with the safety regulations, which conforms to the safety standards and requirements of information technology.
2. Technical Parameters
| Ambient conditions | |||||
| Parameters | Min | Typical | Max | Unit | Note |
| Operating temperature | -40 | 25 | 70 | °C | |
| Storage temperature | -40 | 25 | 70 | °C | |
| Relative humidity | 95 | % | non-condensing | ||
| Altitude | 3000 | m | |||
| Atmospheric pressure | 70 | 106 | KPa | ||
| Cooling | Natural cooling | ||||
| Input | |||||
| Parameter | Min | Typical | Max | Unit | Note |
| Input voltage range | -40 | -48 | -57 | Vac | |
| Basic output characteristics | ||||||
| Parameter | Min | Typical | Max | Unit | Note | |
| Output voltage range | +28V | 28 | Vdc | Adjustable | ||
| Output current range | +28V | 0 | 15 | A | ||
| Load regulation | ±1.5 | % | ||||
| Voltage regulation accuracy | ±1 | % | ||||
| Line regulation | ±0.5 | % | ||||
| Ripple (peak to peak value) | +28V | 1% Nominal output voltage value | % | At rated input/output, with one 0.1uF ceramic capacitor and one 10uF electrolyte capacitor condition, bandwidth is 20MHz. | ||
| Output power | 400 | W | ||||
| Output efficiency | 87 | % | Rated input and load | |||
| Temperature coefficient | ±0.03 | %/°C | At 20 °C environment temperature | |||
| Load effect recovery time | 200 | uS | Load mutation, overshoot ≤ ±5% rated output voltage | |||
| Turn on/off overshoot | ±5 | % | ||||
| Protection | |||||
| Parameter | Min | Typical | Max | Unit | Note |
| Input over-voltage protection | -65 | -72 | Vdc | Self-recovery | |
| Input under-voltage protection | -36 | Vdc | Self-recovery | ||
| +28V output over-voltage protection point | 31 | V | |||
| +28V output current-limiting protection point | 15.75 | 21.75 | A | Constant current and cut-off protection way, automatic recovery, can use the hiccups | |
| Short-circuit protection | Long-time short-circuit,self-recovery | ||||
| Over-temperature protection | °C | Yes | |||
| EMC and others | |
| Parameter | Standard and requirements |
| CE | EN55022 - Class B |
| RE | EN55022 - Class B |
| Surge | EN61000-4-5 LEVEL 3, line-line 2KV, line-earth 4 KV |
| ESD | EN61000-4-2 contact discharge: ±6KV, air discharge: ±8KV. (criterion B) |
| RS | EN61000-4-3 test frequency: 27MHz~800MHz, 800MHz~ 960MHz, 960MHz~1400MHz, 1.4GHz~2GHz; electric field intensity: 3V/m; 10V/m; 3V/m; 10V/m; Amplitude modulation: 80%AM(1kHz) |
| CS | EN61000-4-6 test frequency: 0.15 MHz~ 80 MHz, test strength: 3V, amplitude modulation: 80%AM(1kHz) |
| EFT/B | EN61000-4-4 |
| Voltage dips and short interruptions | EN61000-4-11 fall to 30%Ut, duration 10ms; fall to 60%Ut, duration 500ms; fall to 95%Ut, duration 5000ms; criterion B, criterion C |
| Vibration | Frequency 10 Hz~55 Hz(Sine scanning), amplitude 0.35 mm |
| Shock | Peak acceleration 150 m/s2, duration 11 ms |
| Collision test | Collision waveform: half sine wave; peak acceleration: 180m/s2; pulse width: 6ms; collision direction: 6 direction; collision times: 100 times at each direction. |
| Static pressure test | TL=Wt×(S-1)×F×9.8(N) TL: pressure value, unit: N; Wt: package weight, unit: kg; S: allowed stacking layer, select the largest stacking layer; F: safety coefficient, usually choose 5; time to put pressure: 2 h |
| Moisture proof | GB/T2423.4-1993 alternating damp heat test, 24~ 45°C, 95%RH,48h |
| Mold proof | GB/T2423.16-1999 mold test , grade 2 |
| Cooling | Module natural conduction cooling |
| Noise | 55dB(A)； test distance 1m |
| MTBF | MTBF≥200,000h |
| Annual return rate | ≤1% |
| Smelling requirements | No peculiar and harmful smell |
| Safety and insulation grade | ||
| Parameter | Requirement | Note |
| Input –output | 1000Vac/10mA//1min | No flashover, no breakdown, remove discharge tube when testing |
| Input –earth | 1000Vac/10mA//1min | |
| Output –earth | 500Vdc/10mA//1min | |
| Grounding resistance | <0.1Ω | |
| Insulation resistance | ≥10MΩ | In normal atmospheric pressure, when relative humidity is 90%, testing voltage is 500VDC, the insulation resistance of input-output, input-grounding, output-grounding are all ≥10MΩ |
| Leakage current | ≤3.5mA | |
| Grounding resistance | <0.1Ω | |
| Mechanical Features | |
| L×W×H (mm) | 230×61×47.5mm |
| Weight(kg) | ≤1Kg |
3. Alarm
| Item | Yes/No | Technical index | Note |
| Power failure alarm signal |
Yes |
Input: normal, output: low impedance; Input: failure, output: high impedance;
| When DC input fails, alarm signal of +28V output at full load rise to +2.2V, (need to add pull-up resistor when test). Time interval for +28 V falling to +15V shall not be less than 1 ms. |
| Input normal LED display |
Yes | Use indicator light (red): red light turn on means input is normal | |
| Output normal LED display |
Yes | Use indicator light (green): green light turn on means output 28V is normal |
4. Packing and Shipping
5. Our Delivery Agent
The goods can be shipped by sea, by air, by courier, by land, by train, etc. Besides the following delivery agent, we can also look for the delivery agent with the best price in china if you need us to do for you.
6. Our Contact Information
Mobile Phone: 0086-13752765943
Telephone: 0086-0755 66600941
Email: info@estel.com.cn
lxf.estel@hotmail.com
Skype: fiona.liang10
Company Details
Business Type:
Manufacturer,Distributor/Wholesaler,Exporter
Year Established:
2002
Total Annual:
15 Million-20 Million
Employee Number:
101~200
Ecer Certification：
Verified Supplier
Introduction Tianjin Estel Electronic Science and Technology Co., Ltd (ESTEL(GUANGDONG)TECHNOLOGY CO., LTD), located in China, is a professional supplier of integrated outdoor telecom cabinet and temperature control solutions for outdoor telecom base station. As a science and tech... Introduction Tianjin Estel Electronic Science and Technology Co., Ltd (ESTEL(GUANGDONG)TECHNOLOGY CO., LTD), located in China, is a professional supplier of integrated outdoor telecom cabinet and temperature control solutions for outdoor telecom base station. As a science and tech...
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