48V 50A switching power supply

Brand : Cassspower
Product origin : Shenzhen, China
Delivery time : 30 days
Supply capacity : 50K

48V 50A switching power supply

Feature:

·Wide range input from 90 to 264Vac.

·Protections: Short circuit / Over current / Over voltage/Over TEMP./Input under-voltage, it is reliability and stability.

·High efficiency is ≥91% .

·Complete protection function with high precision constant output current, low noise as well.

·The most economical & useful power supply with low wattage,100% full load burn-in test.

·Soft startup power supply, effectively reduce the impact degree of AC input.

·100% full load burn-in test.

·2 years warranty.

P.S: Red, Blue, Green indicators on the input panel; Green light turning on :Working well;Green Light &Red light turning on at the same time: Output under-voltage; Blue light & Green light; Turning on the same time: Input under-voltage or Over TEMP.


1. Electrical Requirements

1.1

Input Requirements

Item

Project

Technical Specifications

Unit

1.1.1

Input Voltage

100—240

Vac

1.1.2

Input Voltage Range

90—264

Vac

1.1.3

AC Input Voltage Frequency

47—63

Hz

1.1.4

Inrush Starting Current

≤80

A

1.1.5

Max Input Current

≤20

A

1.1.6

Efficiency

≥92%

1.1.7

Insurance

T/30A/250V

1.2

Output Requirements

Item

Project

Technical Specifications

Unit

1.2.1

Output Voltage

50

Vdc

1.2.2

Output Voltage Range

48.5-51.53%

Vdc

1.2.3

Load Output Current

50

A

1.2.4

Output minimum current

0

A

1.2.5

Max capacitive load

3800

uF

1.2.6

Load ADJ.Regulation

±3%

1.2.7

Voltage ADJ.Regulation

±1%

1.2.8

Ripple & Noise

≤480

mVp-p

1.2.9

ON/OFF overshoot amplitude

±5%

1.2.10

Dynamic

Response

Overshoot amplitude

±5%

µS

Recovery time

△t≤500

1.2.11

Start Time

≤3

S

1.2.12

Hold up Time

≥10

mS

1.3

Protection

Item

Project

Technical Specifications

Unit

1.3.1

Input under voltage

The input voltage can be recovered automatically after the input voltage is normal. The blue indicator is lights up.

Vdc

Input Over voltage

NA

Vdc

Output under voltage

48

Vdc

Output over voltage

54V-58V

Vdc

1.3.2

Over current

52A-58A

A

1.3.3

Over TEMP.

The power can be automatically recovered, after over temperature is relieved, and the return difference between the over temperature protection action point and the recovery point of the power over temperature protection device is not less than 5℃. Then blue indicator lights up.

.℃

1.3.4

Output short circuit

In the case of the maximum input voltage short circuit, the power supply is not bad and the short circuit can be recovered.


2. Isolation &Safety Requirements

Item

Project

Technical Specifications/

Testing Condition

2.1

Electrical strength

Input &

Output

3000Vac/10mA/1min

Input&earth connection

1500Vac/10mA/1min

Output&earth connection

500Vdc/5mA/1min

2.2

Insulation resistance

Input &

Output

≥50MΩ@500Vdc

Output&earth connection

≥50MΩ@500Vdc

Input&earth connection

≥50MΩ@500Vdc

2.4

Safety approval

Approval by EN60950GB4943 standard.

Safety leakage current

3.5mA


3. EMI/EMC Requirements

Item

Project

Technical Specifications/

Testing Condition

3.1

EMI

Conduction disturbance emission

CLASS A

Radiation disturbance emission

CLASS A

3.2

EMS

Conduction disturbance rejection

LEVEL 3 Criterion Asystem

Radiated immunity

LEVEL 3 Criterion Asystem

Electrostatic discharge immunity

Air discharge 8KV, Contact discharge 6KV, Criterion Bsystem

Power fast pulse group immunity

LEVEL3 ±2kV Criterion B

lightning surge

Differential mode + 4Kv common mode + 2kV criterion B

Voltage sag, short time interrupt and slowly varying immunity

Fall to 70%U, duration time:100ms, fall to 40%U, hold time 10ms, fall to 0%U, duration time: 10ms ,all phases meet the criteria B.

*PS:Testing criterion is formulated according to the system requirements.


Criteria A: performance within the scope of the technical requirements of the normal;

Criterion B (DIP test criterion):Power supply coordination system in the test process, allowing performance to reduce,After the interference is eliminated, the equipment can be recovered.Manual intervention is not allowed to occur in reset and in any manner.

Criteria B:(other test criteria except DIP): power supply with the whole machine through the test, the power supply output voltage in the test process is maintained in the normal range, the power off reset is not allowed, and part of the whole system function can be temporarily deteriorated or lost; can be recovers automatically.

Criterion C: allow the automatic reset function of the short time function, does not allow for a long time the function is interrupted or need to carry on the manual reset;

Criteria D: does not allow any device to be damaged beyond the protection of the device, and the replacement of damaged protective devices, the test pieces can restore performance.


4. Environmental Requirements

Item

Project

Technical Specifications

Unit

4.1

Working TEMP.

-10+50

4.2

Storage TEMP.

-25℃+70℃

4.3

Working Humidity

5%~95

4.4

Storage Humidity

5%~95

4.5

Altitude

3000

m

4.6

Cooling mode

Cooling with built-in DC fan



6. Mechanical structure

Item

Project

Technical Specifications

Unit

6.1

Dimension

275mm*82mm*111mm

mm

6.2

Installation Dimension

Refer to the figure 1

6.3

Output connecting terminal

Refer to the figure2

6.4

Package


7. Attached Drawings and Tables

Figure1 Installation dimensions


Output connection terminal definition


Output connection terminal definition

Connecting pin function

leading-out terminal

Definition

Function

1

Terminal 50V+

50V output positive

2

Terminal 50V-

50V output Negative


Drop curve


Packaging and Transport :

Standard export carton. Each piece is packed by vacuum plastic bag into a inner box then 48pcs to a carton.

Delivery Detail: 5-15working days against payment.

Our Services

1. Any inquiries will be replied within 24 hours;

2. Professional manufacturer , welcome to visit our website;

3. OEM/ODM available:

a) Print logo on our products

b) Customized specification

c) Customized color package box

d) Any your idea on our products,we can help you to design and put it into production

4. High qulity,fashion design,reasonable&competitive price,fast lead time

5. After-sale service:

a) All products will have been strictly quality checked in test house before packing

b) All products will be well packed before shipping

c) All products have 1-2 years warranty, and we sure the products will be free from maintenance within warranty period

6. Faster delivery:

Sample order in stock, and 3-7days for bulk production

7. Payment term:

L/C T/T open account transaction, westion union & paypal

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