This high-voltage DC power supply is a custom-made special power supply, featuring small size, light weight, high efficiency, and built-in fan for heat dissipation. Itsmaximum operating efficiency is ≥97%. The power module adopts an aluminum shell design, which is lightweight, aesthetically pleasing, and waterproof, and can be used as a substitute for imported high-voltage DC module power supplies.
1.2 Product Features
DC-DC isolated power converter: Converts the input 1000V DC power into 50V DC power in an isolated manner, with a rated output power of 18KW.
High power density, small size, and light weight.
Designed to meet power supply reliability requirements: Equipped with over/under-voltage protection for input, and over-voltage protection, current limiting, short-circuit protection, and over-temperature protection for output.
1.3 Product Photo
Input +
Output ·
1.4 Main Product Specifications
Input Voltage Range
Rated Output Voltage
Rated Output Power
Efficiency
Voltage Regulation Accuracy
Output Ripple and Noise
900~1000Vdc
50±0.5Vdc
18KW
≥97%
≤±1%
≤±2%Vo
4 2. Environmental Conditions
Serial Number
Item
Technical Index
Unit
Remarks
1
Operating Temperature
-40℃~+55℃
℃
2
Storage Temperature
-40℃~+80℃
℃
/
3
Relative Humidity
≤95
%
No condensation (40℃±2℃)
4
Altitude
0-3000
m
5
Atmospheric Pressure
76~106
Kpa
/
6
Heat Dissipation Method
Built-in Air Cooling
/
/
5 3. Electrical Characteristics
3.1 Input Characteristics
Serial Number
Item
Technical Requirement
Unit
Remarks
1.1
Rated Input Voltage
950
Vdc
1.2
Input Voltage Range
900~1000
Vdc
1.3
Maximum Input Current
16
A
Vin=900Vdc, Po=12KW
3.2 Output Characteristics
Serial Number
Item
Technical Requirement
Unit
Remarks
2.1
Rated Output Voltage
50
Vdc
/
2.2
Output Voltage Range
49.5~50.5
Vdc
2.3
Rated Output Current
360
A
/
2.4
Rated Output Power
18
KW
/
2.5
Output Efficiency
≥97
%
Vin=950Vdc, half load
2.6
Voltage Regulation Accuracy
±1
%
/
2.7
Line Regulation
±1
%
/
2.8
Load Regulation
±1
%
/
2.9
Output Ripple and Noise
±2
%/Vo
Bandwidth limited to 20MHz; 10uF electrolytic capacitor and 0.1uF film capacitor connected in parallel at the test terminal; rated load
2.10
Temperature Coefficient
±0.02
%/℃
/
2.11
Output Rise Time
≤200
ms
/
2.12
Power-on Output Delay
≤5
S
Rated input
2.13
Power-on/Power-off Overshoot Amplitude
△V: ≤±5
%
/
2.14
Dynamic Response Overshoot
△V: ≤±5
%
/
2.15
Dynamic Response Recovery Time
≤2
ms
75%~50% load change at 25℃; 25%~50%~25% or 50%~ (remaining load change range to be supplemented)
3.3 Protection Characteristics
Serial Number
Item
Technical Requirement
Unit
Remarks
3.1
Input Under-voltage Protection
730~770
Vdc
Hysteresis greater than 15V
3.2
Input Under-voltage Recovery
780~800
Vdc
3.3
Input Over-voltage Protection
1030~1070
Vdc
Hysteresis greater than 15V
3.4
Input Over-voltage Recovery
1000~1030
Vdc
(Note: The original "1030~1000" is adjusted to "1000~1030" for logical consistency, as recovery voltage should be lower than protection voltage)
3.5
Output Over-voltage Protection
52~55
Vdc
Self-recoverable
3.7
Output Over-current Protection
380~420
A
Self-recoverable
3.8
Output Short-circuit Protection
Long-term short-circuit allowed
Self-recoverable
3.9
Over-temperature Protection
70
℃
Case temperature
3.10
Over-temperature Recovery
60
℃
6 4. Safety Characteristics
Serial Number
Item
Test Condition
Remarks
1
Dielectric Strength
Input to Output
2500Vdc/10mA/1min
No arcing, no breakdown
Input to Enclosure
2500Vdc/10mA/1min
Output to Enclosure
500Vdc/10mA/1min
2
Insulation Resistance
Input to Output
≥10MΩ@500Vdc
Under normal atmospheric pressure, relative humidity of 90%, and test DC voltage of 500V
Input to Enclosure
≥10MΩ@500Vdc
Output to Enclosure
≥10MΩ@500Vdc
7 5. Other Characteristics
5.1 Flame Retardant Requirement
The flame retardant grade of the PCB used in the system shall meet the V-0 requirement specified in GB4943.1-2011.
The flame retardant grade of the insulated cables shall meet the requirement specified in GB/T 18380.12-2008.
The flame retardant grade of other insulating materials shall meet the V1 requirement specified in GB4943.1-2011.
5.2 System Noise
The system noise shall not exceed 45dB(A).
5.3 System Reliability
Test conditions: 25℃, rated input, full-load output; predicted by the stress method in MIL-HDBK-217F Notice 2.
(Note: The original document lacks specific MTBF data; it is recommended to supplement it according to actual product performance if needed)
5.4 Protection Level
The protection level shall meet the IP65 requirement. No water accumulation is allowed on the top of the power supply enclosure.
5.5 Three-proof (Moisture-proof, Mildew-proof, Salt Spray-proof)
The printed circuit boards, connectors, and other circuits in the product shall be treated with moisture-proof, mildew-proof, and salt spray-proof measures. Among them, the salt spray resistance shall meet the requirements in Table 9 of GB/T 4797.6, ensuring that the product can operate normally in outdoor humid and sweat-salt spray environments.
8 6. Product Label
8 6. Product Label
9.2 Connector Definition
Connector Pin No.
Function Name
Definition
Remarks
XT60
DC Input
VIN+
High-voltage input positive pole
VIN-
High-voltage input negative pole
M8
DC Output
OUT+
Low-voltage output positive pole
OUT-
Low-voltage output negative pole
9.3 Weight
Net Weight: 8.2Kg
10 8. Packaging, Transportation, Storage
8.1 Packaging
The packing box shall be marked with the product name, model, manufacturer's logo, inspection certificate of the manufacturer's quality department, manufacturing date, etc.
An accessory list shall be included in the packing box.
8.2 Transportation
The product shall be packed in a sturdy packing box during transportation.
The outer surface of the box shall comply with the provisions of relevant national standards and be marked with signs such as "Handle with Care" and "Moisture-proof".
The packing box containing the product may be transported by any means of transportation.
During transportation, direct exposure to rain and snow and mechanical impact shall be avoided.
8.3 Storage
Unused products shall be stored in the packing box.
The warehouse environment shall have a temperature of -10~40℃ and a relative humidity not exceeding 80%.
The warehouse shall be free of harmful gases, flammable and explosive products, and corrosive chemicals, and shall be free of strong mechanical vibration, impact, and strong magnetic fields.
The packing box shall be placed at least 20cm above the ground and at least 50cm away from walls, heat sources, windows, or air inlets.
The storage period under the specified conditions is generally 2 years. After 2 years, the product shall be re-inspected before use.
11 9. Safety Precautions
Once the safety protection of the equipment is damaged, the equipment must be stopped and handled in accordance with the relevant maintenance regulations.
When the power supply equipment is moved from a cold environment to a warm environment, condensation may cause electric leakage hazards. Therefore, the grounding requirement must be strictly implemented; only qualified personnel are allowed to connect the equipment to the power supply.
After the power supply is cut off, the equipment must be shut down for 5 minutes to allow sufficient time for the capacitors to discharge before maintenance work is performed on the power supply equipment.
Pay attention to safety in use: Avoid touching parts marked with safety warning signs or high-voltage signs to prevent electric shock or burns.
12 10. Referenced Standards and Specifications
GB/T 2423.1-2001 Environmental Testing for Electric and Electronic Products - Part 2: Test Methods - Test A: Low Temperature
GB/T 2423.2-2001 Environmental Testing for Electric and Electronic Products - Part 2: Test Methods - Test B: High Temperature
GB/T 2423.3-1993 Basic Environmental Testing Procedures for Electric and Electronic Products - Test Ca: Steady-state Damp Heat Test Method
GB/T 2423.4-1993 Basic Environmental Testing Procedures for Electric and Electronic Products - Test Db: Cyclic Damp Heat Test Method
GB/T 2423.5-1995 Environmental Testing for Electric and Electronic Products - Part 2: Test Methods - Test Ea and Guide: Shock
GB/T 2423.6-1995 Environmental Testing for Electric and Electronic Products - Part 2: Test Methods - Test Ea and Guide: Bump
GB/T 2423.8-1995 Environmental Testing for Electric and Electronic Products - Part 2: Test Methods - Test Ed: Free Fall
GB/T 2423.10-1995 Environmental Testing for Electric and Electronic Products - Part 2: Test Methods - Test Fc and Guide: Vibration (Sinusoidal)
GB/T 2423.11-1997 Environmental Testing for Electric and Electronic Products - Part 2: Test Methods - Test Fd: Broadband Random Vibration - General Requirements
GB/T 2423.22-2002 Environmental Testing for Electric and Electronic Products - Part 2: Test Methods - Test N: Temperature Change
GB/T 14508-93 Mechanical Environmental Conditions for Road Freight Transportation
EN55022:1998 Information Technology Equipment - Radio Disturbance Characteristics - Limits and Measurement Methods
EN55024:1998 Information Technology Equipment - Immunity Characteristics - Limits and Measurement Methods
CEI IEC 61000-4-2 2001 Electromagnetic Compatibility (EMC) - Testing and Measurement Techniques - Electrostatic Discharge Immunity Test
CEI IEC 61000-4-3 2002 Electromagnetic Compatibility (EMC) - Testing and Measurement Techniques - Radiated, Radio-frequency, Electromagnetic Field Immunity Test
CEI IEC 61000-4-4 1998 Electromagnetic Compatibility (EMC) - Testing and Measurement Techniques - Electrical Fast Transient/Burst Immunity Test
CEI IEC 61000-4-5 1999 Electromagnetic Compatibility (EMC) - Testing and Measurement Techniques - Surge (Impact) Immunity Test
CEI IEC 61000-4-6 2001 Electromagnetic Compatibility (EMC) - Testing and Measurement Techniques - Immunity to Conducted Disturbances, Induced by Radio-frequency Fields
CEI IEC 61000-4-8 1993 Electromagnetic Compatibility (EMC) - Testing and Measurement Techniques - Power Frequency Magnetic Field Immunity Test
CEI IEC 61000-4-11 1994 Electromagnetic Compatibility (EMC) - Testing and Measurement Techniques - Voltage Dips, Short Interruptions and Voltage Variations Immunity Tests
CEI IEC 61000-4-29 2000 Electromagnetic Compatibility (EMC) - Testing and Measurement Techniques - Voltage Dips, Short Interruptions and Voltage Variations Immunity Tests for DC Input Ports
IEC 61000-3-2 2001 Electromagnetic Compatibility (EMC) - Limits - Limits for Harmonic Current Emissions (Equipment Input Current ≤16A per Phase)
IEC 61000-3-3 1994 Electromagnetic Compatibility (EMC) - Limits - Limitation of Voltage Fluctuations and Flicker in Low-voltage Supply Systems (Equipment Rated Current ≤16A)
GB4943-2001 Safety of Information Technology Equipment
YD/T 282-2000 General Test Method for Reliability of Telecommunication Equipment
GB/T 13722-92 Technical Requirements and Test Methods for Mobile Communication Power Supplies
YD/T 732-95 Test Method for DC-DC Converters for Telecommunication
YD/T 731-2002 High-frequency Switching Rectifiers for Telecommunication
GB14287.1-2005 Electrical Fire Monitoring Systems - Part 1: Electrical Fire Monitoring Devices
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