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PCH 4000V 4kV 2A 3A 5A 10A 15A 15A 20A DC Power Supply 10kW 20kW to 60kW 75kW 80kW
PCH 4000V 4kV 2A 3A 5A 10A 15A 15A 20A DC Power Supply 10kW 20kW to 60kW 75kW 80kW
- PCH 4000V 4kV 2A 3A 5A 10A 15A 15A 20A DC Power Supply
- Rated voltage 4000V (4kV)
- Negative polarity at request
- Rated power 10kW 20kW to 60kW 75kW 80kW
- Low ripple 0.2%FS rms
- List mode function
- Auto Run function
- Interlock loop function
- No overshoot during startup
- Soft start by hardware, and adjustable voltage rise time by software
- Constant voltage and constant current operations, auto CV/CC switch
- Multiple protections: OVP, OTP, ACF and current limit protections
- Standard interface: RS232 & RS485, support ModBus-RTU commands
- Options: DC 0-5V, 0-10V or 4mA interface for control and feedback
- Options: LAN interface
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Twintex PCH 4000V (4kV) high-voltage and high-power DC power supplies are mainly used in sectors requiring extremely high voltage and substantial energy, such as advanced industrial manufacturing, new energy, scientific research, and national defense. Their core function is to deliver stable, controllable high-voltage and high-current output to meet the rigorous demands of specific processes or testing protocols.
Component burn-in testing represents the most fundamental application of 4000V (4kV) DC power supplies. In the burn-in testing of 3000V-4000V high-voltage devices, the PCH 4000V (4kV) DC power supplies in the 10kW to 80kW range play a pivotal role; they simulate extreme operating conditions to expose early-stage defects and verify long-term reliability of high-voltage power devices — whether in the form of wafers, discrete components, or power modules:
- Silicon-based power devices: such as IGBTs (Insulated Gate Bipolar Transistors), MOSFETs (Metal-Oxide-Semiconductor Field-Effect Transistors), thyristors, and VDMOS (Vertical Double-diffused MOSFETs).
- Wide-bandgap power devices: such as SiC MOSFETs (Silicon Carbide MOSFETs), SiC diodes, etc.
- High-voltage modules and components: such as high-voltage IGBT modules, power modules, high-voltage electron tubes, etc.
Different power ratings correspond to specific test subjects and scenarios:
- 4000V 10kW to 20kW DC Power Supply: Suitable for medium-to-high-power discrete devices (such as certain IGBTs and MOSFETs) and small power modules, or for use at individual stations within a multi-station parallel burn-in setup. Also applicable to high-voltage electrical aging tests for materials.
- 4000V 30kW to 40kW DC Power Supply: Suitable for high-power IGBT/MOSFET modules and high-voltage SiC modules; can be used to drive high-power electronic loads or for the burn-in of high-voltage capacitors.
- 4000V 60kW to 80kW DC Power Supply: Suitable for burn-in testing (including full-load tests) of ultra-high-power modules or complete assemblies (such as modules used in rail transportation and wind power converters).
Typical test methods generally employ the following aging modes:
- Constant-current aging: Maintain a constant output current while monitoring voltage changes.
- Constant-voltage aging: Maintain a constant output voltage while monitoring current changes.
- Cyclic aging: Cycle the power supply between voltage and current set points to simulate complex real-world operating conditions, thereby revealing potential issues more comprehensively.
Product Parameters
PCH 4000V 4kV 2A 3A 5A 10A 15A 15A 20A DC Power Supply 10kW 20kW to 60kW 75kW 80kW
| Model | Rated Output | Model | Rated Output | |||||
| V | A | W | V | A | W | |||
| PCH10K-40H | 4000V | 0~2.5A | 10kW | PCH10K-40HN | -4000V | 0~2.5A | 10kW | |
| PCH15K-40H | 4000V | 0~3.75A | 15kW | PCH15K-40HN | -4000V | 0~3.75A | 15kW | |
| PCH20K-40H | 4000V | 0~5A | 20kW | PCH20K-40HN | -4000V | 0~5A | 20kW | |
| PCH25K-40H | 4000V | 0~6.25A | 25kW | PCH25K-40HN | -4000V | 0~6.25A | 25kW | |
| PCH30K-40H | 4000V | 0~7.5A | 30kW | PCH30K-40HN | -4000V | 0~7.5A | 30kW | |
| PCH35K-40H | 4000V | 0~8.75A | 35kW | PCH35K-40HN | -4000V | 0~8.75A | 35kW | |
| PCH40K-40H | 4000V | 0~10A | 40kW | PCH40K-40HN | -4000V | 0~10A | 40kW | |
| PCH45K-40H | 4000V | 0~11.25A | 45kW | PCH45K-40HN | -4000V | 0~11.25A | 45kW | |
| PCH50K-40H | 4000V | 0~12.5A | 50kW | PCH50K-40HN | -4000V | 0~12.5A | 50kW | |
| PCH60K-40H | 4000V | 0~15A | 60kW | PCH60K-40HN | -4000V | 0~15A | 60kW | |
| PCH65K-40H | 4000V | 0~16.25A | 65kW | PCH65K-40HN | -4000V | 0~16.25A | 65kW | |
| PCH70K-40H | 4000V | 0~17.5A | 70kW | PCH70K-40HN | -4000V | 0~17.5A | 70kW | |
| PCH75K-40H | 4000V | 0~18.75A | 75kW | PCH75K-40HN | -4000V | 0~18.75A | 75kW | |
| AC Input | 3φ4W (L1, L2, L3, PE), 380V±10% 47~63Hz (at default) 3φ4W (L1, L2, L3, PE), 415V/440V/480V±10% 47~63Hz (at request) | |||||||
For the purpose of product improvement, specifications are subject to change without prior notice.
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Frequently Asked Questions
A DC power supply is to supply voltage and current in constant voltage (CV) or constant current (CC) mode within the rated output range. Such working characteristics is called a constant voltage/constant current automatic cross-over type. This permits continuous transition from constant current to constant voltage modes in response to the load change. The intersection of constant voltage and constant current modes is called the crossover point. Below figure shows the relationship between this crossover point and the load.
In CV mode, a regulated output voltage is provided. The output voltage remains constant as the load increases while the output current changes in response to the load changes, up till the present current limit point is reached. At that point, the output current becomes constant and the output voltage drops in proportion to the further increases in load.
Similarly, in CC mode, crossover from the CC to CV mode automatically occurs from a decrease in the load. A regulated output current is provided. The output current remains constant as the load decreases while the output voltage changes in response to the load changes.
A power supply with CV and CC operation mode can be operated in only one mode according to load situation. The power supply is in CV mode when the actual load is over the preset load capacity; and the power supply is in CC mode when the actual load is below the preset load capacity.
When the power supply is connected to a big capacitive load, it always causes increase to the output voltage in a power supply. The output voltage may make fast increase to the Over Voltage Protection point. It may also cause slow decrease when the output voltage is turned down.
To solve this problem, connect a power resistor in parallel to the output terminals of the power supply; at the same time, connect a diode in serial between output terminals and the load.
When an inductive load is connected to the power supply, it will cause a reverse polarity induction electric motive force when the power supply is turned on or off, or when preset the output voltage. The pulse noise caused by an inductive load will also affect the power supply, especially when the pulse noise has the same polarity with the output of power supply.
To avoid effect or damage to the power supply, connect a diode in serial between the output terminals of power supply and the load; at the same time, connect a power resistor and a capacitor in parallel to the load to make a R-C snubbed circuit, which will significantly restraint generation of the noise.
When use the power supply to charge a battery, such as accumulator and ni-mh battery, the recommended protection measures is to connect a diode between the power supply and the battery. When the output electrolytic capacitor of the power supply is charged, connecting a load (battery) may cause sparks. This is normal. After the two of them get to equal voltage, the sparks will disappear.
Even if the peak current of a pulse load, such as motor, bulb, DC-DC or DC-AC converter module, does not exceed the rated current of the power supply, it will also cause voltage drop or instability to the output.
A basic solution is to connect a inductor in serial between the power supply and the load. Or, choose a power supply with higher rated current.
If the pulse circuit has a small pulse width or low peak current, another solution is to connect a capacitor with large capacity. A reference to choose capacity of a capacity is: 1000uF capacity to a 1A current.
When the power supply is connected to a load that will cause reverse polarity current to the power supply output, the output voltage will increase, because the power supply cannot absorb the reverse polarity current from the load.
A solution is to connect a diode in serial between the output terminal and the load; at the same time, connect a discharge resistor in parallel to the load to absorb the reverse polarity current. When the reverse polarity current is a peak surge, connect the large electrolytic capacitor in parallel to the two ends of the load.
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