Product Features
KH-SK/DC3000V3A high-voltage DC power supply, input is AC 380V ± 10%, 50Hz ± 10% of the mains power; Output DC voltage of 3000V, current of 3A; with protection functions such as output current limit, voltage limit, short circuit, overvoltage, overload, etc., mostly used for capacitor charging testing.
Main Technical Indicators
| Model | KH-SK/DC3000V3A（9KW） |
| Working Method | Automatic switching between stable voltage and current states |
| Input | AC380V±10% 50Hz±10% |
| Output | Continuous adjustable range of constant voltage value: 0~3000V |
| Continuous adjustable range of constant current value: 0~3A |
Voltage Stability Accuracy | Source effect | ≤ 0.3% rated value (rate of change in output voltage caused by ± 10% variation in input voltage) |
Load effect | ≤ 0.2% rated value (output voltage change rate caused by load variation from 10% to 90%) |
Time drifting | ≤ 0.2% rated value (output voltage change rate caused by continuous working time greater than 8 hours) |
Temperature drift | ≤ 0.03% rated value/℃ (due to the output voltage change rate caused by ambient temperature within the temperature range of power supply use) |
Voltage Stability Accuracy | Source effect | ≤ 0.5% rated value (output current change rate caused by input voltage variation of ± 10%) |
Load effect | ≤ 0.3% rated value (rate of change in output current caused by load variation from 10% to 90%) |
Time drifting | ≤ 0.3% rated value (output current change rate caused by continuous working time greater than 8 hours) |
Temperature drift | ≤ 0.05% rated value/℃ (due to the rate of change in output current caused by ambient temperature within the temperature range of power supply use) |
| Ripple (r.m.s) | ≤ 0.3% (output at rated voltage) |
| Voltage/Current Setting | Button+Knob Setting |
| Display Function | Display Mode | The voltmeter displays on a 4-digit LCD screen The ammeter displays on a 4-digit LCD screen. |
Display Resolution | Voltage meter 0.1V, current meter 0.01A |
Display Error | Voltage meter ≤ 0.5% ± 1 word, current meter ≤ 0.5% ± 1 word (within 10% -100% range) |
| Protection Method | Output current limiting, voltage limiting, short circuit, overvoltage, overload protection |
| Program Control and External Control Methods | Connect directly to the PC through CAN, RS485, 232, LAN interfaces, control the output voltage and current values through dedicated software, and monitor the working status of the power supply in real time on the computer to accurately grasp the load characteristics. |
| Power Size | W430*H264*L550)/Unit: mm |
| Working Method | Long term full load continuous work |
| Operating Temperature | -25℃~+50℃； Relative humidity<80% |
| Insulation Resistance | ≥20MΩ |
| Compressive Strength | 1500V 60S |
Introduction to Front Panel
① Power switch
② LCD display screen
③ Function buttons
④ Knobs and confirmation keys
Introduction to Rear Panel
①. Power output port
②. Remote communication interface
③. Voltage sampling ports at the far and near ends
④. AC input port
Attention: Please select the corresponding AC input wiring method according to the model used!
V-SENSE
Voltage sampling port Voltage sampling port
①. LS+: Local sampling positive electrode
②. LS -: Local sampling negative electrode
③. S+: Remote sampling positive electrode
④. S -: Remote sampling negative electrode
Remote Communication Interface
① The RS-232/RS-485 input and RS-485 output connectors on the rear panel can be connected to the RS-232/RS-485 interface. The connector is an 8-pin RJ-45 interface; The input and output connectors can connect the power supply and controller together through RS-232 or RS-485. Please refer to the following figure for input/output connectors:
Schematic diagram of pin configuration for rear panel input/output connector
Explanation:
The Tx and Rx pins are used for RS-232 communication.
The A/D+and B/D - pins are used for RS-485 communication.
