Shenzhen Kuaiqu DC Power Supply User Manual

Company Information

Company: Shenzhen Kuaiqu Electronic Co., Ltd

Address: 5H138, 1 Haoguan, China south City, Pinghu, Longgang, Shenzhen, Guangdong, China.

Website: www.nice-power.com.cn

Email: nice_power@163.com

Phone: +8619925402565

Whatsapp: +8619925402565

Wechat: +8619925402565

Safety Brief

This manual contains important safety instructions that must be followed in the operation and storage environment of the SPPS/SPPS-S series. To ensure personal safety and that this product works in the best environment, please read this manual carefully before using.

When you get a brand-new power supply, perform the following checks to ensure the instrument is working properly:

1. Check for damages caused during transportation.
2. Check if all accessories are complete.
3. Check if the output voltage and output current are normal after turning on the device.

If any problems are found, please contact the merchant immediately.

Safety Symbols

The safety symbols below will appear in this manual or on the DC power supply:

• ! Attention
• ⚡ High Voltage
• ⏚ Grounding

Product Brief

The SPPS/SPPS-S Series adjustable DC regulated power supply is specially designed for laboratories, schools, and students. The output voltage and current can be continuously adjusted between 0 and the nominal value.

The power supply offers excellent stability and ripple factor, along with a perfect protection circuit. It can operate at full load for extended periods. This power supply can function as both a regulated power supply and a regulated current supply.

Specifications

1. Switchable DC regulated power supply

2. Switchable DC regulated power supply

The above parameters are measured at an ambient temperature of 25 ± 5°C, relative humidity: <80%RH, and preheated for 30 minutes. The actual parameters may vary slightly.

Panel Instruction

Front Panel Layout:

• 1 Output Voltage Display / Set Voltage Display
• 2 Output Current Display / Set Current Display
• 3 Output Power Display
• 4 Constant Voltage Indicator (CV)
• 5 Constant Current Indicator (CC)
• 6 Store Recall Button
• 7 Output ON/OFF Button
• 8 Front Panel Lock Button
• 9 Voltage and Current Adjustment Switch Button
• 10 Voltage and Current Tuner / Coarse Tuner
• 11 Power Switch
• 12 +Positive Polarity (Red)
• 13 Grounding (Green)
• 14 -Negative Polarity (Black)

Rear Panel Layout:

• Cooling Fan
• Power Socket
• Fuse Box

Operation Instructions

Power On/Off

Press the POWER switch. The display screen initializes, showing the parameter settings from the last shutdown. Press the power switch again to turn the power supply off.

Status Indicator

• CV Indicator: The Constant Voltage indicator is on when the power supply is operating in constant voltage mode.
• CC Indicator: The Constant Current indicator is on when the power supply is operating in constant current mode.

Output Parameter Setting

1. Connect the load to the front panel terminals.
2. Set the output voltage and current. Press the VA button to switch between voltage and current adjustment. Adjust the voltage and current using the tuner. For fine tuning, use the tuner directly. For coarse tuning, press the ADJUST button. Each press of ADJUST moves the cursor one position to the left.

Save/Call Settings

The front panel settings can save 4 groups of internal memories.

Save Settings: Press the corresponding memory keys (M1~M4). The power supply will automatically save the set voltage and current values.

Call Settings: Press the corresponding memory keys (M1~M4) to recall the parameter value saved in that memory. The lights for the selected memory keys (M1-M4) will illuminate, indicating the currently recalled memory group.

Output On/Off

Press the ON/OFF button to turn the output on. The output key light will illuminate. Press the output button again to turn off the power output; the output key light will turn off.

Note: When recalling settings from memory, the output will be automatically turned off.

Locking the Front Panel

Press the LOCK button. The button light will turn on, and all buttons and knob operations on the front panel (except On/Off) will be locked. To release the lock, press LOCK again; the button light will turn off, and panel operations will resume.

Work Requirement

1. AC Input: Ensure the input voltage matches the product's requirement: 230V±10% or 115V±10%.
2. Environment: Do not use the device in environments where the ambient temperature exceeds 40 degrees Celsius. Ensure adequate space for the cooling fan located at the rear of the device for proper cooling.

Connect the Load

1. Rotate the terminal knob counterclockwise.
2. Insert the load terminal.
3. Turn the terminal knob clockwise.
4. Banana plugs can be inserted directly into the terminal holes.

Warning: Incorrect AC voltage input can cause serious damage to the device. Please ensure the required input voltage value is correct.

Attention: Improper connection may result in damage to the power supply and the connected load. When connecting a battery load, do not reverse the polarity of the '+' and '-' terminals, as this may damage the power supply.

Constant Voltage / Constant Current Characteristics

This series of power supplies features automatic conversion between constant voltage and constant current modes, adapting to load changes. The point where constant voltage transitions to constant current is called the conversion point.

For example, if the load requires the power supply to operate in constant voltage mode, a constant voltage is output. As the load increases, the output voltage remains constant, and the output current increases. When the current reaches the set limit, the power supply automatically switches to constant current mode. The output current remains stable, and the output voltage decreases proportionally as the load increases further. The conversion between constant voltage and constant current modes is indicated by the LEDs on the front panel.

• CV Indicator: On during constant voltage operation.
• CC Indicator: On during constant current operation.

Fuse Replacement

If the fuse blows, the power supply will stop working. Identify and correct the cause of the blown fuse, then replace it with a fuse of the same specification.

Procedure:

• First, remove the power plug.
• Open the fuse cabin as shown in the illustration.
• Replace the fuse with one of the same specification.
• Close the fuse cabin.

Note: For effective safety protection, only replace the fuse with one of the specified rating. Before replacing the fuse, ensure the power is turned off and the power cord is unplugged from the outlet.

⚡ HIGH VOLTAGE! DANGER!

Product Maintenance

1. Disconnect the power when the product is not in use.
2. Unplug the power supply before cleaning.
3. Do not use hydrocarbons, chlorides, or similar solvents, or abrasive cleaners.

Product Warranty

1. This product is offered with a one-year free maintenance service from the date of purchase, excluding the following cases:
• A: Lack of this product's warranty card.
• B: Failures caused by improper use, such as improper handling, repair, modification, or adjustment of the device.
• C: Consumable materials are not covered by the warranty.
• D: Naturally irresistible disasters such as floods, fires, earthquakes, etc.
2. Maintenance costs for repairs exceeding the warranty period will be charged, and these costs are the user's responsibility.

Packing List

1. 1x Power Supply
2. 1x Power Cord
3. 1x Output Load Cord
4. 1x User's Manual
5. 1x Warranty Card