KUAIQU R-SPS-S Series High-Power DC Power Supply

 (1500W–3000W)  Operating Instructions

When your application requires high output power, precise voltage/current regulation, programmable control, and comprehensive protection, the KUAIQU R-SPS-S Series is built to meet professional demands.

Covering 1500W to 3000W, the R-SPS-S Series combines compact industrial design, four-group memory storage, intelligent protection functions, programmable communication, and excellent output stability, making it suitable for laboratories, production lines, battery testing, automotive electronics, communication equipment, R&D, and industrial automation.

Available Models

Compact Design with Industrial Power

Although the R-SPS-S Series delivers up to 3000W of output power, its structure remains surprisingly compact.

• 450W–1200W models: approximately 2.5 kg
• 1500W–3000W models: approximately 5.8/7.5 kg

Compared with traditional 450W–1200W high-power DC power supplies, the R-SPS-S Series has a noticeably larger chassis to accommodate its much higher output capability while maintaining excellent portability and heat dissipation.

POWER Button – Manual Power On/Off

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The POWER button controls the main power of the unit.

Simply press the POWER button to:

• Turn the power supply ON
• Turn the power supply OFF

This provides complete manual control over the device before beginning any testing operation.

OUTPUT Button – Output Only When You're Ready

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Unlike many conventional power supplies, turning on the R-SPS-S Series does not immediately energize the output terminals.

After setting your desired voltage and current:

• Press the OUTPUT button.
• The output becomes active.
• Press it again to immediately disable the output.

This design greatly improves operational safety and prevents accidental voltage output while adjusting parameters.

OVP (Over Voltage Protection)

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The programmable OVP (Over Voltage Protection) feature protects your equipment from excessive voltage.

How to Configure OVP

1. Press and hold the OVP button for 5 seconds.
2. The voltage value begins flashing.
3. Adjust your desired protection voltage.
4. When the value stops flashing, the setting has been saved successfully.

During operation:

Simply press the OVP button once.

The OVP indicator lights green, indicating that over-voltage protection is enabled using your preset voltage limit.

This protects sensitive electronic devices from accidental over-voltage.

OCP (Over Current Protection)

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The programmable OCP (Over Current Protection) allows users to limit maximum output current.

How to Configure OCP

1. Press and hold the OCP button for 5 seconds.
2. The current value flashes.
3. Adjust the desired current limit.
4. When flashing stops, the setting is saved.

To activate OCP:

Simply press the OCP button.

The indicator turns green, meaning current protection is active using your preset current limit.

This greatly improves safety during battery charging and electronic testing.

LOCK Button – Prevent Accidental Operation

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During long testing sessions, accidental button presses may interrupt testing.

The LOCK function prevents this.

Simply press the LOCK button once.

Once activated:

• The display is locked.
• Other buttons become inactive.
• Voltage and current settings cannot be changed accidentally.

Ideal for production environments and continuous testing.

MEMORY Function – Four Preset Configurations

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Frequently changing voltage and current settings wastes valuable time.

The R-SPS-S Series includes 4 programmable memory groups.

Save Settings

1. Set the desired voltage and current.
2. Press and hold one MEMORY button for 3 seconds.
3. The settings are stored.

Later, simply press the corresponding MEMORY button once to instantly recall your saved parameters.

This function is especially useful for:

• Repetitive testing
• Production lines
• Battery charging
• Electronic repair
• Laboratory work

More importantly, it minimizes the risk of outputting incorrect voltage or current during operation.

SCP (Short Circuit Protection)

No configuration is required.

The R-SPS-S Series features built-in Short Circuit Protection (SCP).

Whenever an accidental short circuit occurs, the protection activates automatically to protect both the power supply and the connected equipment.

This greatly reduces the risk of hardware damage caused by unexpected short circuits.

OTP (Over Temperature Protection)

The R-SPS-S Series uses an intelligent temperature-controlled cooling system.

When the internal temperature exceeds 50°C, the cooling fan automatically starts.

Benefits include:

• Lower operating temperature
• Extended component lifespan
• Stable long-term operation
• Improved reliability during high-power applications

Additional Features You Should Know

Silent Mode

The rotary encoder normally provides audible feedback.

For quiet environments, simply enable Silent Mode to mute the button and knob sounds.

Perfect for laboratories and offices.

Front and Rear Output Terminals

The front output terminals support up to 5A.

For output currents above 5A, please use the rear output terminals to ensure safe and reliable high-current operation.

PC Programmable Control

The R-SPS-S Series supports professional computer control.

Standard Communication

• RS232
• USB

Optional

• RS485

The power supply communicates using the MODBUS protocol, making it easy to integrate into industrial automation systems.

A free PC control software is included.

Using the software, users can:

• Control voltage and current remotely
• Monitor output in real time
• Save up to 100 groups of parameters
• Export operating data
• Generate graphs
• Capture screenshots
• Record testing history

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Insert software interface screenshots.

Step/List Sequence Programming

For automated testing applications, the R-SPS-S Series supports Step/List programming.

Users can automatically execute multiple voltage and current profiles without manual intervention.

Typical applications include:

• Battery charging cycles
• LED aging tests
• Motor testing
• Product burn-in
• Automatic production testing

Watch the Operation Video

To help you get started quickly, we've prepared a complete operation guide on YouTube.

▶ YouTube Tutorial

Need Assistance?

If you have any questions about selecting the right model, software installation, communication protocols, or operation, our technical support team is always ready to help.

Feel free to contact KUAIQU anytime. We're committed to providing professional products, reliable service, and long-term technical support for customers worldwide.