UNI-T UTL8511A+ Programmable DC Electronic Load 150V 30A 200W

Product Description

The UNI-T UTL8511A+ Programmable DC Electronic Load is a high-precision electronic load designed for testing and evaluating DC power sources, batteries, adapters, chargers, power supplies, and other electrical systems. It provides a controlled and programmable load that electronically draws current from the device under test, allowing engineers and technicians to evaluate output regulation, current capability, protection functions, transient response, and overall power performance.

The UTL8511A+ supports input voltages up to 150V DC, currents up to 30A, and a maximum input power of 200W. These ratings make it suitable for a wide range of laboratory and production testing tasks involving low- and medium-power DC sources. The maximum current and voltage cannot necessarily be applied simultaneously because the electronic load is also limited by its 200W maximum power rating.

The instrument provides several operating modes, including Constant Current (CC), Constant Voltage (CV), Constant Resistance (CR), and Constant Power (CP). These modes allow the load behavior to be selected according to the type of power source being tested. For example, CC mode can be used to evaluate a power supply at a fixed current, while CP mode is useful for testing the response of a source under a constant power demand.

For dynamic testing, the UTL8511A+ supports a maximum dynamic frequency of 50kHz and a programmable current slew rate from 0.0006A/μs to 3A/μs. This allows engineers to apply rapidly changing load conditions and evaluate how a power supply or converter responds to transient current demands. The instrument is therefore useful for testing switching power supplies, DC-DC converters, battery systems, and other dynamic power circuits.

The UTL8511A+ provides high-resolution measurement with 0.01mV and 0.01mA resolution, allowing detailed observation of voltage and current during testing. The unit also includes programmable test functions that can be used for repetitive measurements and automated evaluation.

Communication is provided through an RS-232 interface, supporting integration with computer-based test systems. This makes the UTL8511A+ suitable for laboratory automation, production testing, and applications where measurements and test sequences need to be controlled or recorded electronically.

Protection functions help protect the electronic load and the connected device under test. The UTL8500+ family also supports functions such as over-voltage, over-current, over-power, over-temperature, and reverse-polarity protection. These features are particularly useful when testing power sources under abnormal or demanding operating conditions.

With its programmable operating modes, high measurement resolution, dynamic-load capability, and RS-232 connectivity, the UNI-T UTL8511A+ is suitable for professional power-electronics laboratories, engineering development, production testing, battery evaluation, and maintenance applications.

Features

• Programmable DC electronic load

• Maximum input voltage of 150V DC

• Maximum input current of 30A

• Maximum input power of 200W

• CC, CV, CR, and CP operating modes

• Dynamic load testing up to 50kHz

• Current slew rate from 0.0006A/μs to 3A/μs

• High measurement resolution of 0.01mV / 0.01mA

• Programmable test and measurement functions

• RS-232 interface for remote control and test automation

• Multiple protection functions

Specifications

The UTL8511A+ specifications above are based on UNI-T's current product information and catalog data.

Applications

• DC power supply testing

• Switching power supply evaluation

• DC-DC converter testing

• Battery and battery-pack testing

• Charger testing

• Adapter and power-source testing

• Transient response evaluation

• Production-line power testing

• Automated Test Equipment (ATE)

• Power electronics research and development