GW Instek PEL-3000E Series Programmable DC Electronic Load

GW Instek PEL-3000E Programmable DC Electronic Load
Download Technical Datasheet (pdf 952 KB)
For more information contact : Wichit Chamnangankah Tel.08-1832-7016, T2E$

GW Instek launches new PEL-3000E series programmable single-channel electronic load. In the series, PEL-3031E provides 300W (1V~150V/60A) and PEL-3032E provides 300W(2.5V~500V/15A) current sink capability. Inherited from the PEL-3000 series, PEL-3000E has an easy-to-read LCD panel and user-friendly interface. This model features high speed and accurate measurement capability for electronic component, battery, portable charger and power products that require low to medium power consumption.

The PEL-3000E series is designed for current sink operation starting from 60mA and aims at measurement applications, including charger, adapter, various power supply equipment, and portable charger.


  • 7 Operating Modes: CC, CV, CR, CP, CC+CV, CR+CV, CP+CV
  • Fast/ Normal Sequence Function
  • Soft Start
  • Battery discharge test
  • OCP, OPP test Automation
  • Max. Slew Rate: 2.5A/us
  • Dynamic mode
  • Protection: OVP, OCP, OPP, OTP, RVP, UVP
  • Remote Sense
  • Integrate voltage, current and power measurement functions
  • External Voltage or Resistance Control
  • Rear Panel BNC、Trigger IN/OUT
  • Analog External Control
  • USB/GPIB(Optional)


The PEL-3000E series provides four fundamental operating modes and three add-on modes of CC, CR and CP separately combining with CV. Users can set different load condition under different operating modes such as setting operating range for load level, Current Slew Rate, input voltage and load current. The input voltage range has two levels - high and low. The load current operating range has two levels - high and low current levels which possess different resolution to meet test requirements of different power product specifications.

Constance Current
CC Mode (Constance Current)
Under constant current mode, electronic load will sink the amount of current users has set. Different current settings via CC mode allow users to test the voltage changes of DC power supply which is called load regulation rate test.

Constance Voltage
CV Mode (Constance Voltage)
Under constant voltage mode, electronic load will sink sufficient current to regulate the voltage source to the set value. This mode allows users not only to test current limit function of power supply, but also to simulate battery operation in testing battery chargers.

Constance Resistance
CR Mode (Constance Resistance)
Under constant resistance mode, electronic load will sink load current, which is linearly direct proportion to input voltage. This mode can be utilized in testing voltage or the activation and current limit of power supply.

Constance Power
CP Mode (Constance Power)
Under constant power mode, electronic load will sink load current, which is indirect proportion to input voltage to reach preset constant power requirement. Hence, the changes of input voltage will have indirect proportion effect on current sinking so as to reach constant power control.

CC +CV Mode CR +CV Mode CP +CV Mode
+CV Mode (Combine with Constance Voltage)
+CV mode can be selected under CC, CR or CP mode. When +CV mode function is turned on and electronic load sinks more current than the maximum current of power supply under test, electronic load will automatically switch to CV mode. It is because that the current sunk is the maximum current of power device. Therefore, power supply will switch to CC mode and PEL-3000E will switch to CV mode to limit electronic load from sinking the total current of power supply so as to prevent power supply under test from damaging. Electronic load will cease operation once the voltage of DUT is lower than the set voltage under +CV mode.

BATT Test Automation
The built-in BATT Test Automation of PEL-3000E provides battery discharge applications with more flexible discharge stop time setting as well as rise and fall Slew Rate for discharge current settings. Under CP, CC or CR mode, the conditions for stop discharge can be set respectively.

BATT Test Automation
BATT Test Automation