East Tester ET5410A+, ET5411A+, ET5420A+

Contents

East Tester ET5410A+ / ET5411A+ / ET5420A+ Programmable DC Electronic Load User Manual

Your guide to operating and maintaining your DC Electronic Load Tester.

1. Product Overview

The ET54XXA+ series programmable DC electronic load offers high resolution and precision with superior performance. Equipped with a 2.8-inch TFT LCD screen, it provides an intuitive interface and comprehensive test functions, making it suitable for various applications in product testing and research.

East Tester ET5410A+ DC Electronic Load Tester
Figure 1: East Tester ET5410A+ Programmable DC Electronic Load. This model supports 150V, 40A, and 400W. Other models in the series include ET5411A+ (500V, 15A) and ET5420A+ (150V, 20A*2).

Key Features:

  • User-friendly Design: 2.8-inch TFT LCD screen with rich display contents, simple operation, and visual interface.
  • High-performance Load: Supports CC, CV, CR, CP, CC+CV, CR+CV measurement modes, professional battery test, LED test, dynamic test, scan test, list test, short circuit test, and internal resistance test.
  • Multiple Safety Protection: Overcurrent, overvoltage, overpower, over-temperature protection, and input polarity reverse protection.
  • Intelligent Fan Speed Control: Effectively reduces fan noise during operation.
  • Data Storage: Power-off retention data storage function.
  • Remote Operation: Via standard USB, optional RS-232 or 485 interfaces.

2. Setup

Before operating the device, ensure it is placed on a stable, flat surface with adequate ventilation. Connect the power cord and any necessary test leads securely.

2.1 Front Panel Layout (ET5420A+ Dual Channel)

Front panel layout of ET5420A+ with labeled controls
Figure 2: Front Panel of ET5420A+ Dual Channel. Key components include the LCD screen, CV/CC mode keys, adjustment knob, power button, channel switch key, trigger key, cooling port, positive/negative terminal interfaces, current/voltage range switches, arrow keys, enter key, mode setting key, and ON/OFF button.

2.2 Rear Panel Layout

Rear panel layout with power and communication ports
Figure 3: Rear Panel. Shows the power outlet, fuse box, cooling port, and USB Host interface.

2.3 Initial Power-Up

  1. Connect the provided power cord to the power outlet on the rear panel and to a suitable AC power source (100Vac-240Vac, 50/60Hz).
  2. Ensure the load and the source to be tested are connected according to red (positive) and black (negative) terminals.
  3. Turn on the source output first, then turn on the electronic load using the front panel POWER button.

3. Operating Instructions

The device features a 2.8-inch TFT LCD screen and a combination of rotary knob and push buttons for intuitive control.

3.1 Basic Mode Operation

The electronic load supports 6 basic measurement modes: Constant Current (CC), Constant Voltage (CV), Constant Resistance (CR), Constant Power (CP), Constant Current-Constant Voltage (CC+CV), and Constant Resistance-Constant Voltage (CR+CV).

Diagram showing multiple measurement modes
Figure 4: Available Measurement Modes.
  1. Press the MODE button to enter the mode selection interface.
  2. Use the rotary knob or arrow keys (▲▼◀►) to select the desired operation item.
  3. Press ENT to confirm the selected mode and jump to its measurement interface.
  4. To set numeric parameters, press ENT to enter edit mode, then use arrow keys to select digits and adjust values. Press ENT or ESC to exit editing.
  5. Press ON to start or close the selected channel's mode.

3.2 System Settings

Access system settings by pressing the MENU button from any interface.

  • Load Set: Configure load range, limit values, off delay, and voltage compensation.
  • System Set: Set default startup values, language (Chinese/English), button tone, warning tone, and factory reset.
  • Communication Set: Configure local address and baud rate for communication.
  • Qualified Set: Enable/disable qualified testing and set conditions (voltage, current, power limits).
  • System Information: View product model, serial number, hardware, and software versions.

3.3 Specialized Test Functions

  • Battery Test: Used to test battery discharge performance, including capacity and energy.
  • LED Test: Simulates LED lamp characteristics for power supply performance testing.
  • Dynamic Test: Tests dynamic output performance of power supplies by repeatedly switching between two load values (A and B). Modes include Continuous, Pulse, and Trigger.
  • Scan Test: Detects power output continuity within a range, capturing critical parameters like protection current and break-over voltage.
  • List Test: Allows for automatic testing of sources under different load conditions by presetting a sequence of test steps.
  • Short Circuit Test: Simulates a short circuit at the input end to test the source's maximum output.

3.4 Button Lock Function

To prevent accidental operation, long-press the ENT button for 3 seconds to toggle between locked and unlocked states. A lock icon will appear on the title bar when locked.

3.5 Product Demonstration Video

Video 1: A demonstration of the East Tester DC Electronic Load, showcasing its front panel and basic operational features.

4. Specifications

Detailed technical specifications for the ET54XXA+ series models:

Table of specifications for ET5410A+, ET5420A+, ET5411A+
Figure 5: Comprehensive Specifications Table for ET5410A+, ET5420A+, and ET5411A+ models.
Table 1: General Technical Specifications
Parameter ET5410A+ ET5411A+ ET5420A+
Power 400W 400W 400W (200W × 2)
Input Voltage 0-150V 0-500V 0-150V
Input Current 0-40A 0-15A 0-20A × 2
Voltage Read-back Resolution 1mV, 10mV 1mV, 10mV 1mV, 10mV
Current Read-back Resolution 1mA, 10mA 1mA, 10mA 1mA, 10mA
Overvoltage Protection (OV) >155V Cut off >510V Cut off >155V Cut off
Overcurrent Protection (OC) >42A Cut off >16A Cut off >22A Cut off
Overpower Protection (OP) 420W 420W 420W
Over-temperature Protection 85°C 85°C 85°C
Short Circuit Current (CC) >40A >15A >20A
Short Circuit Resistance (CR) <0V, >40mΩ <0V, >40mΩ <0V, >40mΩ
Dimensions (W × H × D) 90mm × 190mm × 300mm (including column length)
Weight Approx. 3.713 kg

5. Maintenance

To ensure the longevity and optimal performance of your East Tester DC Electronic Load, follow these maintenance guidelines:

  • Cleaning: Regularly clean the exterior of the device with a soft, dry cloth. Avoid using abrasive cleaners or solvents that could damage the casing or screen.
  • Ventilation: Ensure that the cooling ports on the device's rear and sides are free from dust and obstructions to allow for proper airflow. Blocked vents can lead to overheating and reduced performance.
  • Storage: When not in use for extended periods, store the device in a dry, dust-free environment.
  • Fuse Replacement: If the device fails to power on, check the fuse located near the power inlet on the rear panel. Replace it with a fuse of the same type and rating if necessary.

6. Troubleshooting

This section provides solutions to common issues you might encounter:

  • Device does not power on:
    • Check if the power cord is securely connected to both the device and the power outlet.
    • Verify that the power outlet is functional.
    • Inspect the fuse on the rear panel and replace if blown.
  • Display is blank or unresponsive:
    • Ensure the device is powered on.
    • If the device is in remote operation mode, switch back to local operation mode by long-pressing the ESC button.
  • Unexpected behavior or errors:
    • Check for any active protection functions (OV, OC, OP, OT, RV) indicated on the display. Address the cause of the protection event.
    • Perform a factory reset via the System Set menu if persistent issues occur (note: this will reset all custom settings).
  • Communication issues (USB/RS232/485):
    • Verify cable connections.
    • Check communication settings (baud rate, address) in the Communication Set menu.

7. Warranty and Support

For technical support, service, or warranty inquiries, please contact Hangzhou Zhongchuang Electron Co., Ltd. using the information below:

Please refer to the official user manual (PDF) for detailed warranty terms and conditions. A PDF version of the user manual is available for download from the seller's product page or directly via: User Manual (PDF).

8. User Tips

  • Proper Connection: Always double-check your positive and negative connections before starting any test to prevent damage to the device or the unit under test.
  • Ventilation: Ensure sufficient space around the device for proper cooling, especially during high-power tests, to maintain optimal performance and prevent overheating.
  • Familiarize with Modes: Take time to explore the different measurement modes (CC, CV, CR, CP, etc.) and specialized test functions (Battery, LED, Dynamic, Scan, List, Short Circuit) to fully leverage the capabilities of your electronic load tester.

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