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AEL-8321 Programmable Electronic Load

Programmable Electronic Load. Input voltage: 0…80V. Input current: 0…40A. Input power: 0…400W. RS-232 interface. 4 basic functions: CC, CV, CR, and CP; and 8 basic test modes: CCL, CCH, CV, CRL, CRM, CRH, CPV, CPC. Supports SCPI. Weight: 5.8kg / 12.8lb

AKTAKOM AEL-8321 provides an adaptable, and functional asset wherever power sources need to be tested. These units are designed to provide high reliability, great performance, and ease of operation with multiple functionality.


  • 4 basic functions: CC, CV, CR, and CP; and 8 basic test modes: CCL, CCH, CV, CRL, CRM, CRH, CPV, CPC
  • High-speedsequence, high-speed transient, short-circuit, battery discharge and other auxiliary functions
  • Minimum operating voltage is less than 0.6V at the load's full rated current
  • Optional zero-voltage test accessories are available
  • Programmable current slew rate
  • Perfect protection assures high reliability in the most complicated of test environments
  • Multiple groups of parameters and lists can be saved and recalled
  • Ruggedized structure, exquisite user-friendly design and convenient operation
  • Supports SCPI (Standard Commands for Programmable Instrumentation) and Labview, and provides necessary PC software


Input Ratings
Current 0…40A
Voltage 0…80V
Power 400W at 40°C
Input Characteristics
Minimum Operation Voltage 0.6V

Mode Range Resolution Accuracy
Constant Current Mode 0…4A 0.1mA 0.1%+5mA
0…40A 1mA 0.1%+10mA
Constant Voltage Mode 0…80V 1mV 0.1%+10mV
Constant Resistance Mode 0.02…2Ω 0.1mΩ 0.5%+12mΩ (I›4A)
2…200Ω 8.6μ/Ω 0.3%+1.25m/Ω (V›8V)
20…2000Ω 0.96μ/Ω 0.3%+0.625m/Ω (V›8V)
Constant Power Mode 0…400W 1mW (P‹100W)
10mW (P≥100W)
Current Measurement 0…4A 0.1mA 0.05%+4mA
0…40A 1mA 0.05%+8mA
Voltage Measurement 0…80V 1mV 0.1%+8mV

Power Measurement

1mW (P‹100W) 0.1%+600mW
10mW (P≥100W)

Current Slew Rates
CCH 1mA/μs…4A/μs 1mA/μs
3% + 10μs
CCL 100μA/μs~400mA/μs

Transient Operation
Transient Mode Continuous, Pulse, Toggled
Frequency Range 0.38Hz…50kHz
High / Low Time 0…655.35ms
Resolution 10μs
Accuracy 0.2%+10μs
Rising / Falling Time 10μs…655.35ms
Resolution 10μs
Accuracy 0.2%+10μs
List Characteristics
Step Time 10μs…100000s
Resolution 10μs
Accuracy 0.2%+10us
Number of Steps 1…50
Cycle 1…65535
Store Capacity 7 lists
Expanded Functions Chain
Battery Discharge
Discharge Time 1s…100h
Resolution 1s
Accuracy 0.2%+1s
Battery Capacity 1mAh…4000Ah
Resolution 1mAh
Accuracy 0.3%+0.01Ah
Short Circuit
CCL Mode 4.4A
CCH Mode 44A
CV Mode 0V
CRL Mode 0.018Ω
CRM Mode 1.8Ω
CRH Mode 18Ω
CPV Mode 420W
CPC Mode 0W
Maximum Slew Rate
Current 4A/μs
Voltage 0.6V/μs
Programmable Open Circuit ≥20kΩ
Trigger Input
Trigger Level TTL falling edge
Trigger Pulse Width ≥10μs
Maximum Input Levels
Current 44A
Voltage 84V
Protection Features OV, OC, OP, OT, RV
Reverse Current Capacity
Input OFF 30A
Input ON 50A
Ripple and Noise
Current (rms/p-p) 3mA/30mA
Voltage (rms) 5mV
Environmental Conditions
Temperature 0~50°C
Relative Humidity ≤85%

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