High-density Programmable DC Electronic Load

EL series programmable DC electronic loads feature wide current and voltage range; voltage ranges 200V/600V/1200V (for different models), single-unit power up to 27.9kW. Multi-unit connection is supported, via master/slave parallel connection, power can be up to 558kW. High power density, up to 8.1kW for 4U size. Complete protections are equipped.

• Flip front panel and color touch screen, granting accurate display and convenient operation;
• 4 basic working modes: CV/CC/CR/CP; 3 complex working modes: CV CC/CV CR/CR CC;
• Adjustable current slew rate and CV loop speed;
• High-precision voltage and current measurement;
• Automatic OCP/OPP testing;
• Up to 50kHz CC/CR dynamic mode;
• Up to 500kHz voltage and current sampling rate;
• Timing function & battery discharge testing function;
• Load short-circuit simulation function;
• Auto mode, one-key operation for complex testing;
• Dynamic frequency sweep function, to simulate different loads under different situations;
• External analog control interface;
• V-monitor/I-monitor functions;
• Complete protections, including OVP, OCP, OPP, OTP, reverse-alarm, etc.
• Parallel connection with master/slave mode, up to 20 units can be parallel connected at maximum;
• USB interface in standard configuration, supporting data import/export;
• Smart fan control system, which is quiet and eco-friendly;
• Multiple versions for needs of different customers.

Industrial motor;
Server power source;
UPS High voltage UPS;
DC charging pole;
Electronic parts;
Car charger;
Battery pack.

• Flip Front Panel & Color Touch Screen
  EL series programmable DC electronic loads equip flip front panel and large color touch screen (except some models) with graphic user interface, offering convenient operation, real-time and accurate display.
  
• 7 Working Modes
  4 basic working modes: CV/CC/CR/CP and 3 complex working modes: CV CC/CV CR/CR CC, satisfying requirements of various tests.
  CC (Constant Current) Mode:
  1.Load regulation test;
  2.Battery charge/discharge time test & lifespan test;
  3.Fuel cell test;
  4.DC motor load current test;

  CV (Constant Voltage) Mode:
  1.Charing pole test;
  2.Foldback current limit test;
  3.Fuel cell test;
  4.Current source test.

  CR (Constant Resistance) Mode:
  1.Telecom power system soft start test;
  2.LED driver test;
  3.Vehicle climate control system on-load condition simulation.

  CP (Constant Power) Mode:
  1.Constant-power supply test;
  2.Battery capacity & lifespan tests.
  Complex Modes:

  CV CC Mode: Load simulation for battery, charging pole, car charger, etc.

  CV CR Mode: LED characteristic test.

  CR CC Mode: Power source start-up test.
• Dynamic Load Modes, Switching Frequency up to 50kHz
  High-frequency switching between different values under the same operating mode. Dynamic CC, CV, CR, CP modes are supported, up to 50kHz switch frequency for CC/CR dynamic modes. Dynamic load function is suitable for power supply transient testing, battery protection testing, battery pulse charging, etc. 3 dynamic load modes are offered: continuous, pulse and toggle.
  
• Different Versions for Different Needs