Array 3724A DC Electronic Load

$1,765.00

Product Tags:
Array 3724A DC Electronic Load
Introduction:

3720A,3721A,3722A and 3723A Electronic Loads provide 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.

Features:
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

 

High Reliability

  • Protective circuitry provides over-current, over-voltage, over-power, over-temperature and reverse polarity protection to ensure the protection of the electronic load;
  • A high-speed, power limiting circuit can limit input power rapidly when it is overloaded, thus there is no need to interrupt testing. Equipment adaptability to complicated operational environments is thereby greatly enhanced.

  • A high-efficiency, intelligent cooling system can effectively reduce system temperature and enhance power density;
  • The input binding posts with their innovative design are especially suitable for large current testing. They are easy to operate, reliable and durable;
  • The specially ruggedized case with its rubber bumpers protects the load thus effectively prolonging the unit’s service life.

     

    Great Performance

    • Circuit improvement greatly enhances the dynamic response of CR mode and widens the application scope of that mode;
    • The innovative CP mode can test voltage sources, current sources, and effectively prevent short-circuits as well when the tested power is insufficient;

    • Minimum operating voltage is less than 0.6V at the load's full rated current. With optional low-voltage testing devices, the maximum current can be achieved even though the input voltage is 0V. This is especially suitable for fuel cell, solar cell and other new energy test applications;
    • By adopting an optimum design of calculation method and high-speed hardware circuitry, the D/A conversion rate can reach 100kHz. The overall smoothness of slope control has been raised, meanwhile, the timing precision and resolution of dynamic test and sequential test have also been improved;
    • The 24 bit A/D and 17 bit D/A converters incorporated, provide this equipment with greatly enhanced setting and measurement resolution.

      Multifunction

      • Equipped with four basic test functions: CC, CV,CR, CP;
      • High-speed transient operation with separate high/low lever time and rising/falling time control;

      • Powerful sequential test function; with a minimum step time of 10us; and a maximum step time of 10000s. Cyclic numbers can be adjusted freely and a sequence can be chained to another sequence to achieve even more complex test procedures;
      • Providingshort-circuit test, battery discharge test and other auxiliary functions;
      • Remote input terminal and external trigger input terminals are provided. The remote measurement can monitor the input signal automatically, and it is not necessary to change wiring or modify settings during operation;
      • 10 groups of setup parameters can be saved, and providing automatic uploading of preset parameters;
      • By supporting SCPI, it is easy to build an ATE (automatic test equipment) system that works with other programmable instruments via optional RS232, USB and GPIB interfaces.

       

      Easy Operation

      • Design optimized for portability and rugged reliability;
      • Logical keypad design and convenient test operation;
      • Easy-to-set test parameters coupled with a powerful sequence editing function;
      • All electronic calibration - therefore no need to dismantle the equipment-chassis;
      • Firmware can be updated online.

       

      Specifications

      (The warm-up time is 30 minutes. Specifications indicate warranted performance in the 25°C ± 5°C region of the total temperature range).

       

      Model

      3720A

      3721A

      3722A
      3723A

      Input Ratings

      Current

      Voltage

      Power*1

      0~30A

      0~80V

      250W at 40oC

      0~40A

      0~80V

      400W at 40oC

      0~20A

      0~200V

      200W at 40oC

      0~30A

      0~200V

      350W at 40oC

      Input Characteristics

      Input Characteristics

      Minimum Operation Voltage
      @Full Scale Current

      0.6V

      0.6V

      1.2V
      1.2V

      Constant Current Mode

      LowRange

      Resolution

      Accuracy

      0~3A

      0.1mA

      0.1℅+5mA

      0~4A

      0.1mA

      0.1℅+5mA

      0~2A

      0.1mA

      0.1℅+5mA

      0~3A

      0.1mA

      0.1℅+5mA

      HighRange

      Resolution

      Accuracy

      0~30A

      1mA

      0.1℅+10mA

      0~40A

      1mA

      0.1℅+10mA

      0~20A

      1mA

      0.1℅+10mA

      0~30A

      1mA

      0.1℅+10mA

      Constant Voltage Mode

      Range

      Resolution

      Accuracy

      0~80V

      1mV

      0.1℅+10mV

      0~80V

      1mV

      0.1℅+10mV

      0~200V

      2mV

      0.1℅+25mV

      0~200V

      2mV

      0.1℅+25mV

      Constant Resistance Mode

      LowRange

      Resolution

      Accuracy

      0.02~2Ω

      0.1mΩ

      0.5℅+12mΩ @I>4A

      0.02~2Ω

      0.1mΩ

      0.5℅+12mΩ @I>4A

      0.0666~6.66Ω

      0.1mΩ

      0.5℅+40mΩ@I>3A

      0.0666~6.66Ω

      0.1mΩ

      0.5℅+40mΩ@I>3A

      MiddleRange

      Resolution

      Accuracy

      2~200Ω

      8.6uS*2

      0.3℅+1.25mS@V>8V

      2~200Ω

      8.6uS

      0.3℅+1.25mS@V>8V

      6.66~666Ω

      2.6uS*2

      0.3℅+375mS@V>20V

      6.6~666Ω

      2.6uS*2

      0.3℅+375mS@V>20V

      HighRange

      Resolution

      Accuracy

      20~2000Ω

      0.96uS

      0.3℅+0.625mS@V>8V

      20~2000Ω

      0.96uS

      0.3℅+0.625mS@V>8V

      66.6~6660Ω

      0.29uS

      0.3℅+188uS@V>20V

      66.6~6660Ω

      0.29uS

      0.3℅+188uS@V>20V

      Constant Power Mode

      Range

      Resolution @P<100W

      @P≥100W

      Accuracy

      0~250W

      1mW

      10mW

      0.2℅+600mW

      0~400W

      1mW

      10mW

      0.2℅+600mW

      0~200W

      1mW

      10mW

      0.2℅+600mW

      0~350W

      1mW

      10mW

      0.2℅+600mW

      Current Measurement

      LowRange

      Resolution

      Accuracy

      0~3A

      0.1mA

      0.05℅+4mA

      0~4A

      0.1mA

      0.05℅+4mA

      0~2A

      0.1mA

      0.05℅+4mA

      0~3A

      0.1mA

      0.05℅+4mA

      HighRange

      Resolution

      Accuracy

      0~30A

      1mA

      0.05℅+8mA

      0~40A

      1mA

      0.05℅+8mA

      0~20A

      1mA

      0.05℅+8mA

      0~30A

      1mA

      0.05℅+8mA

      Voltage Measurement

      Range

      Resolution

      Accuracy

      0~80V

      1mV

      0.1℅+8mV

      0~80V

      1mV

      0.1℅+8mV

      0~200V

      1mV

      0.1℅+50mV

      0~200V

      1mV

      0.1℅+50mV

      Power Measurement

      Range

      Resolution @P<100W

      @P≥100W

      Accuracy

      0~250W

      1mW

      10mW

      0.1℅+600mW

      0~400W

      1mW

      10mW

      0.1℅+600mW

      0~200W

      1mW

      10mW

      0.1℅+600mW

      0~350W

      1mW

      10mW

      0.1℅+600mW

      Current Slew Rates

      RangeCCH

      CCL*3

      1mA/us~3A/us

      100uA/us~300mA/us

      1mA/us~4A/us

      100uA/us~400mA/us

      1mA/us~2A/us

      100uA/us~200mA/us

      1mA/us~3A/us

      100uA/us~300mA/us

      Resolution

      1mA/us

      1mA/us

      1mA/us
      1mA/us

      Accuracy*4

      3% + 10us

      3% + 10us

      3% + 10us
      3% + 10us

      Transient Operation

      Transient Mode

      Continuous, Pulse, Toggled

      Continuous, Pulse, Toggled

      Continuous, Pulse, Toggled
      Continuous, Pulse, Toggled

      FrequencyRange*5

      0.38Hz~50kHz

      0.38Hz~50kHz

      0.38Hz~50kHz

      0.38Hz~50kHz

      High/Low Time

      Resolution

      Accuracy

      0~655.35ms

      10us

      0.2℅+10us

      0~655.35ms

      10us

      0.2℅+10us

      0~655.35ms

      10us

      0.2℅+10us

      0~655.35ms

      10us

      0.2℅+10us

      Rising/Falling Time

      Resolution

      Accuracy

      10us~655.35ms

      10us

      0.2℅+10us

      10us~655.35ms

      10us

      0.2℅+10us

      10us~655.35ms

      10us

      0.2℅+10us

      10us~655.35ms

      10us

      0.2℅+10us

      List Characteristics

      Step Time

      Resolution

      Accuracy

      10us~100000s

      10us

      0.2℅+10us

      10us~100000s

      10us

      0.2℅+10us

      10us~100000s

      10us

      0.2℅+10us

      10us~100000s

      10us

      0.2℅+10us

      Number of Steps

      1~50

      1~50

      1~50

      1~50

      Cycle

      1~65535

      1~65535

      1~65535

      1~65535

      StoreCapacity

      7 lists

      7 lists

      7 lists

      7 lists

      Expanded Functions

      Chain

      Chain

      Chain

      Chain

      Battery Discharge

      Discharge Time

      Resolution

      Accuracy

      1s~100h

      1s

      0.2℅+1s

      1s~100h

      1s

      0.2℅+1s

      1s~100h

      1s

      0.2℅+1s

      1s~100h

      1s

      0.2℅+1s

      BatteryCapacity

      Resolution

      Accuracy

      1mAh~3000Ah

      1mAh

      0.3℅+0.01Ah

      1mAh~4000Ah

      1mAh

      0.3℅+0.01Ah

      1mAh~2000Ah

      1mAh

      0.3℅+0.01Ah

      1mAh~3000Ah

      1mAh

      0.3℅+0.01Ah

      Short Circuit

      CCL Mode

      CCH Mode

      CV Mode

      CRL Mode

      CRM Mode

      CRH Mode

      CPV Mode

      CPC Mode

      3.3A

      33A

      0V

      0.018Ω

      1.8Ω

      18Ω

      270W

      0W

      4.4A

      44A

      0V

      0.018Ω

      1.8Ω

      18Ω

      420W

      0W

      2.2A

      22A

      0V

      0.06Ω

      60Ω

      220W

      0W

      3.3A

      33A

      0V

      0.06Ω

      60Ω

      370W

      0W

      Maximum Slew Rate

       

      Current

      Voltage

      3A/us

      0.6V/us

      4A/us

      0.6V/us

      2A/us

      0.6V/us

      3A/us

      0.6V/us

      Programmable Open Circuit

      ≥20kΩ

      ≥20kΩ

      ≥20kΩ
      ≥20kΩ

      Trigger Input

      Trigger Level

      Trigger Pulse Width

      TTL falling edge

      ≥10us

      TTL falling edge

      ≥10us

      TTL falling edge

      ≥10us

      TTL falling edge

      ≥10us

      Maximum Input Levels

      Current

      Voltage

      33A

      84V

      44A

      84V

      22A

      210V

      33A

      210V

      Protection Features

      OV, OC,OP,OT, RV

      OV, OC,OP,OT, RV

      OV, OC,OP,OT, RV
      OV, OC,OP,OT, RV

      Reverse Current Capacity

      Input OFF

      InputON

      25A

      40A

      30A

      50A

      25A

      35A

      25A

      40A

      Ripple and Noise

      Current(rms/p-p)

      Voltage(rms)

      3mA/30mA

      5mV

      3mA/30mA

      5mV

      3mA/30mA

      12mV

      3mA/30mA

      12mV

      Environmental Conditions

      Temperature

      Relative Humidity

      0~50oC

      ≤85℅

      0~50oC

      ≤85℅

      0~50oC

      ≤85℅

      0~50oC

      ≤85℅

      Remote Interface*6

      RS232, GPIB, USB

      RS232, GPIB, USB

      RS232, GPIB, USB

      RS232, GPIB, USB

      Programming Language

      SCPI

      SCPI

      SCPI

      SCPI

      AC Input

      Voltage

      Frequency

      AC110V or AC220V±15℅

      48 to 63Hz

      AC110V or AC220V±15℅

      48 to 63Hz

      AC110V or AC220V±15℅

      48 to 63Hz

      AC110V or AC220V±15℅

      48 to 63Hz

      Net Weight

      5.8kg

      5.8kg

      5.8kg

      5.8kg

      *1. Maximum continuous power available is derated linearly from 100% of maximum at 40oC, to 75% of maximum at 55 oC.

      *2. Conductance (S) = 1 / Resistance (Ω).

      *3. The set level is 10 times larger than the slew rate in CCL mode.

      *4. The actual transition time is defined as the time required for the input to change from 10% to 90% or from 90% to 10% of the programmed excursion.

      *5. Transient frequency depends on the time for high/low level and rising/falling edge.

      *6. Full remote control via RS232 with optional GPIB and USB.

      Product Images (click to enlarge)
      • Array 3724A DC Electronic Load