GW Instek AEL-5002-350-18.75 - 350V, 18.75A, 1875W AC/DC Electronic Load
GW Instek launches 20 models of the AEL-5000 series AC/DC electronic loads depending on the power range. The power range of a single unit is from 1875W to 22500W, and up to 8 units can be connected in parallel. The maximum power of single-phase parallel connection can reach 180kW, and the total power of 3-phase can reach 540kW, which are suitable for UPS, Inverter/Breaker, AC Power Source, Battery, Fuse/Breaker, DC Power Source and other applications.
The AEL-5000 series has built-in precision measurement circuits such as 16-bit A/D and DSP to provide accurate measurement items, which include voltage root mean square value (Vrms), current root mean square value (Arms), and watt value (Watt), volt-ampere (VA), crest factor (CF), power factor (PF), total harmonic distortion (THD), voltage total harmonic distortion (VTHD), current total harmonic distortion (ITHD) , peak current (Ipeak), maximum current (Amax), minimum current (Amin), maximum voltage (Vmax), minimum voltage (Vmin), time measurement. In addition, built-in test modes include UPS Efficiency, PV Inverter Efficiency, UPS Back-up time, Battery Discharge time, UPS transfer time, Fuse/Breaker Trip/Non-Trip, short circuit simulation, OCP, OPP and other test modes.
The AEL-5000 series has the Turbo mode (ON or OFF can be selected) design, which can increase the current and power of the electronic load by 2 times in one second. For test applications that require transient high power and large current such as transient overload test of protective components or short circuit of Fuse/Breaker and AC power supply, OCP and OPP tests etc.. The Turbo mode provides the most economical solution.
The AEL-5000 series also supports the Load On startup function (pre-set Load On). When the inverter or uninterruptible power supply is turned on, the series directly loads the set load current to verify that whether startup of the inverter or uninterrupted power supply connecting to the electrical appliance is stable. At the same time, the Load On start function can also set positive half cycle or negative half load to verify whether the output voltage of the inverter or uninterruptible power supply remains stable when the actual electrical appliance only has a positive half cycle or negative half cycle load current. Control load angle and unload angle can also be set (range 0~359 degrees) to verify the stability of the transient response of the inverter or uninterruptible power supply when the appliance is plugged in and unplugged. In addition, the series also supports SCR/TRIAC current phase modulation waveform, 90 degree Trailing Edge and Leading Edge settings.
For the application of the adjustable bandwidth (BW) function, when the bandwidth of the DUT does not match the bandwidth of the AEL-5000 series, there will be oscillations. Users can reduce the BW setting value accordingly to meet the response speed of the DUT. Inrush Current verifies whether the transient response of the inverter output voltage is stable when the electrical appliance is turned on (Inrush Current) and when the electrical appliance is suddenly connected (Surge Current).
The entire series of AEL-5000 provides over-voltage warning, over-current, over-power, and over-temperature protection. Analog Input terminal can control constant current, constant power and other working modes through external voltage. Vmonitor/Imonitor terminal is used to connect external voltage/current monitoring device. In addition, a variety of optional control interfaces are provided such as GPIB, RS-232, USB, and LAN to meet the needs of system integration.
Power Curve
Complete AC and DC Load Modes
AC Load Mode
Constant Curent Mode
Linear Constant Current Mode
Constant Resistance Mode
Constant Voltage Mode
Constant Power Mode
Rectifier Load Mode
CC Mode : In the constant current mode of AC Load, can be applied to sine wave voltage source, providing CF, PF test of linear load.
CC mode, CF = 2
CC mode, CF = 5
CC mode, CF = +0.5
CC mode, CF = -0.5
Linear Constant Current Mode : Can be applied to sine wave and non-sine wave voltage source, as shown in the PWM inverter driver, step voltage source, and off-line UPS sine wave switch to square wave, square wave switch to sine wave.
Linear CC mode, PWM 10A 2.5Hz to 250Hz
Linear CC mode, PWM 10A 2.5Hz
Linear CC mode, PWM 10A 250Hz
Linear CC mode, Step 10A
Linear CC mode, UPS Sine to Square Waveform
Linear CC mode, UPS Sine to Square Waveform
Supported on-load start-up : at first set Load ON to support on-load start-up, inverter or uninterruptible power supply is start-up directly with the set load current, used to verify whether the Inverter is stable when the load is connected during start-up.
CC 10 A on-load boot
CR 10 A on-load boot
CV 10 A on-load boot
Supports the loading and unloading current angle control ; the loading and unloading current angle range of 0-359 degrees can be programmed to verify whether the Inverter output voltage transient response is stable during the actual electrical appliance is connected or turn ON / OFF randomly it can be used to verify the Overshoot / Undershoot response is within the desire range.
45 degrees loading
90 degrees unloading
270 degrees loading
315 degrees unloading
Support positive half-cycle or negative half-cycle loading ; it can be used to verify whether the Inverter output voltage remains stable when the actual appliance has only positive half-cycle or negative half-cycle load current.
positive half-cycle
negative half-cycle
90 degrees TRIAC/SCR current waveforms leading edge
90 degrees current waveforms leading edge
Support the Inrush Current of the inverter at startup and Power Plug-in test when the power supply is turned on to verify the Inrush Current and the sudden connection of the appliance when the power is turned on(Surge Current), to verify if whether the Inverter output voltage transient response is stable, as shown in the figure below.
Inrush current test at boot
Vinput 60V 60Hz
Istart (Inrush Start Current) 75A
Istep 10A
Tstep (Inrush Step Time) 8.333ms
Istop (Inrush Stop Current) 5A
Vinput 60V 60Hz
Istart (Inrush Start Current) 75A
Istep 10A
Tstep (Inrush Step Time) 16.667ms
Istop (Inrush Stop Current) 5A
Vinput 60V 60Hz
S1(Surge current 1) 20A, T1 (Tstep 1) 0.01 Sec.
S2(Surge current 2) 75A, T2 (Tstep 2) 0.03 Sec.
S3(Surge current 3) 20A, T3 (Tstep 3) continue
Istop (Inrush Stop Current) 5A
Vinput 60V 60Hz
S1(Surge current 1) 75A, T1 (Tstep 1) 0.03 Sec.
S2(Surge current 2) 37.5A, T2 (Tstep 2) 0.03 Sec.
S3(Surge current 3) 10A, T3 (Tstep 3) continue
Istop (Inrush Stop Current) 5A
AC Rectified Load Simulation meet the IEC62040-3 and IEC61683 Test Specifications
(IEC62040-3 UPS Efficiency Measurement non-Linear and IEC61683 Resistive Plus Non-Linear) C AC & DC electronic load AC rectified load mode is fully compliance with the IEC test specification requirements for the UPS, IEC 62040-3 UPS Efficiency Measurement Non-Linear and IEC 61683 Resistive Plus Non-Linear, respectively, AEL-5000 Series AC rectifier load mode uses CC + CR load mode and maintain current THD at 80%, to simulate the actual PV Inverter connected to the electronic device.
Rectifier Load Mode
Non-Linear CC mode for UPS test
Non-Linear CC mode for UPS test
The actual V / A waveform
110V, 5A + 22ohm Test Waveform 110V, 10A + 11ohm Test Waveform PV Inverter test Non-Linear CC + Resistive mode (CC+CR)
110V, 5A + 22ohm Test Waveform 110V, 10A + 11ohm Test Waveform PV Inverter test Non-Linear CC + Resistive mode (CC+CR)
AEL-5000 Load Various Test Modes
Current Protection Component Test
Current protection component includes Fuse, Circuit breakers and a new PTC Resettable fuse etc.., its function is when the circuit current exceeds the design of the rated value, that is, if the load exceeds the design of the current capacity, the circuit will be disconnected, in order to avoid overheating, even fire. Fuse is a one-time use of the protection components, Breaker and PTC can be reused.
The current protection components of the protection current value and the protection reaction time has usually a product of the relationship that is, the greater the current through the current protection component, the shorter the reaction time to protect the circuit. This is similar to energy protection components.
Due to this feature, the AEL-5000 Series AC & DC electronic load, in particular for the verification of current protection components, has developed a Fuse Test function to test and verify such protection element with an electronic load of rated current and power. When Turbo mode is set to ON, the test current can be up to double the maximum current within 1 second of test period. Take AEL-5004-350-37.5 as an example, the maximum test current can be doubled to 75A. That is, when the Turbo mode of the AEL-5000 Series is ON, the test current value can reach to 2 units AEL-5000 Series ( normal mode ) within 1.
Fuse
Breaker
PTC
Turbo OFF, Short 100ms 37.5A Test result screen
Turbo OFF, Short 100ms 37.5A Setting
Turbo OFF, Short 100ms 37.5A
The actual test waveform
Turbo ON, Short 100ms 75.0A Test result screen
Turbo ON, Short 100ms 75.0A Setting
Turbo ON, Short 100ms 75.0A The actual test waveform
Turbo OFF, OCP Istep 3.75 A Istop 37.5A Test result screen
Turbo OFF, OCP Istep 3.75 A Istop 37.5A Setting
Turbo OFF, OCP Istep 3.75 A Istop 37.5A
The actual test waveform
Turbo ON, OCP Istep 7.5 A Istop 75A Test result screen
Turbo ON, OCP Istep 7.5 A Istop 75.0A Setting
Turbo ON, OCP Istep 7.5 A Istop 75.0A The actual test waveform
Basically, Fuse test has Trip (Blown) and Non-Trip (no Blown) 2 types. Fuse Test setting parameters include test current (Istart), test time (Time), test REPEAT Time etc.. In the Trip fuse test, it is used to test when there is too large abnormal current the Fuse or Bleaker must be able to provide the protection of the circuit break, that means current protection components need the fuse action, therefore the test current needs to be larger than the fuse current rating.
When the AEL-5000 Series AC & DC electronic load detects a voltage lower than 1.0V, the LCD displays the number of Repeat Cycle and Current Protection Fusing Time XXXX.X sec.
In the Non-Trip (no Blown) test, the current protection component is required to achieve non-blow action, so the test current needs to be lower than the fuse current rating that is used to verify the fuse must not blow during normal current range. When the AEL-5000 Series AC & DC electronic load is not blown after the test time (Pulse Time) and the repeated Repeat number, the LCD displays the information of the Repeat number.
Turbo:OFF, Fuse mode Test result screen
Setting: Turbo:OFF, Fuse ON CC pulse 37.5A, 2S, Test 3 cycles
Turbo : OFF, Fuse ON, CC pulse 37.5A, 2S, Test 3 cycles the actual test waveform/h3>
Turbo ON, Fuse mode Test result screen
Setting: Turbo:ON, Fuse ON CC pulse 75.0A, 1S, Test 3 cycles
Turbo : ON, Fuse ON, CC pulse 75A, 1S, Test 3 cycles the actual test waveform
Battery Test Function
AEL-5000 Series AC & DC electronic load has built-in new TYPE1 ~ TYPE3 battery discharge test, you can select the desired battery test mode, the test results can be directly displayed on the LCD display for battery AH capacity, the voltage value after discharge and the cumulative discharge time.
Constant Current
CC + UVP Battery discharge mode Type 1
Constant Power
CP + UVP Battery discharge mode Type 2
Constant Current
Programmed battery discharge time Type 3
Parallel and Three-Phase Control
The AEL-5000 Series AC & DC load provides multiple units in parallel, three-phase applications that allows users to test applications with greater power or three-phase AC power, this is more flexibility to use the AEL- 5000 Series AC & DC Electronic Load for control. In parallel / three-phase operation, the user operates the unit as the operation of a single machine, as long as the Master can be operated, Slave1 and Slave2 will automatically sink the load and measurement. Parallel and three-phase connection as shown below.
Maximum power of single-phase can up to 180KW, 3-phase total power up to 540KW 3-phase △ or Y Connection parallel connection
Panel Instructions
- LCD Multi-function display
Four meters can display the voltage value at the same time the Voltage(Vrms, Vpeak, Vmax., Vmin), Current (Irms, Ipeak, Imax., Imin.), Watt, Voltampere(VA), Frequency, Crest Factor, Power Factor, Total Harmonic Distortion of Voltag(VTHD), Voltage Harmonic(VH), Total Harmonic Distortion of Current(ITHD), Current Harmonic(IH)
- Meter switch button
V / A / W keys can set the display Rms / Peak / Max / Min,Meter key can select PF / CF / FREQ,switchable display WATT / VA / VAR keys,THD key choose to display THD
- Operate function keys
Mode, Preset ON / OFF, Load ON / OFF, Sense ON / OFF, Level A / B, Config, Limit, Recall, Store, SEQ, Local, System operate function keys
- Waveform library keys
Can be quickly set CF √2 / 2 / 2.5 / 3 / 3.5,+/- PF0.6 / 0.7 / 0.8 / 0.9 / 1.0, FREQ Auto / 50Hz/ 60Hz / 400Hz.
- Test function keys
Can select Short / OPP / OCP /Non-L / NL-CR /Fuse / Batt (Battery Discharge) / Trans (UPS transfer time) test functions.
- Numeric keypad
- Knob setting
- Switch
- Cursor and button setting
- AC power input connector
- Vmonitor, Imonitor, Analog input, SYNC input Input terminal
- Vload, Vsense Input terminal
- Master-slave control connector
Master : Connect the top or bottom to the next unit Slave : The top connects to the previous unit and the bottom connects to the next unit
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Communication interface (GPIB, RS-232, USB, LAN)
- 4 digit V / A/W Meter,display the Voltage (Vrms, Vpeak, Vmax., Vmin)、Current (Irms, Ipeak, Imax., Imin.)、 Watt, Voltampere (VA)、Frequency、Crest Factor、Power Factor、Total Harmonic Distortion of Voltage (VTHD), Voltage Harmonic (VH)、Total Harmonic Distortion of Current (ITHD), Current Harmonic (IH)
- CC, Linear CC, CR, CV, CP and AC Rectifier Load mode
- Crest factor range : 1.414~5.0
- Power factor (PF) range : 0~1 lead or (-1~0) lag
- Built-in function test modes include UPS Efficiency, PV Inverter Efficiency, UPS Back-up time, Battery Discharge time, UPS transfer time, Fuse/Breaker Trip/Non-Trip, Short circuit , OCP, OPP test modes
- Turbo mode is able to increase to 2 times the current and power of electronic load in a short period which is the most suitable for Fuse / Breaker test and short circuit, OCP, OPP test of AC power supply
- Time measurement can be applied to batteries, UPS, fuses and circuit breakers and other tests
- Three units parallel up to 90KW and three-phase △ or Y load connection can be synchronized control by one master unit
- Support on-load boot; at first set Load ON to support on-load boot, inverter or uninterruptible power supply is turned on directly with the set load current, used to verify whether the starter is stable when the Inverter is connected.
- Supports the loading and unloading angle control; the loading and unloading angle control, the full range of 0-359 degrees can be set to verify whether the Inverter output voltage transient response is stable when the actual electrical plugging and unplugging, and whether Overshoot/Undershoot is within the allowable range. ● Support positive half-cycle or negative half-cycle loading; used to verify whether the Inverter output voltage remains stable when the actual appliance has only positive half-cycle or negative half-cycle load current.
- Supports SCR/TRIAC current phase modulation waveforms, 90 degree Trailing edge and Leading Edge.
- Supports the Inrush Current of the inverter at startup and the Surge Current test when the load is suddenly plugged in (Hot Plug-in) during testing.
- Frequency Range : DC, 40~440Hz
- Voltage and current monitoring
- Can be controlled by external voltage for CC, Linear CC, CR, CV, CP operating modes
- Protection against V, I, W, and℃
- Optional interface:GPIB, RS232, USB, LAN
- The most complete measurement capabilities
AEL-5000 Series AC & DC electronic load built-in 16-bit A/D and DSP precision measurement circuit, provides accurate measurements, measurement items have Vrms, Arms, Watt, VA, CF, PF, THD, VTHD, ITHD, Ipeak, Amax, Amin, Vmax, and Vmin In addition to these measurement functions, it also provides time measurement,products such as UPS, fuses and circuit breakers etc. trip or blow time and transfer time for Off-line UPS.
General
Power (W) | 1875W |
Current (Ampere) | 18.75Arms / 56.25Apeak |
Voltage (Volt) | 50~350Vrms / 500Vdc |
Frequency Range | DC,40~440Hz(CC,CP Mode) , DC~440Hz(LIN,CR,CV Mode) |
Protections
Over Power Protection | ≒ 1968.75Wrms or Programmable |
Over Current Protection | ≒ 19.687 Arms or Programmable |
Over Voltage Protection | ≒ 367.5 Vrms / 525Vdc |
Over Temp. Protection | Yes |
Operation Mode
Constant Current Mode for Sine-Wave |
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Linear Constant Current Mode for Sine-Wave, Square-Wave or Quasi-Square Wave, PWM Wave |
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Constant Resistance Mode |
*1 ms (millisiemens) is the unit of conductance(G), one siemens equal to 1/Ω | ||||||
Constant Voltage Mode |
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Constant Power Mode |
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Crest Factor (CC & CP Mode Only) |
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Power Factor (CC & CP Mode Only) |
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Test Mode
UPS Efficient Measurement (Non-Linear Mode) |
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Measuring Efficiency for PV (Resistive + Non-Linear Mode) |
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UPS Back-Up function(CC,LIN,CR,CP) |
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Battery Discharge Function(CC,LIN,CR,CP) |
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UPS Transfer Time |
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Fuse Test Mode |
*3 Turbo mode for up to 2X Current rating & Power rating support Fuse, Short/OCP/OPP test function | ||||||||||||||||||||||||
Short/OPP/OCP Test Function |
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Programmable Inrush Current Simulation: Istart - Istop / Tsep |
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Programmable Surge Current Simulation: S1/T1 - S2/T2 - S3/T3 |
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Measurements
Voltage Readback V Meter |
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Current Readback A Meter |
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Watt Readback W Meter |
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Power Factor Meter |
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Frequency Meter (V) |
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Other Parameter METER | VA, VAR, CF_I, Ipeak, Imax., Imin. Vmax., Vmin., IHD, VHD, ITHD, VTHD |
Others
Start up loading | Yes , Power on loading during Inverter / UPS start up |
Load ON / OFF Angle | 0 ~ 359 degree can be programmed for the angle of load ON and load OFF loading |
Half cycle and SCR/TRIAC loading | Postive or Negative half cycle, 90 ̊ Trailing edge or Leading edge current waveform can be programmed |
Master/Slave (3 phase or Parallel) | Yes, 1 master and upto 7 slave units |
External programming input(OPTION) | F.S / 10Vdc, Resulotion 0.1V |
External SYNC input | TTL |
Vmonitor (Isolated) | ±500V / ±10V |
Imonitor (Isolated) | ±56.25Apk / ±10Vpk |
Interface (OPTION) | GPIB; RS-232; LAN; USB |
MAX. Power consumption | 150VA |
Operation Temperature *2 | 0 ~ 40 °C |
Current of input impedance(mA) @ 50/60Hz | ~V*0.3 ; ~V*2.2 |
Dimension( H x W x D ) | 177 x 440 x 558 mm |
Weight | 21.5Kg |
*2 Operating temperature range is 0~40°C, all specification apply for 25°C±5°C, Except as noted
* All specifications apply for 50/60Hz.
* All specifications subject to change without notice.
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