ITECH IT8200 Regenerative AC-DC Electronic Load User Manual

ITECH IT8200 Regenerative AC-DC Electronic Load

Product Information

IT8200 Regenerative AC/DC Electronic Load
The IT8200 Series is a high power density design Regenerative AC/DC Electronic Load. It can reach up to 15kVA in a 3U unit and up to 960kVA after parallel connection. It comes with an LCD touch screen with graphical UI interface that can define different waveforms, arbitrary waveform editing function, and perfect protection function. It is an ideal choice for R&D testing and system construction.

Features

• Rectification function enabled
• Setting range of phase shift is restricted by the peak factor
• Voltage/current harmonic analysis, current harmonic simulation, fundamental wave 60Hz

Applications

• Solar
• Energy storage
• Grid-connected inverter, Hybrid inverter
• PCS, Micro-grid
• EV
• V2G, EVSE, converters
• Power Electronics
• UPS, AC power supply, frequency converter, generator
• Electronic components: Circuit breaker, fuse, connectors, switches

Model Specifications

• Please contact ITECH for high power needs.
• The above specifications are subject to update without
  notice.

Product Usage Instructions

To use the IT8200 Regenerative AC/DC Electronic Load, follow these instructions:

1. Connect the load to the DUT (Device Under Test) based on the application.
2. Turn on the power supply and the electronic load.
3. Use the LCD touchscreen with a graphical UI interface to define different waveforms or use the arbitrary waveform editing function.
4. Use the protection function to ensure the safety of the DUT.
5. After finishing the test, turn off the electronic load and the power supply.

Note: For high power needs, please contact ITECH.

Adopting advanced SiC technology, IT8200 Series is a regenerative programmable AC/DC electronic load. It is power regenerative, which not only saves electricity and cooling costs for you but also good for energy saving and environmental protection. AC load mode supports both rectification and non- rectification, providing CC/CR/CP/CS/CC+CR/CE operating modes. It can simulate multiple circuit topologies under CE mode such as single-phase rectification RLC Circuit and parallel RLC Circuits. IT8200 can be applied to the test of V2G, EVSE, PCS, UPS, inverter, etc.

IT8200 Series adopts a high power density design, and the power can reach 15kVA in a 3U unit. After a parallel connection, the power can be extended to 960kVA at most.Its LCD touchscreen with a graphical UI interface can directly define different waveforms. Combined with an arbitrary waveform editing function and perfect protection function, it is an ideal choice for R&D testing and system construction.

FEATURE

• Adopt advanced SiC technology
• High power density, 15kVA in 3U unit
• Measure up to 16 parameters including Vrms/Arms/Freq/
• CF/PF/UTHD/ITHD/±Vpeak.
• Master/Slave parallel, power up to 960kVA
• High-efficient energy regeneration
• Voltage – 350 VL-N
• Comprehensive working modes selectable: single-phase, three-phase, reversed phase. Rated voltage can be extended to 200% under reversed-phase
• Frequency: 16-500Hz
• Support NORMAL/LIST/SWEEP/Surge&Sag modes
• Built-in various waveforms
• Touch screen, simple UI for easy operation
• Built-in USB/CAN/LAN/Digital IO interface, optional GPIB /Analog&RS232
• DC mode supports nine working modes, including CC, CR, CP, and CV
• AC mode supports CC/CP/CR/CS/CC+CR/CE multiple working modes, CE mode can simulate various circuit topologies such as single-phase rectifier RLC and parallel RLC
• AC mode supports both rectification and non-rectification modes
• Adjustable crest factor: 1.414 ~ 5.0
• Supports phase shift, ranging from -90 º to 90.0 º *1
• The unit power factor1 function allows the current waveform to vary with the voltage waveform and the power factor is as close to 1 as possible
• In three-phase AC mode, two access modes are supported: Y and Δ
• Comprehensive harmonics measurement and analysis, up to 50th. Built-in IEC61000-3-2/3-12 pre-compliance test standard *2
• Support the loading and unloading angle control, the full range of 0-359° can be set
• Various protection functions such as Protect auto clear (UV&FE auto Clear), POVP, POCP, UVP, Software watchdog

1. After the rectification function is enabled, the setting range of phase shift is restricted by the peak factor
2. Voltage/current harmonic analysis, current harmonic simulation, fundamental wave ≤ 60Hz

APPLICATION

• Please contact ITECH for high power needs.
• The above specifications are subject to update without notice.

Regenerative AC/DC electronic load

The IT8200 series are new regenerative AC Electronic Load with 88% energy recovery capability. Whether in AC mode or DC mode, the power generated by the DUT can be fed back to the grid,rather than being dissipated as heat, which protects the environment and save the cost of electricity, HVAC and cooling infrastructure.

Production facility

24hours/day x 7 working days x 52 weeks

Power             Electricity saved

(kW)                (appr.USD/year)

| CO2 emission reduced (appr.ton/year)
---|---
15| 17,428| 124
90| 104,570| 745
165| 191,712| 1,365
960| 1,115,412| 7,943

R &D lab
8hours/day x 5 working days x 52 weeks

The data is based on:

1. approximate electricity price 0.14USD/kWh for industry facility
2. 1kWh power consumption ≈ 0.997 CO2 emission

The extra cost of air conditioning is not included.

High power density

The IT8200 series is available from 3U stand-alone to 15 U/27 U/37 U cabinets and other different compact structure design. It can meet different test requirements of users from 5k~165kVA, and the voltage output can reach 350V. The size of 3U/15 kVA model is only 1/12 of a conventional type of AC power supply, saving a lot in space and cost and providing users with a high-power test program that can be directly placed on the experimental table.

Master/slave parallel, large capacity free combination
The 3U model of IT8200 can be master-slave paralleled to to reach 960kVA output at most. It can improve the output current and power capacity to meet the requirements of higher power testing. IT8200 comes with synchronous On/Off input and output signals, which ensure the synchronization of paralleling and ensures synchronous current sharing of multiple modules. After paralleling, all functions are retained and there’ s no loss of accuracy, making the construction of the power system faster, more flexible, and more economical, either it is a stand-alone test or ATE system.

3U 3~15 kVA

Single-phase, three-phase, reverse-phase

The IT8200 series has single-phase, three-phase, and reverse-phase output modes, which can be selected through the menu. Under reverse mode, the single- phase 350V input voltage can be increased to 700V with the power down to 2/3 of the original. Under the three-phase mode, you can choose a Y-type or a Δ-type connection. The Y-type connection supports the C-phase loss.

CF 1.414-5.0
The crest factor indicates the extreme peaks of the waveform. For applications that require a pure sine wave, it is desirable to have a CF value of the load current waveform of 1.414 or as close as possible. However, in practical applications, the peak shape of the current waveform of the load may become very sharp and its CF is often higher than 1.414. At this time, the starting point of the sine wave starts to shift from 0 degrees to the positive degree. So you need to correct the waveform. The Crest Factor of the IT8200 can be adjusted from 1.414 to 5.0, and it also allows to set the phase shift angle from -90 º~90 º, correct the resulting amplitude, and keep the RMS unchanged. This enables more accurate simulation of field test conditions to ensure the reliability of the unit under test (UUT).

IT8200 Regenerative AC/DC Electronic Load

AC/DC load conditions emulation

IT8200 AC electronic load can enable the ‘Rectified’ function in AC mode, so that the load works in the first and third quadrants to ensure that the voltage and current flow always in the same direction. At this time, full wave, positive half wave, or negative half wave can be freely selected.

Waveform

Oscilloscope function
The IT8200 series has built-in digital oscilloscope functions, which can collect time domain signals of voltage and current, phase relation-ship, and perform waveform triggering, etc. Its sampling rate is as high as 10us, up to 6 oscilloscope curves can be displayed at the same time, and instantaneous analysis can be completed. Further more, with its data recording function, you can observe the output for a long time, and store the obtained data to an external storage device for secondary analysis. A wide variety of test requirement can be met even without a data acquisition instrument or an oscilloscope.

Data record
Thanks to the data record function, the IT8200 series can continuously record data for up to 7 hours at the fastest time interval of 100ms, and provides you with a ‘trend’ graph to check the curve of the entire test process. Up to 6 curves can be displayed simultaneously. In addition, you can also observe the precise data at a certain moment in the trend graph by sliding on the front panel. This function helps to analyze the abnormality of DUT during long-term testing, inflection point under loading, etc. Test data can be exported by a USB for further analysis.

Harmonic analysis
Harmonic analysis functions include both voltage and current harmonic measurement. In the harmonic mode, the voltage and current total harmonic distortion (THD) and the phase difference test of the harmonic to the fundamental wave can be realized. In addition, you can make multiple harmonic measurements. The test results are displayed in a list, histogram or vector diagram, easy to check. In the meantime, IT8200 AC electronic load also has built-in IEC 61000-3-2 / 61000-3-12 regulations, which can be recalled directly for pre-compliance testing.

Built-in multiple waveforms
IT8200 has built-in sine, triangle, square, trapezoidal and clipped-sine wave. These waveforms can be recalled through the menu and displayed on the screen. Furthermore, the complex testing requirement can be met by further editing the relevant parameters.

Harmonic simulation
Harmonic test is one of the important test items for EMC immunity. IT8200 series has built-in 30 THD waveforms for quick recall. Thanks to the high- speed DSP technology, IT8200 series can also customize THD waveform. By setting the amplitude and phase, it can simulate up to 50th order harmonics (fundamental frequency is 50Hz or 60Hz), forming a periodic distortion waveform.

Intuitive software interface

IT8200 series provides free PC software PV8200 with an intuitive GUI. Meanwhile, it allows remote control, even the ATE models without display screen can be programmed, communicated and monitored.

LIST/SWEEP/Surge&Sag

IT8200 series supports NORMAL,LIST and SWEEP mode. Each mode can work with Surge&Sag function. In LIST mode, you can edit multiple steps and any waveform can be selected for each step. One List file can contain maximum 200 steps. Parameters such as frequency, amplitude, running time, and rising slope of each waveform can be edited.

The SWEEP function helps to test the efficiency of the switching power supply in AC mode, grab the voltage and frequency of the maximum power point, and make the setting parameters change step by step.

Surge&Sag works in each mode of NORMAL/LIST/SWEEP. Use trigger or cycle to control the drop of surge and sag, set the starting angle of the drop, and support waveform smoothing, symmetrical and asymmetrical waveform operations. Waveforms can be quickly created to reproduce waveform distortions or transient events such as spikes, dropouts or any other anomalies.

Specification

IT8215-350-90

AC parameter

AC Input

AC mode

| Wiring connection| 3phase 3wire + ground(PE)
Line voltage| RMS| ( 200 ~ 220 V) ±10% *1 ( 380 ~ 480V ) ±10%
Line current| RMS| < 34A
Apparent power| < 17kVA
Frequency| 45 ~ 65Hz
Power factor

Input voltage

| typ| 0.98
Input
VLN| 30 ~ 350V
VLL| 51.96 ~ 606V(3phase)/60 ~ 700V(reverse)
Input frequency| 16 ~ 500Hz

Input current

| RMS| 90A(1phase)/30A(3phase/reverse)
Peak| 270A(1phase)/90A(3phase/reverse)
Crest Factor *2| 5

Input power

| Per Phase| 5kVA
Max. Power| 10kVA(reverse phase)/15kVA(1phase/3phase)
 | CC mode setting
Current range| RMS| 90A(1phase)/30A(3phase/reverse)
Resolution| 0.01A
Accuracy3| <0.1% + 0.2% F.S.(DC,16Hz～150Hz)/<0.2% + 0.3% F.S.(150.1Hz ~ 500Hz 4 )
 | CP mode setting

Range

| Max. Power| 15kW(1phase/3phase)/10kW(reverse phase)
Per Phase| 5kW(3phase)
Resolution| 0.001kW
Accuracy| <0.4% +0.4% F.S.(DC,16Hz～500Hz)
 | CS mode setting

Range

| Max. Power| 15kVA(1phase/3phase)/10kVA(reverse phase)
Per Phase| 5kVA(3phase)
Resolution| 0.001kVA
Accuracy| <0.4% +0.4% F.S.(DC,16Hz～500Hz)
 | CR mode setting
Range| 0.334～388.88Ω(1phase) / 1.002～1166.6Ω (3phase/reverse-phase)

0.001Ω

0电.4%压+设0.4定%F.S.

Circuit Emulation(CE)-Parallel rlc

0.334～388.88Ω(1phase) / 1.002～1166.6Ω(3phase/reverse-phase)

Resolution
Accuracy*5

R Range

L Range| 1 ~ 2000uH(1phase)/3 ~ 2000uH(reverse phase)/3 ~ 2000uH(3phase)
C Range| 0.001 ~ 9900uF(1phase)/0.001 ~ 3300uF(reverse phase)/0.001 ~ 3300uF(3phase)
Rc Range| 0.334～388.88Ω(1phase) / 1.002～1166.6Ω(3phase/reverse-phase)
RL Range| 0.334～388.88Ω(1phase) / 1.002～1166.6Ω(3phase/reverse-phase)
IL Range| 0 ~ 272.7A(1phase)/0 ~ 90.90A(reverse phase)/0 ~ 90.90A(3phase)
Max peak current| 272.7A(1phase)/90.9A(reverse phase)/90.9A(3phase)
 | Circuit Emulation(CE)-Rectifier single phase rlc
R Range| 0.334～388.88Ω(1phase) / 1.002～1166.6Ω(3phase/reverse-phase)
L Range| 0.1 ~ 2000uH(1phase)/0.3 ~ 2000uH(reverse phase)/0.3 ~ 2000uH(3phase)
C Range| 0.001 ~ 9900uF(1phase)/0.001 ~ 3300uF(reverse phase)/0.001 ~ 3300uF(3phase)
RS Range| 0～388.88Ω(1phase) / 0～1166.6Ω(3phase/reverse-phase)
Vcap Range| 0 ~ 499.924V(1phase)/0 ~ 499.924V(reverse phase)/0 ~ 499.924V(3phase)
Vdiode RangeL| 0 ~ 5V(1phase)/0 ~ 5V(reverse phase)/0 ~ 5V(3phase)
Max peak current| 272.7A(1phase)/90.9A(reverse phase)/90.9A(3phase)

1. (200~220) ±10%, models of 12Kw and above output 60% of rated power.
2. Under the input frequency of 50Hz/60Hz, the maximum CF is 5 without exceeding the peak current; under the condition of full current and full power, the maximum CF is 3.
3. For frequency <150Hz, the minimum current for accuracy test is 1%F.S., for frequency>150Hz, the minimum current for accuracy test is 3%F.S.
4. When LoopSpeed is Low, it is more adaptable to the load; when LoopSpeed is Fast, the dynamic response is faster; when the frequency is high, use Fast mode.
5. Test frequency <150Hz, works with this specification.
   The above specifications are subject to update without notice.

AC mode

| Phase angle setting
---|---
Range| -82.8º~+82.8º(Rectified Mode *6)
-90º~+90º
Resolution| 0.01
Accuracy| 1% F.S.
 | CF setting
Range| 1.414 ~ 5.0
Resolution| 0.001

DC mode

| Voltage| 30 ~ 499V
Current| 0 ~ 90A(1phase)
Current rising time| 200μs
 |  | Measure Parameter

Voltage RMS

| Range| 0 ~ 350Vrms
Resolution| 0.01
Accuracy| < 0.1%+0.1% F.S.(DC,16Hz～500Hz)

Current RMS

| Range| 0 ~ 90A
Resolution| 0.01A
Accuracy| < 0.1% + 0.2% F.S.(DC,16Hz～150Hz)/< 0.2% + 0.3% F.S.(150.1Hz ~ 500Hz)

Peak current

| Range| 0 ~ 270A
Resolution| 0.1A
Accuracy| < 0.3% + 0.6% F.S.(16Hz ~ 500Hz)
Input active power| Range| 0 ~ 15kW
Resolution| 0.001kW
Accuracy| < 0.4% +0.4% F.S.
Input reactive power| Range| 0 ~ 15kVAR
Resolution| 0.001kVAR
Accuracy| < 0.4% +0.4% F.S.
Input apparent

power

| Range| 0 ~ 15KVA
Resolution| 0.001KVA
Accuracy| < 0.4% +0.4% F.S.

CF

| Range| 1 ~ 5
Resolution| 0.01

PF

| Range| 0.1 ~ 1
Resolution| 0.01
Accuracy| 1%F.S.
Harmonic| Max.harmonic analysis| up to 50orders(50/60Hz)
 |  | Power regeneration
Regenerative Pmax| 15kVA
Output current THD| < 5%
 | Other
Efficiency| typ| 88%
Protection| OVP, OCP, OPP, OTP, FAN,ECP
Dimension| 483.00mm (W)151.3mm (H)700mm (D) (841.6mm cover and holder included)
Weight| 42kg
Working temperature| 0℃~50℃
Programming response time| 2ms
6. In the rectifier load mode, the setting range of the phase angle is related to CF. The larger the CF, the larger the settable range of the phase angle.
The above specifications are subject to update without notice

ITECH ELECTRONICS

• www.itechate.com.
• [email protected].

References

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