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Regenerative High-Voltage Grid Simulator for Grid Disturbances, PHiL Applications, and Grid-Connected DUTs

ITECH IT7900 | Grid Simulator: When Testing Requires More Than a Pure AC Supply

As soon as voltage, frequency, and defined grid disturbances must be reproduced realistically and repeatably, a conventional AC source alone is no longer sufficient. This is exactly the type of test task the IT7900 Series from ITECH is designed for.
It operates as a regenerative high-voltage grid simulator and as a 4-quadrant power amplifier. This allows PCS, energy storage systems, microgrids, BOBC and V2X applications, as well as Power Hardware in the Loop (PHiL), to be tested under realistic grid conditions.
With up to 700 V (L-N), optionally 1050 V (L-N), and power expansion up to 900 kVA in parallel operation, the series also covers high-voltage and high-power test applications. The programmable RLC function additionally supports testing in accordance with IEEE 1547 and UL 1741.

When Conditions Must Be Simulated Precisely

Voltage dips, phase jumps, frequency changes, and harmonic injection must be generated reproducibly in the test field. For this purpose, the IT7900 | Grid Simulator offers AC and AC+DC operation, programmable output impedance, LIST and SWEEP functions, as well as editable waveforms.
This is complemented by measurement functions for voltage and current harmonics up to the 50th order. A touchscreen, AC power meter, and integrated digital oscilloscope make voltage, current, and signal waveforms directly visible on the unit. Data and waveforms can be imported and exported via the front USB interface.

For Inverters, Storage Systems, AC Charging Technology, and More

The IT7900 Series is suitable for testing inverters, energy storage systems, AC charging technology, transformers, UPS systems, and AC motors. In these applications in particular, it is critical that DUTs operate reliably under defined voltage and frequency conditions and respond to grid changes in a controlled manner. Feeding absorbed energy back into the grid during testing reduces cooling effort and lowers energy costs at the same time, especially in long test sequences and at higher power levels.

Alternative Products

If you also need a load, we recommend the High Performance Regenerative Grid Simulator ITECH IT7900P. For higher power ratings starting at 21 kVA, the High Performance Regenerative Grid Simulator ITECH IT7900EP is the most cost-effective choice.

Related Product Categories

Simulators | Power Supplies / Sources | Bidirectional Power Supply  | Electronic Loads

Find the Right High-Voltage Test Solution now: ITECH IT7900

If you want to test grid-connected DUTs under defined voltage, frequency and disturbance conditions, we will help you select the right IT7900 series configuration. Together, we clarify voltage level, power requirements, parallel operation and integration into your test stand.

Variants

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Specifications

System Function four-quadrant grid simulator; power amplifier for PHiL applications
Power 2 kVA to 165 kVA
Voltage 350 V L-N
Current up to 990 A
Parallel Operation master/slave operation up to 960 kVA
Output Modes
  • AC
  • DC
  • AC+DC
  • DC+AC
Frequency Range 16 Hz to 150 Hz
Operating Modes
  • CV
  • current limit
  • power limit
Energy Recovery regenerative; grid feedback capable
Standard Waveforms
  • sine
  • triangle
  • sawtooth
  • square
  • trapezoidal
  • clipped
Waveform Synthesis harmonic waveforms; interharmonic waveforms
Phase Angle 0° to 360°
Compliance Tests
  • LVRT
  • phase jump
  • frequency variation
  • harmonic injection
  • IEC 61000-4-13
Additional Function islanding/anti-islanding test mode; adjustable RLC network
Harmonic Measurement voltage up to the 50th harmonic; current up to the 50th harmonic
Voltage Measurement Accuracy up to 0.1% + 0.1% FS
Current Measurement Accuracy up to 0.1% + 0.2% FS
Isolation Function Relay-CTRL function; electrical isolation between grid simulator and DUT
Integrated Interfaces
  • USB
  • CAN
  • LAN, LXI-compliant
  • digital I/O
Optional Interfaces
  • GPIB
  • analog
  • RS232
Operation and Display
  • touchscreen
  • 1-/3-phase AC power meter
  • scope function
Data and Waveform Management import via front USB; export via front USB
Power Density up to 6 kVA in 1U; up to 15 kVA in 3U

Options & Accessories

IT-E176 GPIB interface card 
IT-E177 RS232 and analog interface card 
IT-E168 Fiber optic set 
IT-E169 Fiber optic set for paralleling multiple cabinets 
IT-E30312 Test cable, 30 A / 1.2 m with fork terminal lug 
IT-E30615 Test cable, 60 A / 1.5 m with ring terminal lug 
IT-E31220 Test cable, 120 A / 2 m with ring terminal lug 
IT-E32410 Test cable, 240 A / 2 m with ring terminal lug 
IT-E33620 Test cable, 360 A / 2 m with ring terminal lug

Scope of Delivery

IT7900 Series unit(s)
Power cord
Factory test report
USB cable
Operating manual

Applications

Grid compliance tests
Frequency variation test (SWEEP)
Custom waveform
Voltage disturbance test (Surge & Sag - overvoltage or undervoltage events)
Anti-islanding test
Simulation of various grid parameters
LVRT test (Low Voltage Ride Through), simulation and analysis of low-voltage conditions and voltage dips
UPS system testing
AC power supply
and more

Videos

Links & Downloads

Supplier

Power Testing Solutions from ITECH

Control and Measure Voltage, Current and Energy Flow

ITECH develops hardware and software for electrical power testing. The product portfolio includes programmable DC and AC power supplies, electronic loads, bidirectional power supplies, grid simulators, source measure units, power meters, battery testers and automatic test systems.

More Than 1,200 In-House Developed Models

ITECH develops both the instruments and the associated software in-house. The portfolio has grown to more than 1,200 models across over 60 product series and more than 20 standardized test systems.
Customers in more than 70 countries trust and use ITECH products.

Test Equipment for Electrified Products

ITECH instruments are used to test battery cells, modules and packs, charging stations, on-board chargers, PV inverters, energy storage systems, power supplies and power semiconductors.
The main focus is on test and measurement applications in e-mobility, renewable energy, automotive and industrial electronics, medical technology, semiconductor development, IoT, research and education.

Select ITECH Products by Test Application

In the LXinstruments Shop, you will find ITECH instruments for:

  • Charging, discharging and simulation tests on batteries
  • Testing power supplies and DC/DC converters
  • Testing charging stations and on-board chargers
  • Grid and PV simulation
  • Measurements on power semiconductors and electronic assemblies
  • and much more …

Looking for the Right ITECH Instrument? Talk to Us.

Email: sales@lxinstruments.com
Tel.: +49 (0) 7032 / 895 93-3

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