ITECH IT7900 Series | Regenerative Grid Simulator
- ✓ Power: up to 165 kVA
- ✓ Voltage: 350 V
- ✓ Current: up to 990 A
Regenerative High-Voltage Grid Simulator for Grid Disturbances, PHiL Applications, and Grid-Connected DUTs
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 Grid 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 Series 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.
Find the Right High-Voltage Test Solution Now
If you want to test grid-connected DUTs under defined voltage, frequency, and disturbance conditions, we will support you in selecting the right configuration of the IT7900 Series. Together, we clarify the voltage level, power requirement, parallel operation, and integration into your test system.
Variants
Specifications
| Specification | Value |
|---|---|
| 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
| Manufacturer number | Name |
|---|---|
| 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
| Scope of delivery |
|---|
| IT7900 Series unit(s) |
| Power cord |
| Factory test report |
| USB cable |
| Operating manual |
Applications
| Application examples |
|---|
| 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
Available documents (Subject to change)
Supplier
ITECH is one of the world's largest manufacturers of AC and DC power supplies. The group's diversified product portfolio includes battery testing and power supply test systems. The company's focus is on a competitive price-performance ratio.