The EL 22.5 AC/DC SiC-RS + IT30RS combines the proven power and control technology of the Cinergia rack series with an integrated isolation transformer for maximum electrical safety and precise measurement conditions. The system works fully bidirectionally - as a regenerative AC load and regenerative DC source/sink - and efficiently feeds the energy back into the grid. Thanks to SiC semiconductors, maximum efficiency, fast dynamics and a compact design are achieved, ideal for laboratory and test bench applications where galvanic isolation is required.
Typical applications
- Electromobility: AC/DC charging infrastructure, OBC and V2G/V2X tests with isolated mains isolation
- Research & development: Safe measurements for floating setups or sensitive sensor systems
- Battery & energy storage technology: Charge/discharge tests and battery emulation with safe isolation
- Power-Hardware-in-the-Loop (P-HiL): Safe power feedback in hardware tests with mains isolation
- Industry & Aerospace: EoL tests, network simulation and quality testing with galvanic decoupling
Operation & integration
The EL22.5 + IT30-RS unit is equipped with an intuitive 7" touch display and allows local control, sequencing, data acquisition and real-time plotting. Thanks to open MODBUS/TCP communication, analog/digital I/Os and master/slave function, the device can be seamlessly integrated into automated test systems. The built-in isolation transformer (IT30RS) ensures complete galvanic isolation between the mains and the device under test - particularly advantageous in laboratory environments where electrical safety and precise measurement conditions have top priority.
Model focus: EL 22.5 AC/DC SiC-RS + IT30-RS
The EL 22.5 + IT30-RS is the compact and versatile model in the series with integrated transformer. It offers all the functions of the standard EL 22.5 version, supplemented by electrical insulation for particularly safe test setups - without sacrificing regenerative capability or functionality.
- Nominal power: 22.5 kVA/kW (AC/DC)
- Nominal current: 44 Arms (AC), ±44 A per DC channel
- Size & Weight: 7U (≈ 715 × 440 × 310 mm), slightly increased weight due to transformer
- Galvanic isolation: integrated isolation transformer (IT30RS) between mains and load/source
- Operating modes: AC-CC/CP/Impedance (CZ) incl. harmonic tests; DC-CV/CC/CP/CR; optional battery and PV emulation
- Feedback: complete energy feedback with high efficiency
- Grid side: 3×400 V~ (option 3×480 V~), PF > 0.98, THDi < 2 % at rated power
Comparison within the series
| Model |
Nominal power (AC/DC) |
AC-current (RMS) |
DC current (per channel) |
Isolation |
Height |
Typical use |
| EL 22.5 AC/DC SiC-RS |
22.5 kVA/kW |
44 Arms |
±44 A |
No - directly grid-connected |
7U |
Laboratory & production test benches without insulation requirements |
| EL 22.5 AC/DC SiC-RS + IT30-RS |
22,5 kVA/kW |
44 Arms |
±44 A |
Yes - integrated isolation transformer |
7U (slightly increased weight) |
Laboratory applications with galvanic isolation and safety requirements |
Conclusion: The EL 22.5 + IT30-RS is the ideal solution for users who require a compact, regenerative AC/DC load with safe galvanic isolation. It combines maximum measurement reliability with energy efficiency and offers complete functional coverage for research, development and production.
Product features of the series:
- Four-quadrant operation: regenerative AC load & regenerative DC source/sink in one device
- SiC technology for fast transients, high efficiency and low volume
- Integrated isolation transformer (IT30-RS) for galvanic isolation between mains and DUT
- Regenerative energy recovery - minimizes energy consumption and heat dissipation
- 19" rack format (7U, depth ~715 mm) - compact, modular and scalable
- Local operation via 7" touch display incl. order; THDi < 2 %
- DC functions: CV/CC/CP/CR; optional battery test & PV emulation
- Multichannel: 3 independent DC channels (unipolar 2Q) or 1 bipolar channel (4Q)
- Voltage ranges: DC up to 800 V (unipolar 2Q) resp. ±380 V (bipolar 4Q)
- Mains side: 3×400 V~ (option 3×480 V~), power factor > 0.98
- Master/slave: parallel connection (AC/DC) or serial DC configuration for power scaling
- Extensive protection functions (overcurrent, overload, short circuit, watchdog, heartbeat, configurable limits)
- Certifications: CE, IEC 61010-1 (safety), EN 61326-1 (EMC), RoHS/REACH
- Quiet operation with controlled forced cooling (< 55 dB @ 1 m)
