SXN72 Series Regenerative Grid Simulator
The SXN72 Series uses digital PWM rectification and independent high-frequency inverter technology to provide four-quadrant operation and bidirectional power flow.
Key Features
Featured Functions
Four-Quadrant, Bidirectional, Regenerative Operation
The SXN72 Series uses digital PWM rectifier control to absorb load-side energy and return it to the grid, reducing the need for dissipative loads in PV and energy-storage inverter testing.
Multiple Output Modes for Versatile Use
The SXN72 Series combines three-phase decoupled control with digital control algorithms to provide balanced three-phase, unbalanced three-phase, and parallel single-phase modes. One instrument therefore replaces multiple conventional AC sources.
Multiple Programmable Modes for Comprehensive Grid-Abnormality Simulation
The SXN72 Series supports programmable staircase, step, ramp, low-voltage (including zero-voltage) ride-through, and high-voltage ride-through profiles, together with superposition of the 2nd through 40th harmonics. These functions simulate grid abnormalities and severe operating conditions for DUT testing.
Model Selection
| Product Name | Regenerative Grid Simulator | ||||
|---|---|---|---|---|---|
| Model | SXN7215-300-23 | SXN7215-300-45 | SXN7245-300-68 | SXN7260-300-91 | SXN7290-300-136 |
| Source/Sink Capacity | 15kVA | 30kVA | 45kVA | 60kVA | 90kVA |
| Basic Functions | |||||
| Output Function | Grid Simulation | ||||
| Regenerative Function | Returns output-side energy to the AC grid | ||||
| Isolation | Built-in isolation transformer | ||||
| Load Power Factor | +1.0 – 1.0 | ||||
| Wiring Configuration | Input: three-phase, four-wire Output: three-phase, four-wire + PE | ||||
| Output Specifications | |||||
| Output Mode | Balanced three-phase, unbalanced three-phase, and parallel single-phase modes | ||||
| Output Voltage | Phase voltage: 0.0-300.0 V Rated voltage: 220.0 V | ||||
| Voltage Setting Accuracy | Accuracy: <=0.4% FS Resolution: 0.1V | ||||
| Balanced and unbalanced three-phase modes | |||||
| Rated Current | 22.7A | 45.4A | 68.1A | 90.9A | 136.3A |
| Parallel Single-Phase Mode | |||||
| Rated Current | 68.1A | 136.3A | 204.5A | 272.7A | 409.0A |
| Output Frequency | 40.00–70.00Hz | ||||
| Frequency Setting Accuracy | Accuracy: <=0.02% Resolution: 0.01Hz | ||||
| Frequency Stability | ≤0.02% | ||||
| Voltage Total Harmonic Distortion (VTHD) | <1% (linear load) | ||||
| Three-Phase Angle | 120 degrees +/-2 degrees (balanced three-phase mode) | ||||
| Crest Factor | 1.41 +/-0.1 (sine-wave mode) | ||||
| Line Regulation | ≤1% | ||||
| Load Regulation | ≤1% | ||||
| Efficiency | >85% | ||||
| Measurement and Display | |||||
| Display | 8-inch color LCD | ||||
| Voltage Measurement Accuracy | Accuracy: 0.2% FS + 0.2% of reading Resolution: 0.1V | ||||
| Frequency Measurement Accuracy | Accuracy: 0.02% Resolution: 0.01Hz | ||||
| Current Measurement Accuracy | Accuracy: 0.3% FS + 0.3% of reading Resolution: 0.1A/1A | ||||
| Power Measurement Accuracy | Accuracy: 0.5% FS + 0.5% of reading Resolution: 0.1kW/0.01kW/0.001kW | ||||
| Operating Functions | |||||
| Staircase Mode | 9,999 steps | ||||
| Step Mode | 100 steps; up to 999,999 cycles | ||||
| Ramp Mode | 100 steps; up to 999,999 cycles | ||||
| Low-Voltage (Including Zero-Voltage) Ride-Through | Simulates standards from multiple countries and regions; minimum response time <=20 ms | ||||
| High-Voltage Ride-Through | Simulates standards from multiple countries and regions; minimum response time <=20 ms | ||||
| Waveform Types | Sine wave or harmonic waveform (2nd-40th harmonic superposition) | ||||
| Real-Time Adjustment | With the output enabled in standard mode, the output voltage and frequency settings can be adjusted using the numeric keys, increment/decrement keys, or rotary knob and applied immediately. | ||||
| Protection Functions | |||||
| Overload Capacity | 105% < output <=110%: output shuts down after 600 s | ||||
| 110% < output <=150%: output shuts down after 60 s | |||||
| 150% < output <=200%: output shuts down after 2 s | |||||
| Output >200%: immediate output shutdown | |||||
| Hardware Protection | Overcurrent, overload, short-circuit, and overtemperature protection; output overvoltage/undervoltage and phase-loss protection; DC-bus overvoltage/undervoltage protection; and automatic output-contactor trip protection | ||||
| Software Protection | AI-Monitor, Black Box, and Auto-Lock keypad protection | ||||
| Remote Interfaces | |||||
| Communication Interface | Standard: RS232 Optional: RS485, LAN | ||||
| Input Specifications | |||||
| Input Phases | Three-phase, four-wire + PE | ||||
| Input Voltage Range | 380V±57V | ||||
| Input Frequency Range | 45–65Hz | ||||
| Input Power Factor | >0.97 (rated input voltage, 50%-100% of rated input current) | ||||
| >0.95 (rated input voltage, 10%-50% of rated input current) | |||||
| Input Current Distortion | <5% (rated conditions) | ||||
| Operating Environment | |||||
| Operating Temperature | 0–40°C | ||||
| Operating Humidity | 20%-90% RH (non-condensing) | ||||
| Dimensions and Weight | |||||
| Dimensions (W x H x D, mm) | 800 x 1800 x 800 | 1200 x 2000 x 1000 | |||
| Weight (kg) | 500 | 570 | 680 | 750 | 900 |
| Note: Transient and flicker functions with 1 ms resolution are available as custom options. | |||||
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