VS-U Series Off-Grid Inverter
VS-U Series Low-Frequency Inverter/Charger 1-12.5 kVA
Parameter | VS-U 1012/24 | VS-U 1312/24 | VS-U 1512/24 | VS-U 2012/24/48 | VS-U 2512/24/48 | VS-U 3024/48 | VS-U 3824/48 | VS-U 5024/48 | VS-U 6324/48 | VS-U 8048 | VS-U 10048 | VS-U 12548
AC (grid) input | Single-phase 230 VAC; single-phase 110 VAC; split-phase 230 V + 115 V (two-live-wire grid)
Input voltage range | 230 V model: 154-264 VAC ±3 V; 110 V model: 77-132 VAC ±3 V
The VS-U series belongs to the off-grid solar inverters range. Review the exact model in the specification table rather than selecting on the series name alone.
Parameter | VS-U 1012/24 | VS-U 1312/24 | VS-U 1512/24 | VS-U 2012/24/48 | VS-U 2512/24/48 | VS-U 3024/48 | VS-U 3824/48 | VS-U 5024/48 | VS-U 6324/48 | VS-U 8048 | VS-U 10048 | VS-U 12548 AC (grid) input | Single-phase 230 VAC; single-phase 110 VAC; split-phase 230 V + 115 V (two-live-wire grid)
Structural Features
Key features of the VS-U platform:
- Parameter | VS-U 1012/24 | VS-U 1312/24 | VS-U 1512/24 | VS-U 2012/24/48 | VS-U 2512/24/48 | VS-U 3024/48 | VS-U 3824/48 | VS-U 5024/48 | VS-U 6324/48 | VS-U 8048 | VS-U 10048 | VS-U 12548
- AC (grid) input | Single-phase 230 VAC; single-phase 110 VAC; split-phase 230 V + 115 V (two-live-wire grid)
- Input voltage range | 230 V model: 154-264 VAC ±3 V; 110 V model: 77-132 VAC ±3 V
- Input frequency | 45-65 Hz
- Rated output power | 800W | 1000W | 1200W | 1600W | 2000W | 2400W | 3000W | 4000W | 5000W | 6400W | 8000W | 10000W
Product Advantages
Parameter | VS-U 1012/24 | VS-U 1312/24 | VS-U 1512/24 | VS-U 2012/24/48 | VS-U 2512/24/48 | VS-U 3024/48 | VS-U 3824/48 | VS-U 5024/48 | VS-U 6324/48 | VS-U 8048 | VS-U 10048 | VS-U 12548
AC (grid) input | Single-phase 230 VAC; single-phase 110 VAC; split-phase 230 V + 115 V (two-live-wire grid)
Input voltage range | 230 V model: 154-264 VAC ±3 V; 110 V model: 77-132 VAC ±3 V
Input frequency | 45-65 Hz
Rated output power | 800W | 1000W | 1200W | 1600W | 2000W | 2400W | 3000W | 4000W | 5000W | 6400W | 8000W | 10000W
For a VS-U quotation, send the exact model, quantity, destination market, electrical requirements and expected operating duty. Identify any branding, packaging or documentation requirements separately so the supplied configuration is clear.
Technical Parameters
| Parameter | VS-U 1012/24 | VS-U 1312/24 | VS-U 1512/24 | VS-U 2012/24/48 | VS-U 2512/24/48 | VS-U 3024/48 | VS-U 3824/48 | VS-U 5024/48 | VS-U 6324/48 | VS-U 8048 | VS-U 10048 | VS-U 12548 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| AC (grid) input | Single-phase 230 VAC; single-phase 110 VAC; split-phase 230 V + 115 V (two-live-wire grid) | |||||||||||
| Input voltage range | 230 V model: 154-264 VAC ±3 V; 110 V model: 77-132 VAC ±3 V | |||||||||||
| Input frequency | 45-65 Hz | |||||||||||
| Rated output power | 800W | 1000W | 1200W | 1600W | 2000W | 2400W | 3000W | 4000W | 5000W | 6400W | 8000W | 10000W |
| Output voltage (utility mode) | 230/120 V single-phase units: output follows input (bypass). 110 V input split-phase units: dual 110 V output follows input, single 220 V output is 2x input. 230 V input split-phase units: dual 115 V output is half of input, single 230 V output follows input. | |||||||||||
| Output frequency (utility mode) | Same as input frequency (bypass) | |||||||||||
| Output voltage (inverter mode) | 230VAC±10%; 115VAC±10% | |||||||||||
| Output frequency (inverter mode) | 50 or 60 Hz ±1% | |||||||||||
| Output waveform (inverter mode) | Sine wave | |||||||||||
| Battery type | External lead-acid, flooded or lithium battery, etc. | |||||||||||
| Battery voltage | 12VDC / 24VDC / 48VDC | |||||||||||
| Battery charge voltage | 14.1VDC / 28.2VDC / 56.4VDC | |||||||||||
| Max. PV array power (MPPT) | 12 V: 800 W; 24 V: 1600 W; 48 V: 3200 W | 24 V: 2700 W; 48 V: 5400 W | 48 V: 2 × 5400 W | |||||||||
| PV input voltage range (MPPT) | 12 V: 15-245; 24 V: 30-245; 48 V: 60-245 VDC | 24 V: 30-245; 48 V: 60-245 VDC | 48 V: 60-245 VDC | |||||||||
| Max. PV array open-circuit voltage (MPPT) | 245VDC | |||||||||||
| Optimal Vmp range (MPPT) | 12 V: 40-245; 24 V: 60-245; 48 V: 100-245 VDC | |||||||||||
| Max. solar charging current (MPPT) | 60A | 100A | 200A | |||||||||
| Max. AC charging current | 30A/20A | 40A/20A | 50A/25A | 70A/30A/20A | 80A/40A/20A | 50A/30A | 60A/30A | 80A/40A | 100A/50A | 70A | 80A | 100A |
| Transfer time | <=10 ms (UPS mode) / <=20 ms (APL mode) | |||||||||||
| Peak load ratio | 3:1 (max.) | |||||||||||
| Transformer | Toroidal transformer | |||||||||||
| Standby power (W) | 12 V: 10 W; 24 V: 15 W; 48 V: 25 W | 24 V: 30 W; 48 V: 55 W | ||||||||||
| Protection (utility mode) | Utility mode: input overcurrent protection via no-fuse breaker (MCB) | |||||||||||
| Protection (inverter mode) | Inverter mode: overload, short-circuit, low-voltage and battery reverse-polarity protection (fuse) | |||||||||||
| Display | Dot-matrix LCD or color segment LCD with LED indicators | |||||||||||
| Display pages | Paging key scrolls AC voltage / frequency, PV voltage / current, output voltage / frequency, battery voltage, load current, etc. | |||||||||||
| LED indicators | LEDs indicate utility, charging, inverting and fault status | |||||||||||
| Audible alarm | Buzzer alarm | |||||||||||
| Operating temperature | -10 to 40 °C | |||||||||||
| Storage temperature | -15 to 45 °C | |||||||||||
| Relative humidity | 5-95% non-condensing | |||||||||||
| Noise level | <45 dB | |||||||||||
| Dimensions L×W×H (mm) | VV chassis: 490×312×125 mm; VL chassis: 465×310×135 mm | 545×400×175 mm | ||||||||||
Use the VS-U electrical limits as the starting point for system design. Confirm the AC supply where applicable, battery voltage, PV string limits and equipment connected to the output. Optional functions must be specified with the order.
Check the battery and charging requirements for the selected VS-U model. Match permitted charge and discharge current, charging profile and any supported BMS protocol. A matching connector or nominal voltage alone does not confirm compatibility. For a battery-free or DC-only product, use only the interfaces listed in its model table.
For a VS-U quotation, send the exact model, quantity, destination market, electrical requirements and expected operating duty. Identify any branding, packaging or documentation requirements separately so the supplied configuration is clear.
The table describes one published model revision. Confirm the current supply configuration before ordering.
Before You Order
Use the VS-U electrical limits as the starting point for system design. Confirm the AC supply where applicable, battery voltage, PV string limits and equipment connected to the output. Optional functions must be specified with the order.
Electrical Match
Check the battery and charging requirements for the selected VS-U model. Match permitted charge and discharge current, charging profile and any supported BMS protocol. A matching connector or nominal voltage alone does not confirm compatibility. For a battery-free or DC-only product, use only the interfaces listed in its model table.
Installation Plan
Install the VS-U product within the temperature, ventilation and enclosure conditions stated in its manual. Specify cable sizes, isolation and protection through a qualified installation design. Product dimensions and clearances should be checked before cabinet or mounting work.
Supply Configuration
VS-U Series — Selection and Application
The VS-U series belongs to the off-grid solar inverters range. Review the exact model in the specification table rather than selecting on the series name alone.
Parameter | VS-U 1012/24 | VS-U 1312/24 | VS-U 1512/24 | VS-U 2012/24/48 | VS-U 2512/24/48 | VS-U 3024/48 | VS-U 3824/48 | VS-U 5024/48 | VS-U 6324/48 | VS-U 8048 | VS-U 10048 | VS-U 12548 AC (grid) input | Single-phase 230 VAC; single-phase 110 VAC; split-phase 230 V + 115 V (two-live-wire grid)
Model selection
For VS-U, first identify the required electrical interface and continuous load.
Parameter | VS-U 1012/24 | VS-U 1312/24 | VS-U 1512/24 | VS-U 2012/24/48 | VS-U 2512/24/48 | VS-U 3024/48 | VS-U 3824/48 | VS-U 5024/48 | VS-U 6324/48 | VS-U 8048 | VS-U 10048 | VS-U 12548 AC (grid) input | Single-phase 230 VAC; single-phase 110 VAC; split-phase 230 V + 115 V (two-live-wire grid)
Operating features
Parameter | VS-U 1012/24 | VS-U 1312/24 | VS-U 1512/24 | VS-U 2012/24/48 | VS-U 2512/24/48 | VS-U 3024/48 | VS-U 3824/48 | VS-U 5024/48 | VS-U 6324/48 | VS-U 8048 | VS-U 10048 | VS-U 12548
AC (grid) input | Single-phase 230 VAC; single-phase 110 VAC; split-phase 230 V + 115 V (two-live-wire grid)
Input voltage range | 230 V model: 154-264 VAC ±3 V; 110 V model: 77-132 VAC ±3 V
Input frequency | 45-65 Hz
Rated output power | 800W | 1000W | 1200W | 1600W | 2000W | 2400W | 3000W | 4000W | 5000W | 6400W | 8000W | 10000W
System integration
Use the VS-U electrical limits as the starting point for system design. Confirm the AC supply where applicable, battery voltage, PV string limits and equipment connected to the output. Optional functions must be specified with the order.
Battery and charging
Check the battery and charging requirements for the selected VS-U model. Match permitted charge and discharge current, charging profile and any supported BMS protocol. A matching connector or nominal voltage alone does not confirm compatibility. For a battery-free or DC-only product, use only the interfaces listed in its model table.
Installation planning
Install the VS-U product within the temperature, ventilation and enclosure conditions stated in its manual. Specify cable sizes, isolation and protection through a qualified installation design. Product dimensions and clearances should be checked before cabinet or mounting work.
Monitoring and interfaces
Check which monitoring ports and communication options are included on the selected VS-U model. Confirm accessory hardware, protocol and firmware before relying on remote monitoring, battery communication or expansion.
Frequently asked questions
Which VS-U model should I choose? Start with the model table and the loads or battery system, then confirm the final configuration before ordering.
Are all optional functions included? No. Availability depends on the model, hardware and agreed supply specification.
Can I combine data from different catalogues? Use one matching model and revision. Confirm any differing values with the supplier.
Discuss your requirements
Contact Techfine Group with your VS-U requirements. Include the model and the application so the electrical configuration and supporting documents can be checked.
