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| Model | VMIV TWIN 4000-48 |
| RATED POWER | 4000VA/4000W |
| INPUT | |
| Voltage | 230 VAC |
| Selectable Voltage Range | 170-280 VAC (For PCs); 90-280 VAC (For Home Appliances) |
| Frequency Range | 50 Hz/60 Hz (Auto sensing) |
| OUTPUT | |
| AC Voltage Regulation (Batt. Mode) | 230 VAC ± 5% |
| Surge Power | 8000VA |
| Efficiency (Peak) PV to INT | 97% |
| Efficiency (Peak) Battery to INT | 93% |
| Transfer Time | 15 ms (For PCs); 20 ms (For Home Appliances) |
| Waveform | Pure sine wave |
| BATTERY | |
| Battery Voltage | 24 VDC |
| Floating Charge Voltage | 27 VDC |
| Overcharge Protection | 33 VDC |
| SOLAR CHARGER & AC CHARGER | |
| Max. PV Array Open Circuit Voltage | 500 VDC |
| Max. PV Array Power | 5000 W |
| MPP Range @ operating Voltage | 60~450 VDC |
| Max. Solar Charge Current | 120 A |
| Max. AC Charge Current | 100 A |
| Max. Charge Current | 120 A |
| PHYSICAL | |
| Dimension, D x W x H (mm) | 119 x 313.6 x 422.8 |
| Net Weight (kgs) | 11 |
| Communication Interface | USB/RS232/GPRS/WIFI |
| ENVIRONMENT | |
| Humidity | 5% to 95% Relative Humidity (Non-condensing) |
| Operating Temperature | -10°C to 50°C |
| Storage Temperature | -15°C to 60°C |