3500W Low-Frequency Inverter Charger (QSP Series)
Models GBT3500-212 / -224 / -240 / -112 / -124 / -140 — integrates inverter, automatic charging and AC/battery automatic transfer, with power frequency isolation, strong load capacity and true <10 ms uninterrupted AC/DC output.
Key Features
- Integrates inverter, automatic charging and AC/battery automatic transfer.
- Power frequency scheme with electrical isolation technology — strong load capacity and surge resistance.
- Pure sine wave output with stable voltage and frequency, low ripple.
- Smart 4-stage charging with adjustable charging voltage and current.
- Extremely low static power consumption effectively saves battery energy.
- Multiple protections: AC and DC input high/low voltage, over-current, temperature and output short circuit.
- Battery activation charging mode protects deeply discharged batteries during charging.
- Built-in two independent chargers for starting battery and backup battery (custom version).
- Built-in AC bypass relay (< 10 ms) — true uninterrupted AC/DC output.
- Extra-wide AC input voltage (80–140VAC / 165–265VAC).
- Generator automatic energy matching technology makes full use of generator power (custom version).
- Battery over-temperature protection (optional).
- Single-wire on/off: inverter can be switched on/off with any positive supply signal above 5V (optional).
- Personalized settings via the matching LCD control panel (optional) or communication software.
- Mains auto-start (optional), inverter-priority mode (optional), -40°C cold start (custom).
Technical Specifications
| Parameter | Specification |
|---|---|
| Models | GBT3500-212 / GBT3500-224 / GBT3500-240 / GBT3500-112 / GBT3500-124 / GBT3500-140 |
| Rated Output Power | 3300W |
| Peak Power | 5000W |
| DC Rated Input Voltage | 12VDC / 24VDC / 48VDC |
| DC Input Voltage Range | 10.5–16V (12V); 21–32V (24V); 42–64V (48V) |
| AC Output Voltage | 220VAC ± 3% / 110VAC ± 3% |
| AC Output Frequency | 50 / 60Hz ± 0.5% |
| AC Input Voltage Range | 165–265VAC / 80–140VAC |
| Static Consumption | 95mA |
| Maximum Efficiency | 93% |
| Output Waveform | Pure sine wave (distortion < 3%) |
| Transfer Time | < 10 ms |
| DC Charging Current | 12V: 110A / 90A / 60A / 30A / 0A; 24V: 60A / 30A / 10A / 0A; 48V: 40A / 20A / 10A / 0A — set at factory or via optional LCD display |
| Battery Types | AGM / GEL / OPzV / LFP / LiFePO4 / custom — set at factory or via optional LCD display |
| Protection Functions | Inverter overload, output short circuit, output over-temperature; under-voltage and over-voltage auto recovery; mains-mode over-current; fuse blowing on short circuit |
| Fault Indication | LED indicator |
| Remote Switch (optional) | RJ45 digital interface — charging voltage and current can be set |
| Operating Temperature / Humidity | -15 ~ 55°C / 20% ~ 90% RH (-40°C cold start customizable) |
| Cooling | Forced air cooling |
| Weight | 22 kg |
| Dimensions (mm) | 520 × 375 × 160 (L × W × H) |
Interested in the GBT3500 Series?
Contact us for full datasheets and OEM options.
Contact Us