Solar Inverter TG-OFG Series 4.2kW–6.2kW Off-Grid Solar Inverter with MPPT

Advanced energy storage product engineered for reliable power applications, scalable supply, and global B2B project requirements.

Model:: Solar Inverter TG-OFG Series 4.2kW–6.2kW
Brand:: VoltCrave

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Off-Grid Home Solar

Convert PV energy and battery storage into AC power for a remote home or cabin. Select the operating mode to match the available solar, battery, and utility sources.

Solar-Powered Farm & Irrigation

Use solar charging with battery storage for selected farm loads and irrigation equipment. Size the array, battery, and motor loads to the inverter model and site requirements.

Workshop Backup Power

Choose a backup-enabled operating mode to support selected workshop loads when utility power is unstable or unavailable. Backup behavior depends on the configured system and connected loads.

Expandable Solar-Battery Systems

Built-in MPPT and adjustable charge settings support compact PV-battery systems for small commercial or community facilities. Confirm parallel limits for the exact model before planning expansion.

PARAMETER	TG-OFG-4K2	TG-OFG-6K2
BASIC SPECIFICATIONS
Product Series	TG-OFG Series
Product Type	Off-Grid Solar Energy Storage Inverter
Rated Power	4200VA / 4200W	6200VA / 6200W
AC INPUT SPECIFICATIONS
Nominal Input Voltage	230VAC
Input Voltage Range (UPS Mode)	170–280VAC
Input Voltage Range (Appliance Mode)	90–280VAC
Input Frequency	50/60Hz (Auto Sensing)
AC OUTPUT SPECIFICATIONS
Nominal Output Voltage	230VAC (Settable)
Rated Output Power	4200W	6200W
Surge Power	8400VA	12400VA
Output Frequency	50/60Hz
Output Waveform	Pure Sine Wave
Peak Efficiency (PV to Inverter)	96%
Peak Efficiency (Battery to Inverter)	93%
Transfer Time (UPS Mode)	10ms
Transfer Time (Appliance Mode)	20ms
Overload Protection	60s @ 105%–110% Load; 10s @ 110%–140% Load; 5s @ ≥140% Load
BATTERY SPECIFICATIONS
Nominal Battery Voltage	48VDC	48VDC
Floating Charge Voltage	54VDC	54VDC
Overcharge Protection Voltage	63VDC	63VDC
SOLAR & AC CHARGING SPECIFICATIONS
Solar Charger Type	Maximum Power Point Tracking (MPPT)
Maximum PV Array Power	5500W	6500W
Maximum PV Open-Circuit Voltage	500VDC
MPPT Operating Voltage Range	60–450VDC
Maximum PV Input Current	27A	27A
Maximum Solar Charging Current	100A	120A
Maximum AC Charging Current	80A	100A
Maximum Combined Charging Current (PV + AC)	100A	120A
PHYSICAL SPECIFICATIONS
Product Dimensions (D × W × H)	418 × 300 × 122mm	418 × 300 × 122mm
Packing Dimensions (D × W × H)	495 × 395 × 215mm	495 × 395 × 215mm
Net Weight	9kg	9kg
COMMUNICATION & CONTROL
Communication Interfaces	RS232 / RS485 (BMS) / Bluetooth / Wi-Fi / Dry Contact
Lithium Battery Activation	Supported via PV or Utility Power
Parallel Operation	Supported
Maximum Parallel Units	12 Units
ENVIRONMENTAL SPECIFICATIONS
Operating Temperature	-10°C to 50°C
Storage Temperature	-15°C to 60°C
Relative Humidity	5%–95% RH (Non-Condensing)