Off-Grid Inverter WTI-NB-3.6K/24-220-F

The Off-Grid Inverter WTI-NB-3.6K/24-220-F is a compact power conversion unit designed to regulate and manage electrical energy flow within an independent power system. From the product images, the inverter adopts a wall-mounted structure with a durable metal enclosure, ensuring structural stability and consistent installation performance. The front panel integrates a 3.3-inch LCD display along with four physical control buttons, allowing direct interaction with system parameters. Indicator lights labeled AC, INV, CHG, and FAULT are positioned above the display, providing clear visual status feedback for system operation.

From a user experience perspective, the inverter focuses on simplicity and operational clarity. The LCD interface enables users to monitor voltage, current, and system status in real time without requiring external monitoring devices. The button-based navigation allows precise adjustments during system setup and maintenance. With a compact size of 435 by 285 by 100 mm and a weight of 6 kg, the unit is easy to install and manage in various environments. The operating noise level is maintained at 50 dB, ensuring stable acoustic performance during continuous operation. Communication interfaces including RS485, CAN, and WiFi provide access to system data both locally and remotely, improving monitoring efficiency and enabling flexible system management.

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Model	WTI-NB-3.6K/24-220-F
AC Input
Nominal Voltage	208/220/230/240V ac,L+N+PE
Frequency Range	50/60Hz
Input Voltage Range	90-280 APP；170-264 UPS
Current Input (Max Continuous)	20A
AC Output
Output Voltage	208/220/230/240V ac,L+N+PE
Rated Power	3.6kW
Power factor	≥0.99
Current Output (Maximum Continuous)	15.6A ac
Max Output Overcurrent Protection / Bypass	20A/1min
Max Output Overcurrent Protection / Battery	1min@102%~110% Load 10s@110%~130% Load
Battery
Battery Type	LFP
Rated Voltage	24V
Voltage Range	21-29.2V
Max Charging Current	100A(AC+PV)
Default Charging Current	60A
Default Utility Charging Current	40A @Utility Only
PV Input
Number of MPPT / Strings per MPPT	1/1
Max DC Input Power	5KW
Max Open Circuit Voltage	500V dc
MPPT Voltage Range	40-450V dc
Startup Voltage	60Vdc
Max MPPT Charging Current	100A
Max DC Input Current	18A
Maxi DC Short Circuit Current	22A
Features
Parallel Operation	-
Protection Degree (IP Rating)	IP20
General Parameters
Noise	50dB
Dimensions	435285100mm
Weight	6kg
Display and Communication
Display	LCD(3.3''）
Communication	485/CAN/wifi

Supporting Solar Power, Mains Power And Battery Connection
DPS Digital Control Technology, Dual-Transformer Online Design, Adopting Input PFC Technology, Input Power Reaches 0.99, Efficient Inverter Topology Output
New Type Of High-Efficiency MOSFET, Less Heat Generation, Smaller Size,longer Lifespan
Combined With WENTAl ESS, Optimized Design, Longer Battery Life
'0' V Start-Up
Equipped With An External WIFI Module, It Can Be Remotely Monitored Via A Mobile App (optional)

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Home Energy -

The inverter supports residential power systems requiring stable and continuous electricity supply. With a rated output of 3.6 kW, it can maintain multiple household loads simultaneously while ensuring voltage stability within the 208 to 240 V AC range. The system enables structured monitoring through its integrated interface, allowing users to track energy usage and system status in real time. The stable battery voltage range ensures reliable energy storage performance, supporting consistent electricity supply under varying consumption conditions and improving overall energy management efficiency.

Remote Homes -

In off-grid residential environments where grid access is limited, the inverter provides a stable solution for managing electrical power. The wide AC input voltage range of 90 to 280 V allows the system to accept unstable auxiliary power sources without interruption. The maximum charging current of 100 A supports efficient energy storage, ensuring sufficient power availability over time. The integrated control interface allows users to manage system parameters directly, reducing the need for external diagnostic tools and improving usability in isolated living environments.

Small Offices -

For small office environments, the inverter provides stable electrical performance with a continuous output current of 15.6 A, ensuring reliable operation of essential equipment. The defined overload capacity allows temporary increases in power demand without system interruption. Communication interfaces such as RS485 and CAN enable integration into monitoring systems, supporting centralized control and data tracking. The system ensures consistent power delivery, improving operational stability in office environments where uninterrupted electricity is required.

Telecom Sites -

Telecommunication systems require stable power supply, and this inverter ensures consistent voltage output under varying input conditions. The low operating noise of 50 dB supports installation in controlled environments without causing disturbance. The photovoltaic input capacity of up to 5 kW allows extended operation using renewable energy sources. Communication protocols enable remote system monitoring, allowing operators to track performance and system status without requiring on-site inspection.

Backup Power -

As a backup power system, the inverter provides stable support during power interruptions. The system ensures controlled energy transition between sources, maintaining output stability during switching conditions. The battery charging system with adjustable current levels ensures stored energy is available when required. The LCD interface allows real-time monitoring of system readiness and performance, ensuring reliable operation during unexpected outages and maintaining continuous power supply.

Farm Power -

In agricultural environments, the inverter supports stable electricity supply for operational equipment. The consistent output of 3.6 kW ensures reliable energy delivery for systems requiring continuous operation. The wide photovoltaic input range allows flexible solar panel configurations in open areas. The system maintains stable performance under varying environmental conditions, ensuring reliable operation across extended usage periods without interruption.

Mobile Setup -

For mobile or temporary installations, the inverter offers a compact structure with a weight of 6 kg, allowing easier transportation and installation. The system supports multiple energy inputs including AC and photovoltaic sources, enabling flexible setup in changing environments. With a maximum DC input power of 5 kW, it adapts to different energy supply conditions efficiently. The integrated monitoring interface allows users to track performance and adjust parameters in real time, ensuring stable operation during deployment in dynamic environments.

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