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Off-Grid Inverter WTI-NB-12K/48-220-F
  • Off-Grid Inverter WTI-NB-12K/48-220-F
  • Off-Grid Inverter WTI-NB-12K/48-220-F
Off-Grid Inverter WTI-NB-12K/48-220-F
Off-Grid Inverter WTI-NB-12K/48-220-F

Off-Grid Inverter WTI-NB-12K/48-220-F

  • Product Information

The Off-Grid Inverter WTI-NB-12K/48-220-F is a high-capacity power conversion unit designed to manage and regulate electrical energy between multiple sources and loads within an independent power system. Based on the visual structure in the images, the unit adopts a compact wall-mounted metal enclosure with an integrated control panel, featuring a central LCD interface and physical navigation buttons, allowing users to directly access system data and operating status. The front panel includes clearly labeled indicators such as AC, INV, CHG, and FAULT, which provide immediate visual feedback on system conditions and operational states.


From a user interaction perspective, the inverter is engineered for stable and intuitive operation. The 6-inch LCD display provides structured parameter visibility, enabling users to monitor voltage levels, load conditions, and charging status without requiring external tools. The physical button layout supports precise parameter adjustments, reducing the complexity of commissioning and maintenance. With a weight of 15 kg and dimensions of 512 by 432 by 128 mm, the unit maintains a balance between structural robustness and manageable installation. Noise control at 50 dB ensures that the inverter operates within acceptable acoustic levels, contributing to a controlled working environment. The system integrates communication interfaces including RS485, CAN, and WiFi, enabling both local and remote data access, which improves operational transparency and system management efficiency.

1776759496237841

  • Parameter
ModelWTI-NB-12K/48-220-F
AC Input
Nominal Voltage208/220/230/240V ac,L+N+PE
Frequency Range50/60Hz
Input Voltage Range90-280 APP;170-264 UPS
Current Input (Max Continuous)52A
AC Output
Output Voltage208/220/230/240V ac,L1+N1+L2+N2+PE
Rated Power12kW
Power factor≥0.99
Current Output (Maximum Continuous)54.5
Max Output Overcurrent Protection / Bypass70A/1min
Max Output Overcurrent Protection / Battery1min@102%~125%Load
10s@>125%Load
Battery
Battery TypeLFP
Rated Voltage48V
Voltage Range42-58.4V
Max Charging Current160A
Default Charging Current100A
Default Utility Charging Current40A @Utility Only
PV Input
Number of MPPT / Strings per MPPT2/2
Max DC Input PowerTotal 15kW (9kW per MPPT)
Max Open Circuit Voltage500V dc
MPPT Voltage Range60-450V dc
Startup Voltage80V
Max MPPT Charging Current160A
Max DC Input CurrentDual MPPT: 22.5A + 22.5A / Single MPPT: 27A
Maxi DC Short Circuit Current33A
Features
Parallel Operation-
Protection Degree (IP Rating)IP20
General Parameters
Noise50dB
Dimensions512*432*128mm
Weight15kg
Display and Communication
DisplayLCD(6'')
Communication485/CAN/wifi



  • Features
  • 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)

1776759514905281

  • Application

Residential Power 

The inverter is suitable for residential systems requiring stable and continuous electricity supply. With a rated output of 12 kW, it can support multiple electrical circuits simultaneously, maintaining voltage consistency within the 208 to 240 V AC range. The system enables structured energy management through its integrated monitoring interface, allowing users to observe consumption patterns and operational status. The stable battery voltage range from 42 to 58.4 V ensures reliable energy storage performance, supporting consistent power availability under varying load conditions.

Remote Housing 

In isolated living environments where grid access is limited or unavailable, the inverter provides a reliable energy management solution. The wide AC input range of 90 to 280 V allows the system to accept unstable or variable input sources without frequent interruptions. The high charging capacity of up to 160 A supports efficient energy storage, ensuring sufficient power reserves. The integrated display and control interface allow users to manage system parameters directly, reducing the need for specialized equipment during operation.

Small Industry 

For small-scale industrial operations, the inverter supports stable electrical performance with a continuous output current of 54.5 A. This ensures consistent operation of equipment requiring steady voltage supply. The defined overload tolerance allows machinery to handle startup currents without disrupting system stability. Communication interfaces such as RS485 and CAN enable integration into industrial monitoring systems, supporting centralized data tracking and operational control without interrupting workflow.

Telecom Sites 

Telecommunication systems require stable and uninterrupted power supply, and this inverter ensures consistent voltage regulation under varying conditions. The low operating noise of 50 dB supports installation in controlled environments without introducing excessive acoustic disturbance. The system supports photovoltaic input up to 15 kW, enabling long-term operation. Communication protocols allow remote monitoring, ensuring system status can be accessed and managed efficiently without direct physical interaction.

Backup Systems 

As a backup power solution, the inverter provides controlled energy transition and stable output performance during power interruptions. The system supports multiple charging modes, with adjustable current levels from 40 A to 160 A, ensuring that stored energy remains available when needed. The LCD interface provides real-time system data, allowing users to monitor readiness and performance continuously. The structured overload response ensures that sudden load increases are managed without compromising system stability.

Agriculture Use 

In agricultural environments, consistent electrical supply is essential for equipment operation. The inverter provides stable output at 12 kW, ensuring reliable energy delivery. The wide photovoltaic input range from 60 to 450 V allows flexible panel configurations suitable for large outdoor installations. The system maintains stable performance under varying environmental conditions through controlled voltage regulation, ensuring continuous operation over extended periods.

Mobile Systems 

For temporary or mobile installations, the inverter offers a compact and manageable structure with a weight of 15 kg, allowing flexible deployment. The system supports multiple input sources including AC and photovoltaic power, enabling adaptable energy configurations. With a maximum DC input power of 15 kW, it accommodates different energy setups efficiently. The integrated monitoring system allows users to track performance and make adjustments in real time, ensuring stable operation even in changing conditions.


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