NH133 15-18.5KW Solar Water Pump Inverter

1. Key performance upgrade highlights (distinguishing it from the low-power 1.5-5.5kW segment)

1.1 Heavy-duty vector drive optimization: Enhanced torque output for high-lift, high-flow water pumps; low-speed heavy-duty torque fluctuation controlled within ±5%; no frequency reduction during full-load operation of 100-meter deep wells and long-distance water pipelines; sufficient overload margin; continuous and stable full-load output during peak water usage periods for farmland irrigation.
1.2 High-speed dynamic MPPT tracking: The upgraded multi-gradient illumination recognition algorithm improves the tracking response speed by 40% in cloudy and twilight illumination change scenarios, increases the utilization rate of photovoltaic power generation throughout the day by 18%, and enhances the matching of large-scale photovoltaic arrays;
1.3 Long Pipeline Constant Pressure Dedicated PID: Built-in pipeline pressure compensation logic automatically offsets pressure loss in long pipelines, supports multi-pump linkage synchronous pressure stabilization, and is compatible with village and town pipe networks and large-scale field sprinkler irrigation systems, without the need for an additional pressure stabilization control cabinet.
1.4 Enhanced heat dissipation sheet metal structure: The overall dimensions are H279mm×W180mm×D162.5mm, with widened aluminum heat dissipation fins, resulting in lower temperature rise during continuous operation in high-temperature farmland well house environments; the mounting holes are M5, and the sheet metal body has a vibration resistance rating of 5.9m/s², making it suitable for vehicle-mounted mobile irrigation units and fixed pump houses in the field.

2. Expand and improve communication functions

Terminal channels have been fully expanded to accommodate clustered monitoring requirements:
Control terminals: 6-channel DI, dual-channel high-precision AI, supporting simultaneous connection of multiple level and pressure sensors;
Output circuit: 1 high-speed pulse FM, 2 independent relays, dual-channel isolated analog output;
Enhanced communication: The 485 bus supports parallel networking of multiple frequency converters, can be connected to cloud monitoring modules, and allows remote viewing of daily water pumping volume, photovoltaic power generation, and fault records. It also supports remote parameter modification and remote start-up and shutdown of units, meeting the centralized operation and maintenance needs of agricultural projects.

3. Multiple industrial-grade protection mechanisms

In addition to basic overvoltage, overcurrent, phase loss, and overtemperature protection, three new protections specifically for medium-power scenarios have been added:
Long cable motor protection: Suppresses dv/dt impact of long cables, suitable for projects where the distance from the well house to the water pump exceeds 100m;
Low pressure and water shortage linkage in the pipeline network: multi-level water level logic, frequency reduction when the water level is low, and delayed shutdown when there is no water to prevent damage to the large pump from running dry;
Grid complementarity and shock protection: soft switching buffer during automatic switching between photovoltaic and grid, no current surge, and seamless connection of dual energy sources for water supply.

4. Core Application Scenarios

Sprinkler/drip irrigation for contiguous farmland of 100 acres or more, centralized domestic water supply stations in villages and towns, drinking water systems for medium-sized cattle and sheep ranches, irrigation for contiguous greening of economic forests in mountainous areas, small and medium-sized desert sand fixation and water lifting projects, and photovoltaic replacement of diesel water pumps for water conservancy renovation projects; the preferred model for medium-sized water supply projects with a daily total water consumption of 100 to 300 tons.

Installation dimensions of the keyboard base

Diagrams of the overall dimensions and installation dimensions of the plastic structure

Diagrams of the overall dimensions and installation dimensions of the sheet metal structure