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PV hybrid invertor SI23

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Veichi SI23 Solar Inverters — Industrial Solutions for High-Power Pump Stations

The Veichi SI23 series is a range of high-power solar pump inverters from 37 to 200 kW, designed for three-phase submersible and surface pumps in industrial water supply and irrigation systems. Unlike the SI30 series (0.7–11 kW), the SI23 targets large-scale projects: deep artesian boreholes, agricultural irrigation systems, municipal water supply and industrial facilities. Each inverter features a built-in MPPT controller for maximum solar energy harvesting, and supports hybrid operation — solar and grid simultaneously.

How to Choose a Veichi SI23 Solar Inverter

Selecting an SI23 inverter depends on pump motor power, borehole depth and required system throughput. The primary criterion is that the inverter rated power must match or exceed the pump motor power. For borehole pumps, also consider the operating current and permissible overload. Below is a comparison of the most popular SI23 models:

ModelPowerRated CurrentApplication
SI23-T3-037G-A37 kW75 AIrrigation, medium boreholes
SI23-T3-075G-A75 kW150 ADeep artesian boreholes
SI23-T3-110G-A110 kW210 AIndustrial water supply
SI23-T3-160G-A160 kW310 ALarge irrigation systems
SI23-T3-200G-A200 kW380 AMunicipal water supply

Manufacturers of SI23 Series Solar Pump Inverters

Veichi is a Chinese manufacturer of industrial automation and drive technology, specializing in variable frequency drives, solar inverters and PLCs. The SI23 series is engineered specifically for high-power pump equipment. Veichi SI23 inverters feature a built-in PLC for process automation (scheduling, pump alternation), and support Modbus RTU and RS485 protocols for SCADA system integration. Manufacturing is certified to ISO 9001 and CE standards.

SI23 Inverter Specifications

  • Power range: 37 to 200 kW — full spectrum for industrial pump stations
  • Supply: three-phase 380 V — industrial standard
  • MPPT controller: built-in maximum power point tracker for optimal solar energy harvesting
  • Hybrid mode: automatic switching between solar panels and 380 V grid
  • IP20 protection: designed for cabinet or indoor installation
  • Output frequency: up to 600 Hz — suitable for high-speed industrial pumps
  • Communications: Modbus RTU, RS485, optional CANopen and Profibus for industrial networks

Warranty and Support

All Veichi SI23 solar inverters come with an official 24-month manufacturer warranty. As the official Veichi distributor in Ukraine, we provide a full range of services: technical consultation on power selection for your specific borehole, solar pump station design, delivery across Ukraine and commissioning. Payment by bank transfer for legal entities or by card. Contact our engineers for ordering or consultation.

Frequently Asked Questions

What pumps are compatible with the Veichi SI23 inverter?

Veichi SI23 is designed for three-phase submersible and surface pumps rated 37 to 200 kW. This includes industrial borehole pumps, irrigation units and water supply pump stations. Supply is three-phase 380 V with output frequency up to 600 Hz.

What is the difference between SI23 and SI30 series?

SI23 is the high-power series (37–200 kW) for industrial pumps with IP20 protection for cabinet installation. SI30 is the low-power series (0.7–11 kW) with IP65 models for outdoor mounting. SI23 offers more communication protocols and a built-in PLC for multi-pump automation.

Can the SI23 inverter work with both solar panels and grid power?

Yes, SI23 supports hybrid operation mode. The inverter automatically switches between solar panels and 380 V grid. When solar irradiation is sufficient, the pump runs on solar power; during cloudy weather or at night, it switches to grid. This ensures uninterrupted water supply.

How to calculate the number of solar panels for an SI23 inverter?

The solar array power should be 1.2–1.5 times the inverter rated power for stable operation. For example, a 37 kW SI23 requires 45–55 kW of panels. Panels are connected in series strings with voltage within the inverter MPPT range (typically 350–780 V DC).

What is the IP protection rating of SI23 inverters?

All SI23 models have IP20 protection — designed for indoor or cabinet installation. For outdoor mounting without additional enclosure, we recommend the SI30 series with IP65-rated models.

What warranty comes with Veichi SI23 solar inverters?

Official manufacturer warranty is 24 months. As the official Veichi distributor in Ukraine, we provide full service: technical consultation, configuration selection, delivery, commissioning and warranty service.