Veichi SI23: First Hybrid Solar Pump Inverter from Veichi in Ukraine
A new solution for autonomous water supply has arrived on the Ukrainian industrial electronics market — the Veichi SI23 solar pump inverter. This hybrid variable frequency drive is designed specifically for pump systems powered by solar panels with automatic grid switchover capability. The series covers power ratings from 1.5 to 200 kW and includes 22 models for single-phase (220V) and three-phase (380V) supply.
The key difference between SI23 and conventional frequency inverters is the built-in MPPT controller with 99.9% efficiency that automatically tracks the maximum power point of solar panels and adapts pump operation to current irradiance levels.
Veichi SI23 Technical Specifications
| Parameter | Value |
|---|---|
| Power range | 1.5 — 200 kW |
| Number of models | 22 SKUs |
| Supply (single-phase) | 1x220V (1.5—3.7 kW) |
| Supply (three-phase) | 3x380V (2.2—200 kW) |
| DC input D3 series | 150—450 VDC |
| DC input D5 series | 250—750 VDC |
| MPPT efficiency | 99.9% |
| Overall efficiency | ≥96% |
| Output frequency | 0—600 Hz |
| Overload | 150% for 1 minute |
| Communication | RS485 / Modbus RTU |
| Protection rating | IP20 |
Supported Motor Types
- Asynchronous (induction) motors
- Permanent magnet synchronous motors (PMSM)
- Single-phase motors
- Synchronous reluctance motors (SynRM)
Control Modes
- VFD mode — standard frequency control from AC grid
- CVT mode — solar panel operation with constant voltage
- MPPT mode — automatic maximum power point tracking
Why 99.9% MPPT Matters
MPPT algorithm efficiency directly impacts pump system productivity. While a standard VFD loses 20—30% of potential solar energy, Veichi SI23 with 99.9% MPPT ensures near-complete utilization of available solar power.
Hybrid Power: Solar + Grid
Veichi SI23 operates as a full hybrid inverter: the pump runs on solar panels during sufficient irradiance and automatically switches to AC grid when DC bus voltage drops — without stopping the pump.
Built-in Intelligent Features
- Dry-run protection — automatic stop when no water detected
- Sleep mode — automatic sleep/wake based on demand
- Built-in PLC for custom logic programming
- PID controller for pressure/level maintenance
- IoT monitoring via GPRS, GPS, WiFi
Model Range and Prices
| Model | Power | DC Input | Supply | Price, UAH |
|---|---|---|---|---|
| SI23-D3-1R5G-A | 1.5 kW | 150—450 VDC | 1x220V | 12,994 |
| SI23-D5-2R2G-A | 2.2 kW | 250—750 VDC | 3x380V | 13,973 |
| SI23-D5-004G-A | 4 kW | 250—750 VDC | 3x380V | 16,020 |
| SI23-D5-7R5G-A | 7.5 kW | 250—750 VDC | 3x380V | 23,274 |
| SI23-D5-015G-A | 15 kW | 250—750 VDC | 3x380V | 36,490 |
The full SI23 catalog (22 models from 1.5 to 200 kW) is available in the Veichi frequency inverters section.
How to Order Veichi SI23 in Ukraine
All Veichi SI23 models are available for order at chastotnik.ua with delivery across Ukraine. Lead times range from 5 to 25 business days. Prices include VAT in UAH.
