KV500 Series Solar Pump Inverter
Runs a three-phase 380V pump or machine from a single-phase 220V supply or straight from PV panels, with no phase converter in between.
What the KV500 Is For
The KV500 accepts single-phase 220VAC input and delivers three-phase 380VAC output across a 2.2kW to 18kW range, with a built-in MPPT algorithm for direct PV input. It exists for one specific problem: sites that only have single-phase power, or no grid at all, but need to run standard three-phase equipment.
Key Benefits
- Removes the cost, footprint and losses of a step-up transformer or phase converter.
- Drives both asynchronous induction motors and permanent magnet synchronous motors, so pump choice stays open.
- Book-style narrow body mounts easily in a small roadside or pump-house cabinet.
- IP20 protection with an independent air duct handles dusty, hot pump houses.
Application Scenarios and Buyers
Irrigation Contractors
Farm boreholes fed by a single-phase rural line, driving a standard three-phase submersible pump.
Livestock and Ranch Operators
Watering points far from the yard where running three-phase cable is not economic.
Off-Grid Water Supply Projects
Drinking water and domestic supply in villages with PV arrays and no reliable line.
Retrofit and Upgrade Installers
Workshops with only single-phase service that need to run a three-phase machine tool or fan.
Desert Control and Land Management Projects
Remote planting sites where the pump must run unattended on solar.
What Goes Wrong Without It
Only Single-Phase Power Is Available
The usual answer is a step-up transformer or a rotary phase converter, both bulky and lossy. The KV500 does the conversion inside the drive: single-phase 220VAC in, three-phase 380VAC out.
The Site Swings Between Solar and Grid
Dual power supply modes accept AC grid input on single phase and DC photovoltaic input on PV+/PV-, so the same installation works either way.
Panels Underperform in Changing Light
The built-in MPPT algorithm keeps the array at its maximum power point instead of losing yield every time cloud passes.
Unattended Pumps Run Dry
Dry-run protection, tank-full detection and low-frequency protection stop the pump before the well or the motor is damaged.
Nobody Is on Site to Check It
RS485 with Modbus RTU makes the drive readable by whatever monitoring system the project already uses.
Design Details That Matter on Site
Single-Phase 220V In / Three-Phase 380V Out
Directly drives standard industrial three-phase motors without a step-up transformer.
Dual Power Supply Modes
AC grid input (single-phase) and DC photovoltaic input via PV+/PV- terminals.
Built-In MPPT Algorithm
Maximises energy harvested from the solar array.
Motor Type Compatibility
Drives asynchronous induction motors (IM) and permanent magnet synchronous motors (PMSM).
Intelligent Protections
Dry-run protection, over-current, over-voltage suppression, low-frequency protection and tank-full detection.
RS485 Modbus RTU
Remote monitoring ready for SCADA and irrigation control systems.
Full Technical Detail From the KEVAN Datasheet
Figures below are as published by KEVAN for this series. Anything not listed is confirmed by our engineers before order.
Shenzhen KEVAN Drive Technology Co., Ltd. proudly presents the KV500 Series Solar Pump Inverter — a purpose-built solution for challenging environments like photovoltaic water pumping and off-grid industrial sites. Its standout capability lies in accepting single-phase 220V input and delivering three-phase 380V output, directly solving the long-standing challenge of operating three-phase equipment where only single-phase power is available.
With a flexible power range of 2.2kW to 18kW, the KV500 series combines solar-optimized MPPT algorithms, precision vector control, and multi-layer protection features into a compact, reliable package. Whether for agricultural irrigation, livestock watering, or small-scale industrial machinery, the KV500 delivers consistent performance, energy savings, and peace of mind in even the most remote locations.
Key Features
- Single-phase 220V Input / Three-phase 380V Output – Directly drives standard industrial three-phase motors without a step-up transformer
- Dual Power Supply Modes – Supports both AC grid input (single-phase) and DC photovoltaic input (PV+/PV-)
- Built-in MPPT Algorithm – Maximizes solar panel energy harvesting
- Motor Type Compatibility – Drives both asynchronous induction motors (IM) and permanent magnet synchronous motors (PMSM)
- IP20 Protection + Independent Air Duct – Enhanced heat dissipation and dust resistance
- Intelligent Protections – Dry-run protection, over-current protection, over-voltage suppression, low-frequency protection, and tank full detection
- Remote Monitoring Ready – RS485 communication supporting Modbus protocol
- Flexible Installation – Book-style narrow body design for easy cabinet mounting
Technical Specifications
| Power Range | 2.2kW ~ 18kW |
| Input Voltage / Phase | Single-phase 220VAC (±15%), 50/60Hz |
| Output Voltage / Phase | Three-phase 380VAC (0 ~ input voltage) |
| Output Frequency | 0 ~ 600Hz (G type: 0 ~ 600Hz) |
| Control Mode | V/F control, open-loop vector control (VC without PG) |
| Starting Torque | 150% rated torque at 0.5Hz (VC without PG) |
| Overload Capacity | 150% for 1 min, 180% for 10s, 200% for 0.5s |
| PV Input (DC) | DC photovoltaic input available (F14 group parameters) |
| Communication | RS485 (Modbus RTU) |
| Protection Level | IP20 |
Wiring method for control circuit
Irrigation System Diagram
Applications
The KV500 series solar pump inverter is ideally suited for the following use cases:
- Solar Pumping Systems – Agricultural irrigation, livestock watering, desert control
- Remote Water Supply – Drinking water and domestic water systems in off-grid areas
- Industrial Equipment – Small machine tools, textile machinery, fans and pumps
- Retrofit Projects – Upgrading sites with only single-phase power supply
Why Choose KV500?
- Cost-saving design – Eliminates the need for a step-up transformer or phase converter; directly converts 220V single-phase into 380V three-phase
- Solar-ready – Built-in MPPT algorithm and photovoltaic water pump special parameters
- Easy commissioning – User-friendly keypad with LED display; supports parameter upload/copy via keypad
- Reliability – Multiple protection features (dry-run, over-current, low frequency) ensure long-term unattended operation
- Global compatibility – Supports both 50Hz and 60Hz power grids
Contact KEVAN for KV500 Inquiries
For pricing, technical support, or sample requests for the KV500 series vector control inverter, please contact our overseas sales team:
Overseas Sales Contact: Mr. Li
Phone/WhatsApp: +86-13725501611
Email: [email protected]
Company Address:
Room 501, Building 11, Nangang Second Industrial Park
No. 1026, Songbai Road, Sunshine Community, Xili Street
Nanshan District, Shenzhen, China
Views Wiring and System Diagrams
How It Compares With the Rest of the Range
How the KV500 sits against the other KEVAN series:
| Against SV13 | Both are solar pump drives. The SV13 covers 0.4-22kW across single-phase 220V, three-phase 220V and three-phase 380V pumps with GPRS app control. The KV500 is the specialist for single-phase 220V input driving three-phase 380V output. |
|---|---|
| Against SV20 | The SV20 is the higher-feature solar platform with GPRS remote control, automatic light detection and AC/DC switching in under 10ms. The KV500 is the leaner choice for a straightforward single-phase or PV-fed installation. |
| Against KV100 | The KV100 is a grid-powered general drive with no MPPT and no PV input. Use it when a normal supply exists. |
Use Guide
- Confirm the pump motor is three-phase 380V and that its rated current sits inside the 2.2-18kW band.
- Size the PV array to the pump, not to the drive - undersized arrays start late in the day and stop early.
- Wire PV+/PV- to the DC input and set the F14 parameter group for photovoltaic operation.
- Connect the low water probe and tank-full input before commissioning, not after the first dry-run incident.
- Use RS485 Modbus RTU to bring status into the irrigation controller where one exists.
- Leave the recommended clearance around the narrow body so the independent air duct works as designed.
Other KEVAN Series
KV100 Series Economic Frequency Inverter
A cost-controlled general-purpose drive for lathe spindles, fans, pumps and conveyor lines, built to hold full output in a 50 C cabinet.
View Specifications →
KV600 Series High Performance Vector Inverter
The heavy-load drive in the KEVAN range - closed-loop vector control, expansion cards and torque at near-zero speed for wire drawing, hoists and extruders.
View Specifications →
SV13 Series Photovoltaic Water Pump Inverter
A narrow book-style solar pump drive covering almost every small and mid-size pump voltage, with app monitoring and grid backup built in.
View Specifications →Related Industries
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- Choosing Solar Water Pump Inverters for Sustainable Land Management
- The Application of Solar Water Pump Inverters in Automated Irrigation District Management Part Two
- The Application of Solar Water Pump Inverters in Automated Irrigation District Management
- System Integration and Compatibility Considerations for Solar Photovoltaic Power Inverters
KV500 Series Solar Pump Inverter FAQ
Can the KV500 really run a three-phase 380V pump from a single-phase 220V supply?
What power range does it cover?
Does it accept solar panels directly?
What protects the pump if the well runs dry?
What is the protection rating?
Can it be monitored remotely?
Request a Quote for the KV500 Series Solar Pump Inverter
Single-piece samples ship in 3-5 days, bulk orders in 10-25 days, with an 18-month warranty.