MAX500-PV MPPT Solar Pump Inverter – 3 Phase, IP65 | INOMAX

1. Overview – Leading OEM Solar Pump Inverter Manufacturer with Custom R&D

As a professional solar pump inverter manufacturer with our own in‑house R&D team, INOMAX designs and produces the MAX500-PV series – a dedicated PV pump inverter that converts DC power from solar panels into AC power to drive submersible or surface pumps. We do not simply rebrand generic products; we develop our own hardware and software, allowing us to offer customized solar VFD solutions tailored to specific pump curves, voltage requirements, and environmental conditions.

In addition to our standard models, we provide OEM solar pump inverter services and private label manufacturing for global clients. Under strict confidentiality agreements, we have supplied customized solar powered AC pump drives to a Japanese heavy machinery group and an American crane manufacturer – both requiring unique control logic, enclosure modifications, and brand labeling. While we cannot disclose their names publicly, we are happy to share references privately with serious distributors and pump OEMs.

Whether you need a 3 phase solar pump inverter for a deep well submersible pump, a single phase solar pump inverter for a small surface pump, or a completely tailor‑made solar pump controller with your own logo and firmware, the MAX500-PV platform can be adapted. With optional IP65 solar inverter enclosure for outdoor installation, our VFD solar pump controller is built to last in harsh environments. As a trusted AC drive for solar pump manufacturer, we have delivered over 20,000 units worldwide with a defect rate <1% and 24‑month warranty.

Key OEM & Customization Capabilities:
✅ Full in‑house R&D – hardware, firmware, and PCBA design
✅ Custom label, logo, packaging, and model numbering
✅ Firmware modification: custom pump protection curves, special start/stop logic, remote monitoring API integration
✅ Enclosure customization: color, IP rating (IP55/IP65), special cable glands
✅ Factory‑matched tuning for specific pump brands (OEM partnership)
✅ Confidentiality agreements available – your design stays yours

Key Benefits of Our Solar Powered AC Pump Drive:
✅ True plug‑and‑play – connect solar panels and pump, it runs automatically
✅ MPPT efficiency >99% – more water even on cloudy days
✅ Hybrid AC/DC input – seamless priority to solar, AC backup available
✅ Built‑in dry‑run and tank‑full protection – no external solar pump controller needed
✅ IP20 standard, IP55/IP65 optional – suitable for dusty and wet outdoor environments
✅ 0.75kW – 250kW (single and three‑phase output)

2. Core Technology – MPPT Solar Inverter with Sensorless Vector Control

As a professional solar pump inverter manufacturer, we equip every MAX500-PV with advanced Maximum Power Point Tracking (MPPT) and sensorless vector control – the core of an efficient photovoltaic water pumping inverter.

3. Key Advantages – Why Our Solar Powered AC Pump Drive Solves Real Pain Points

4. Industry Solutions – Sustainable Solar Water Pump System for Remote Areas

Our MAX500-PV solar pump inverter has been deployed in thousands of projects across Africa, Middle East, Southeast Asia, and South America – providing a sustainable solar water pump system for remote areas.

4.1 Deep Well Irrigation – Solar Inverter for Deep Well Submersible Pump

4.2 Farm Irrigation – Solar Pump Inverter for Agriculture Irrigation

4.3 Livestock & Remote Communities – Off‑Grid Water Pumping Solution

4.4 Hybrid Systems – Solar + Grid/Generator

Global summary: 5,000+ units in Africa, 4,000+ in Middle East, 3,000+ in Southeast Asia, 2,500+ in South America, 10,000+ in China.

5. Complete Model Range – 3 Phase / Single Phase Solar Pump Inverter

All MAX500-PV solar pump inverters follow the naming convention: MAX500-PV-VoltageCodePowerCode

• Voltage code 1 = 220V single‑phase input / single‑phase output (0.75‑5.5kW) – Single Phase Solar Pump Inverter

• Voltage code 2 = 220V single‑phase input / three‑phase output (0.75‑5.5kW)

• Voltage code 3 = 220V three‑phase input / three‑phase output (0.75‑7.5kW) – 3 Phase Solar Pump Inverter

• Voltage code 4 = 380V three‑phase input / three‑phase output (0.75‑250kW) – Industrial Solar Pump Inverter 380V

• IP55/IP65 available as optional upgrade for all models. Choose IP65 solar inverter for direct outdoor installation.

6. Direct Replacement for Competitor Solar Pump Drives

7. Quality Assurance & Manufacturer Capabilities – Your Trusted OEM Partner

Every MAX500-PV solar pump inverter is built and tested with the same rigor as our industrial drives. But beyond quality, what makes INOMAX different is our ability to customize.

Our In‑House R&D & Manufacturing Strength:

• Automated SMT lines (German equipment) – consistent quality

• Hardware 100% inspection – no missing components, loose terminals

• Functional 100% test – every I/O, protection, MPPT tracking tested with a real pump (not simulation)

• Burn‑in test – 24 hours at 50°C ambient before shipment

• Conformal coating as standard – 4 layers of German Bectron resin (critical for outdoor solar)

• IP55/IP65 optional – for harsh outdoor, dusty, or high‑humidity environments

• Firmware team – can modify control algorithms, add custom protections, integrate with your IoT platform

Proven OEM Track Record (Confidential):
We have successfully delivered customized solar pump inverters to:

• A Japanese heavy machinery group (one of the world‘s largest) – requiring specific torque curves and enclosure modifications for their submersible pumps.

• An American crane manufacturer – needing a ruggedized solar auxiliary power unit for remote construction sites.

Due to non‑disclosure agreements, we cannot publish their names. However, we can provide private references to qualified distributors and OEM partners upon signing a mutual NDA.

For Pump Manufacturers:
If you manufacture water pumps and want to offer a complete solar water pump system to government tenders or retail customers, we can create a dedicated solar pump inverter that bears your brand, matches your pump’s exact specifications, and is factory‑tuned to your motor parameters. This gives you a competitive edge in off‑grid water pumping solution tenders.

Result: Annual defect rate <1%, typical lifespan >8 years. 24‑month warranty. OEM/private label minimum quantity: 100 units per model.

8. Frequently Asked Questions (FAQ) – For Distributors & Pump OEMs in Middle East, Southeast Asia & South America

Q1: I am a solar equipment distributor in Saudi Arabia. I already sell solar panels, hybrid inverters, and batteries. Why should I add MAX500-PV to my portfolio?
As a distributor in the Middle East, adding a dedicated solar pump inverter allows you to offer a complete solar water pump system – panels + inverter + pump – to agricultural and livestock clients. The MAX500-PV is the only plug‑and‑play solar VFD that works seamlessly with any AC pump. You will capture additional revenue from the booming off‑grid irrigation market without needing technical staff for commissioning. Many distributors in UAE, Saudi Arabia, and Egypt have increased their average order value by 30‑50% by adding our PV pump inverter.

Q2: What technical support do you provide for distributors in Southeast Asia (Indonesia, Philippines, Vietnam)?
We provide full remote commissioning support via WhatsApp/TeamViewer, online training sessions, and a dedicated partner portal with marketing materials, sizing tools, and installation videos. For large projects, we can arrange on‑site support through our local partners in Jakarta, Manila, and Ho Chi Minh City. We also stock common spare parts in Singapore for fast delivery (2‑3 days) across Southeast Asia.

Q3: I am a water pump manufacturer in Brazil. Can you provide OEM branding on the MAX500-PV?
Yes. As a solar pump inverter manufacturer with our own R&D team, we offer full OEM/ODM services: custom logo, packaging, model number, and even default parameter presets for your specific pump models. We have successfully delivered customized solar VFD to a Japanese heavy machinery group and an American crane manufacturer (names available under NDA). Many pump manufacturers in India, Turkey, and South Africa already use our solar powered AC pump drive as a factory‑matched controller for their pumps supplied to government irrigation schemes. Minimum order quantity for OEM branding starts at 100 units per model.

Q4: What is the MOQ for distributors in Egypt or Nigeria? What are the profit margins?
For stock units (≤110kW), MOQ is 5 pieces per model – low risk to start. You can expect 30‑50% gross margin depending on local pricing. Because we are the manufacturer, there are no middlemen. Distributors in Nigeria, Ghana, and Kenya typically achieve payback on their first container within 3‑6 months. For high‑volume partners (500+ units/year), we offer exclusive territory agreements and additional volume rebates.

Q5: How does MAX500-PV compare to using a standard AC drive + external MPPT box?
Standard AC drives cannot track MPPT – they need an external solar charge controller or a separate MPPT box. That adds cost, complexity, and points of failure. Our MPPT solar inverter integrates all functions in one unit: MPPT, VFD, dry‑run protection, tank‑full control, and hybrid AC/DC input. You save 30‑40% on BOM cost and reduce installation time from hours to minutes. This is a strong selling point for pump OEMs bidding for price‑sensitive government tenders.

Q6: What is the lead time for a container order to Colombia or Peru?
For stock models (all voltage code 4, 0.75‑250kW), lead time is 2‑3 weeks from Shenzhen. Sea freight to Callao (Peru) or Cartagena (Colombia) takes approximately 35‑40 days. Air freight (3‑5 days) is available for urgent sample orders. We help you plan your inventory to avoid project delays – many distributors in Chile and Argentina maintain safety stock of our IP65 solar inverter models for outdoor installations.

Q7: I am a pump manufacturer in India. How do you handle warranty claims and after‑sales service for government projects?
We offer a 24‑month standard warranty and can provide extended warranty (36 months) at nominal cost for government tenders that require longer coverage. For warranty claims, we ship replacement units immediately and cover return freight for defective units within the first 12 months. We also keep a local stock of spare control boards and IGBT modules in Mumbai for quick replacement. Major Indian pump manufacturers have used our solar inverter for motor in over 5,000 government‑subsidized irrigation pumps.

Q8: What is the solar water pump system price list for distributors in Turkey or Pakistan?
We do not publish fixed price lists because costs vary with volume and configuration. However, we provide tiered pricing based on annual commitment. Contact us with your estimated annual quantity (e.g., 100‑500 units/year) and we will send a confidential distributor price sheet. Many distributors in Turkey, Pakistan, and Bangladesh achieve 40%+ margin after local taxes and shipping.

Q9: Does this solar VFD work with single‑phase pumps? What about three‑phase?
The MAX500-PV series includes both single phase solar pump inverter (voltage code 1, output 220V single phase) and 3 phase solar pump inverter (voltage codes 2,3,4). For pump OEMs, we recommend using the three‑phase output models with your three‑phase pumps – they are more efficient and have higher starting torque for deep wells. Single‑phase models are ideal for small surface pumps (≤5.5kW).

Q10: How do I help my customers choose the right solar pump inverter size for farming in Nigeria or Kenya?
We provide a free sizing tool (Excel sheet) that calculates required inverter size based on pump power, well depth, head, and local solar irradiance. Share it with your customers to give professional advice. As a rule: inverter power should be 1.2 – 1.5× pump rated power for shallow wells (<50m), and 1.5 – 2× for deep wells (>150m).

Q11: Can this solar powered AC pump drive be used with a generator as AC backup?
Yes. Many projects in Yemen, Iraq, and Sudan use the hybrid AC input with diesel generators. The inverter automatically switches to generator when solar is insufficient. It also supports single‑phase generator input on our three‑phase models – a unique feature that helps rural customers with small generators.

Q12: What is the MOQ for sample orders? Can I test one unit before committing?
Absolutely. Sample orders (1‑2 units) are welcome. We provide sample pricing with a discount that will be credited back to your first container order. Many distributors in Vietnam, Thailand, and Malaysia started with a sample of MAX500-PV-4015 (15kW).

Q13: Do you provide training for my sales team on how to sell solar pump inverters?
Yes. We offer quarterly online training webinars (in English, with Spanish and Arabic subtitles) covering: how to size a system, how to present ROI vs diesel pumps, how to handle technical objections, and how to install the drive. We also provide a distributor sales kit (brochures, one‑page spec sheets, case studies translated into local languages). Our distributors in Colombia, Peru, and Chile use these materials to win government and NGO tenders.

Q14: What are the most popular models for agricultural irrigation in Saudi Arabia and UAE?
For medium‑sized farms, MAX500-PV-4030 (30kW) and MAX500-PV-4037 (37kW) are the bestsellers. For deep wells (200‑300m), we recommend MAX500-PV-4055 (55kW) or MAX500-PV-4075 (75kW). Stock these models to cover 80% of demand.

Q15: How does this photovoltaic water pumping inverter compare to KEWO or INVT?
Independent testing in Yemen showed that a 30kW MAX500-PV successfully drove a 26kW pump at 300m depth, while a competing 45kW KEWO failed. Our MPPT efficiency is >99% vs ~95% for INVT. Also, our dry‑run and tank‑full protections are built‑in and require no parameters – competitors require external sensors and programming.

Q16: Can you provide a real‑time monitoring pump inverter solution for my customers?
Yes. Our optional GPRS/4G module allows your customers to monitor water flow, pump speed, DC voltage, and fault status from any smartphone or PC. This is especially attractive for government projects that require remote performance reporting. We can also white‑label the monitoring app with your logo for OEM partners.

Q17: What is the best solar pumping system for livestock for sale in South Africa?
For livestock watering, we recommend MAX500-PV-4007 (7.5kW) or MAX500-PV-4011 (11kW) paired with a submersible pump in a borehole. The built‑in dry‑run protection and tank‑full auto‑stop are critical for remote ranches.

Q18: How do I become an exclusive distributor or OEM partner for INOMAX?
We grant exclusivity based on minimum annual commitment (typically 500‑1,000 units for distribution, or 100+ units for OEM). Send us your company profile, current product lines, and sales forecast. We can also sign a mutual NDA to share references of our Japanese and American OEM clients. Countries like Egypt, Nigeria, Indonesia, Peru are still open for exclusive representation.

Q19: Does MAX500-PV work with solar panels for water pump from any brand?
Yes. As long as the solar array’s Vmp and Voc are within range, any standard 60‑cell or 72‑cell poly or mono panels work. This flexibility is important for distributors who already have panel supply agreements with brands like Longi, Jinko, Trina, or Canadian Solar.

Q20: What is the typical payback period for a farmer using our solar pump inverter?
Replacing a diesel pump (3‑4 liters/hour at $1/liter) saves $2,000‑3,000 per year for a 7.5kW system. Payback is 12‑24 months. For grid‑connected areas with high electricity tariffs ($0.15‑0.25/kWh), payback is also within 2‑3 years.

9. Optional Accessories for Your Solar Water Pump System

10. Contact Us – Leading Solar Pump Inverter Manufacturer

Ready to power your solar borehole pumping system or solar powered lift pump for water treatment with zero fuel cost? As a professional AC drive for solar pump manufacturer with in‑house R&D and proven OEM track record, we provide factory‑direct pricing, technical support, and global shipping.

Email: info@inomaxtechnology.com
WhatsApp/WeChat: +86 150 1853 9591
Website: www.inomaxtechnology.com

INOMAX – Build your trust of technology from China.
Your preferred solar VFD and off‑grid water pumping solution supplier.