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5-30kw off-Grid Charge Controller with Dump Load for Wind Turbine System
US$1,499.00-4,899.00
1 set
Product profile
Customization
AvailableAfter-sales Service
YesWarranty
1 Years for FreeModel NO.
AHCCCondition
NewCertification
CEApplication
Charger Controller, Wind ControllerRated Voltage
48VAC-380VACFunction
Rectifier, Control, DC OutputType
Wind Controller, Wind Turbine ControllerWork Time
24 HoursDisplay
LCD ScreenInput Protection
Fuses; Lightning Protection CircuitsTransport Package
Carton / Playwooden CaseTrademark
GREEFOrigin
ChinaHS Code
90328990Production Capacity
400 Sets Per MonthKey features
Advanced MPPT Technology: Boosts electricity production with 98% engagement with actual wind energy output curve.
Modular Design: Hot-swappable power absorption circuit for easy maintenance and electrical isolation.
IOT Functionality: Enables remote view, control, and data export via wired network and APP.
Wide Voltage Range: Supports 48VAC-380VAC input with adjustable output parameters for various storage types.
Comprehensive Safety Protection: Features over-voltage, over-current, anti-reverse connection, and short circuit protection.
LCD Display & Control: Large touchscreen displays voltage, current, power, and allows on-site parameter adjustment.
High Efficiency at Low Wind: Optimized for high efficiency at low wind speeds with saturation mode matching load power.
1-Year Free Warranty: Covers free replacement and service for one year from the date of purchase.
Company profile

Business Type: Manufacturer/Factory, Trading CompanyExport Year: 2014-03-18Nearest Port: QINGDAOAverage Response Time: ≤8.43hTerms of Payment: T/T, PayPal, Western Union, etc.International Commercial Terms(Incoterms): FOB, EXW, CFR, CIF, DDP, CPT, Others, FCA
AI-Powered supplier vetting
SummaryQingdao Greef New Energy Equipment Co., Ltd. is identified as both a trading company and manufacturer/factory in China, offering wind turbines, permanent magnet generators, hybrid systems, and related equipment. Its stated capabilities include generator coverage from 500W to 5MW, two production lines, annual output of 1,000 wind turbine/permanent magnet generator sets, and 6–10 R&D engineers and quality-control staff. The company reports QHSE, ISO 9001, and HSE management certifications, CE-certified exports, warranty periods of 3–5 years, and after-sales service as part of its end-to-end offering. Evidence also supports customization through design, prototyping, production, and quality-control services. However, the provided information does not sufficiently establish financial credibility or a broad customer track record; only one buyer and one trade transaction are listed.
Supplier typeThe supplier is explicitly classified as both a Trading Company and Manufacturer/Factory. Its stated product portfolio includes wind turbine systems, permanent magnet generators, controllers, inverters, solar systems, and batteries, supporting a combined manufacturing and trading role.
CertificationsThe supplier states that its management systems include QHSE, ISO 9001, and HSE. It also states that products exported to Europe, South America, and North America carry CE certification, indicating documented management-system and product-certification claims.
After-Sales capabilityThe company describes end-to-end services including after-sales service and states that exported products have 3–5 year warranty periods. It also claims rapid response and guaranteed quality and on-time delivery through Alibaba Trade Assurance, providing explicit support for post-sale capability.
R&D capabilityThe supplier states that its permanent magnet generators range from 500W to 5MW and offers multiple renewable-energy technologies, including vertical- and horizontal-axis wind turbines, hybrid systems, and disc coreless generators. Its stated engineering and renewable-energy innovation activities support innovation capability, although no independently verified R&D results are provided.
Production capacityThe supplier reports two production lines and annual output of 1,000 wind turbine/permanent magnet generator sets. It also states generator coverage from 500W to 5MW and has 6–10 quality-control staff, providing explicit evidence of established production capacity.
Customization capabilityThe company explicitly claims customized end-to-end solutions covering design planning, schematic development, 3D renderings, physical prototyping, volume production, quality control, and after-sales service. This directly supports customization capability across product-development and delivery stages.
Product Q&A
Q:What is the warranty period?
A:
We provide a 1-year free warranty for this product.
Q:What is the rated voltage range?
A:
The rated voltage range is 48VAC to 380VAC.
Q:Does the controller support IOT functions?
A:
Yes, it features IOT functionality for remote view, control, and data export via APP.
Q:What types of batteries are supported?
A:
It supports lead-acid batteries, lithium batteries, and DC bus bars.
Q:What is the MPPT efficiency?
A:
The controller achieves 98% engagement with the actual wind energy output curve.
Send Inquiry
*To:
Qingdao Greef New Energy Equipment Co., Ltd.
Qingdao Greef New Energy Equipment Co., Ltd.*Content:
Supplier replies will be sent to your registered email
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