What is the rated grid voltage and frequency?

The rated grid voltage is 400V, and the frequency supports 50Hz or 60Hz.

What cooling method is used for the inverter?

The system employs intelligent air cooling to manage internal temperatures effectively.

Simultaneous Grid-Tied Charging & off-Grid Discharging Modes Power Conversion System Invertor

Name: Simultaneous Grid-Tied Charging & off-Grid Discharging Modes Power Conversion System Invertor
Brand: Qingdao Greef New Energy Equipment Co., Ltd.
SKU: 2244021225

Shandong, ChinaQingdao Greef New Energy Equipment Co., Ltd.

Negotiable

1 Piece

Product profile

Customization

Available

Inverter Efficiency

98.9%

Output Type

Yes

Model NO.

Mars

Output Frequency

50/60Hz

Output Current

145A

Output Voltage

580V

Input Voltage

400A

Output Power

100/110/125kw

Application

on/off Grid System

DC Voltage Operating Range

580-1000 V

Maximum DC Current

173-216A

Permissible Grid Voltage Range

300-460 V

Power Factor

> 0.99

Rated Input Voltage

400V

Ambient Temperature

-40℃~+60℃

Cooling Method

Intelligent Air Cooling

Topology

Without Transformer

Temperature Protection

Supported

Transport Package

Package

Trademark

GREEF

Origin

China

HS Code

85023100

Production Capacity

400 Set/Sets Per Month

Key features

High Efficiency Conversion: Achieves up to 98.9% inverter efficiency for optimal energy utilization.

Dual Mode Operation: Supports simultaneous grid-tied charging and off-grid discharging modes.

Wide DC Voltage Range: Operates within a DC voltage range of 580V to 1000V for flexibility.

High Power Factor: Maintains a power factor greater than 0.99 for stable grid interaction.

Transformerless Topology: Utilizes a transformerless design for improved efficiency and compactness.

Low Harmonic Distortion: Ensures current total harmonic distortion rate is less than 3% at rated power.

Intelligent Cooling System: Features intelligent air cooling for efficient thermal management.

Company profile

Qingdao Greef New Energy Equipment Co., Ltd.

Shandong, China

Business Type: Manufacturer/Factory, Trading CompanyExport Year: 2014-03-18Nearest Port: QINGDAOAverage Response Time: ≤6.95hTerms 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.