Manufacturer Price Pure Sine Wave DC to AC Converter Solar PV Power Grid Tie Inverter

An industrial grid-tied solar inverter

A PV inverter installed in a porchSolar grid-tie inverters are designed to quickly disconnect from the grid if the utility grid goes down. This is an NEC requirement that ensures that in the event of a blackout, the grid tie inverter will shut down to prevent the energy it produces from harming any line workers who are sent to fix the power grid.

Grid-tie inverters that are available on the market today use a number of different technologies. The inverters may use the newer high-frequency transformers, conventional low-frequency transformers, or no transformer. Instead of converting direct current directly to 120 or 240 volts AC, high-frequency transformers employ a computerized multi-step process that involves converting the power to high-frequency AC and then back to DC and then to the final AC output voltage.[9]

 

Historically, there have been concerns about having transformerless electrical systems feed into the public utility grid. The concerns stem from the fact that there is a lack of galvanic isolation between the DC and AC circuits, which could allow the passage of dangerous DC faults to be transmitted to the AC side.[10] Since 2005, the NFPA's NEC allows transformerless (or non-galvanically) inverters. The VDE 0126-1-1 and IEC 6210 also have been amended to allow and define the safety mechanisms needed for such systems. Primarily, residual or ground current detection is used to detect possible fault conditions. Also isolation tests are performed to insure DC to AC separation.

 

Many solar inverters are designed to be connected to a utility grid, and will not operate when they do not detect the presence of the grid. They contain special circuitry to precisely match the voltage, frequency and phase of the grid.

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What is the MPPT ?

Maximum power poinMaximum power point tracker

Solar inverters use maximum power point tracking (MPPT) to get the maximum possible power from the PV array.Solar cells have a complex relationship between solar irradiation, temperature and total resistance that produces a non-linear output efficiency known as the I-V curve. It is the purpose of the MPPT system to sample the output of the cells and determine a resistance (load) to obtain maximum power for any given environmental conditions.

t tracking[edit]Main article:

The fill factor, more commonly known by its abbreviation FF, is a parameter which, in conjunction with the open circuit voltage (Voc) and short circuit current (Isc) of the panel, determines the maximum power from a solar cell. Fill factor is defined as the ratio of the maximum power from the solar cell to the product of Voc and Isc.

 

1) Inverter packaging: carton box,1 pc inverter,

2)Inverter shipping: Inverters can be shipped by air freight, sea way. Depend on the different quantities, the best cost-effective shipping service will be advised.

1)Q:How can i trust your company?
    A:Golden electric is The top 10 inverter manufacture in China - more than 350 Agents in local market and more than 100 foreign  clients make OEM,ODM order from us,Golden electric is a big company, we have cooperation with the world-class companies. Our company over 100 employees, products pass CE,IEC,TUV,SAA, RCM, ROHS certificates.
2) Q:Your products?
     A: Golden electric is factory for inverter,Automatic transfer swithc,Surge protector device,distribution box Enclosure, DC fuse etc. Providing customers very competitive sources, and can be your sourcing agent in China. Goods are following international standards, IE, CE, ISO9001 ,SGS etc.
3)  Q:   Do you have forwarder?
      A:   Yes, we have good forwarder cooperated over 10 years, they help us import and export . For small package orders, suggest to use by Express.
4)  Q:   Your address ?
      A:    Locates in Guangzhou province, China,welcome to visit us
5)  Q:What's the automatic transfer switch(ATS) guarantee?
       A: 2 years warranty. If customer's problem, then customer burden. If our problem, then we send new goods to customer to replace asap. 
6)  Q:What's about MOQ? Delivery time ?
      A: 1pcs for inverter. Normally less than 100PCS with stock, quick support. 
7)  Q: What's the payment term?
       A: Normally 100% T/T in advanced payment. If big order then about 50% advanced payment, balance before shipment.PAYPAL,WESTERN UNION,CASH for small order .
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