Ginlong Solis PV Inverters

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Service Bulletin-Arc Fault Detection and Troubleshooting

 

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An AFCI or Arc Fault Circuit Interrupter is a device used to detect arcing in an electrical circuit and to interrupt the flow of current.  It is installed in many types of electrical circuits to reduce the chances of an electrical fire due to faulty wiring, bad wiring connections or damage sustained during wiring installation.

For PV systems, it is designed to detect series arcing in the DC cabling or junction boxes.  In the event of an arc, the AFCI circuit will alert the main control CPU in the inverter and interrupt the power conversion process thereby interrupting the DC current flow and reducing the chances of DC wiring related fires.  However, due to the nature of the arc signature coupled with the sensitivity of the arc detection circuit, there can be “false trips” where the arc detector is triggered when no arc is present.  This is usually due to rapid changes in current caused by changes in the light from any number of phenomenon.  However, as an industry, we cannot afford to become complacent and assume that sites with multiple “false” trips are always “false” and reset, or disable, the arc fault protection.  The danger is real.  Inadvertently, a faulty system could get overlooked if ALL trips are not taken seriously.  This may be a hassle for the short term, but the industry will continue to fine tune this technology and the nuisance trips will subside.

The real issue is how do we tell the difference between a false trip and a real arc?  The answer is quite simple; inspect the installation.

Before resetting an arc (even if it has been, or seems to be, a nuisance trip) the site MUST be inspected.  There are many conditions where an arc may develop over time, and not all due to a “bad install”.  Connections in junction boxes can degrade over time.  Terminal connections can come loose due to changes in temperature and cause an arc.  Improper crimping of DC terminals can cause an arc.  Rodents chewing through wires or wiring that has come loose and rubbed against the array racking can also lead to serial arcing.  All of these are common conditions and easily identified with a quick visual inspection.

First of all, arcing leaves some evidence.  The may be discoloration of wiring and racking, melted connectors and insulation or even burned junction boxes on the back of panels.  A quick visual inspection can locate such issues very reliably.  A gentle tug on DC cables whether in the home run connections, panel to panel connections or in the combiner/wiring box can locate wires that have loosened or were not terminated properly.  You can also find bad crimp connections using the same tugging method.  Do not just concentrate on field-installed connectors, there have been many instances where the factory crimp connection on the PV panel was the cause of arcing issues.  The same goes with the PV junction boxes.  Damage can happen between the factory and the site or the diodes can fail both of which can cause serial arcing and trigger an arc fault.  The visual method is very easy, does not require special tools and is effective at pinpointing the failure to a component.

The second method is somewhat easier to execute but does not pinpoint the issue as in the above method.  In some cases, like residential rooftop, it is not easy or even possible to perform the above visual and manual inspection.  In this case, it is recommended to use some sort of high voltage tester to test the cabling to locate a failure. A “Megger” or megohm meter is one example of a simple test set that can help locate arcs to a specific string.  For more testing functionality, a string tester is preferred because it can detect not only serial arcs but also insulation issues and ground faults in the DC cabling.  While it is considerably more expensive, it is far more flexible than the simple “megger” and can be useful in troubleshooting other array issues.  Both of these devices usually test at 250V, 500V and 1000V.  Neither test at 600V which is what residential and some small commercial systems are rated at for maximum VOC.  If the PV and DC wiring is only rated at 600V, use the 500V setting to test.  If the system uses panels and cable rated at 1000V, even if it is residential, it is suggested to test at 1000V.  The reasoning is simple; a fault may only occur at voltages higher than 500V on cold bright days in a 600V system.  The test may pass at 500V, but can fail at 1000V.  Once the faulty string is isolated, then the first method can be used to locate the faulty component.  You can also use the “megger” or string tester to test individual panels if a junction box is suspected but no visible damage is detected.

If, after all these tests, no defect is found, then it is safe to assume that a “false” or nuisance trip has occurred.  In this case, reset the fault and observe the inverter to see if it immediately faults again.  If so, the AFCI circuit may be faulty and the inverter needs replaced.  If not, try to record the exact conditions when the arc fault occurs.  It may not be a sensitivity issue, but a weather related issue. Check the local weather to see if there were any special conditions that may have contributed to the suspected “false” trip.  Remember, a simple rain storm can also uncover issues on a system including arc faults that only occurs when the wiring is wet.

Finally, report any findings back to the inverter manufacturer.  Your input is very valuable in the continued refinement of equipment.  A manufacturer tests to many conditions to cause a failure, but nothing can completely replicate the conditions on your sites in the real world.


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Service Bulletin: Wifi box – Multiple Inverters

 

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The Wi-Fi box is designed to allow several functions that the Wi-Fi stick is not designed for. One of these is to connect directly to Ethernet cable in areas where the Wi-Fi signal from the site is intermittent or not existent. There may be several reasons for this: long distance to the router, instructions between the either and the inverter or the external building materials of the site contain wire mesh, as in stucco exteriors, or other metals that attenuate the signal from the router.

In addition, the Wi-Fi box also allows the connection of multiple inverters to a single Wi-Fi or wired connection. Up to 10 inverters can be connected to a single Wi-Fi box. The connection is easy with the provided cable to connect to the inverter MODBUS interface and then to the Wi-Fi box.  The setup is very similar to the Wi-Fi stick with the exception of an option for cable connection on the setup page.

However, that is not the end of the installation of the Wi-Fi box. First, the Wi-Fi box is not rated for outdoor use and must be either housed in a water tight box or be placed indoors.  Leaving the Wi-Fi box outside without some means of protection will cause the box to fail.

Next, we have to configure the inverters to have unique identifier or addresses. All inverters are shipped with a default address of ”1” from the factory. With multiple inverters attached to a single box, the box can’t identify which inverter it is communicating with if they all have the same address. So, we change the addresses on all but one of the inverters to something else. I suggest making them sequential. For instance, if you have 3 inverters on site, leave one at address “1” and set the others to “2” and “3”. Remember to record these for future reference. If you must replace one of the inverters, you want to set the new inverter to the same address as the one you removed.

Setting the address is quick and easy.

From the main screen, Press the ESC button

Press the DOWN button until “SETTINGS” appears

Press the ENTER button to select “SETTINGS”

Press the DOWN button until “SET ADDRESS” appears

Press the ENTER button to select “SET ADDRESS”

Press the UP or DOWN buttons to change to the desired address

Press the ENTER button to save the address

Press the ESC button to return to the previous menu

 

 

Please download the document from the link below:


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Solar Power International 2016: Ginlong presents Solis 6-10kW Residential Inverters and 36-40kW Commercial Inverters in Las Vegas

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DUBLIN, Ohio, August 23, 2016.  Ginlong Technologies, one of the world’s oldest and largest string inverter manufacturers, will be presenting new and exciting inverter innovations at Solar Power International 2016.

Solar Power International (SPI) is the largest solar trade show in North America and will take place September 12-15, 2016 at the Las Vegas Convention Center, Las Vegas NV.  Presented by SEIA and SEPA, SPI offers attendees excellent opportunities for networking and professional development.  Attendees can touch the latest solar products on the Trade Show floor and hear about exciting trends and technologies at Trade Show events.  Starting Monday morning, PV system installers, PV equipment manufacturers and energy storage professionals will spend four days together in Las Vegas exchanging knowledge and expertise, strengthening ties between industry partners and customers, and promoting the solar energy industry domestically and globally.

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Highlighted at the Ginlong Solis Booth will be:

  • Solis 6K-10K US Single Phase Inverters with industry leading 3 and 4 MPPT designs in a high-power-density, compact package. Featuring high-frequency switching technology and fan-less natural convection cooling for high reliability, the Solis 6K-10K US inverters are 97.8% Peak Efficient (97.5% CEC) and are contained in lightweight (<45 lbs.) NEMA 4X enclosures that allow for one-person installations,
  • Solis 36K-40K US Three Phase Inverters are designed for all commercial and utility-scale installations and lead the industry with 4 MPPT designs that maximize energy harvest. These high quality string inverters feature NEMA 4X enclosures and an external fan-less design for high reliability.  Compact and lightweight (<150 lbs.), Ginlong commercial string inverters are rated at 98.6% Peak Efficiency (98.3% CEC),
  • Solis Rapid Shutdown Devices (RSD). The Solis RSD features an innovative low profile design for a fast, under-the-PV panel installation resulting in a clean, professional appearance.  The Ginlong Solis RSD is ideal for new installations or retrofit projects.  The RSD is certified to UL1741 and compliant with 2014 NEC 690.12.

Come meet the Ginlong Executive Team and technical experts at the Ginlong Solis Booth #647.  Please contact us at sales@ginlong.com or visit our website, www.ginlong.com to learn more.

 

About Ginlong Technologies

Ginlong offers a complete product line of bankable, ultra-reliable and cost effective string inverters for residential, commercial, industrial and utility scale solar projects from 1kW to 40MW.  3rd party qualification testing by DNV GL and sold under the Ginlong Solis brand, the entire product line is listed on the Approved Vendor Lists of leading banks for leasing, PPA and loan programs. Ginlong Solis USA is headquartered in Ohio, warehoused in California, offers NABCEP certified training programs and live, local technical support nationwide.

Ginlong Solis inverters are installed on the Eiffel Tower in Paris, and at the World’s Largest Solar Auto Canopy 20MW in China.  Ginlong Solis inverters won the prestigious EuPD Research Top Brand PV Inverter award in 2016.

 

Source: Ginlong (Solis) Technologies                                Media contact: sales@ginlong-usa.com


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Intersolar NA 2016: Ginlong Presents Solis 6-10kW Residential Inverters and 36-40kW Commercial Inverters in San Francisco

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DUBLIN, Ohio, June 27, 2016.  Ginlong Technologies, one of the world’s oldest and largest string inverter manufacturers, will be presenting new and exciting inverter innovations at Intersolar North America 2016. The well attended solar exhibition in North America will take place on July 12-14, 2016 at the Moscone Center in San Francisco, CA, USA.

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Highlighted at the Ginlong Solis Booth will be the:

  • Solis 6K-10K US Single Phase Inverters, with industry leading 3 and 4 MPPT designs, high power density compact design, high-frequency switching technology, fan-less natural convection for higher reliability, NEMA 4X enclosures, 97.8% Peak Efficiency and 97% CEC Efficiency, light weight (<40 lbs.) for one-person easy installation;
  • Solis 36K-40K US Three-Phase Inverters designed for all commercial and utility-scale installations, with industry leading 4 MPPT designs that maximize energy harvest, external fan-less design for high reliability, NEMA 4X enclosures, 98.6% Peak Efficiency and 98.3% CEC Efficiency, and compact and light weight (<130lbs),
  • Solis Rapid Shutdown Device, with innovative low profile design for fast, under the PV panel installation resulting in a clean, professional appearance, Ideal for new installations or retrofit projects. It is UL 1741 certified and compliant with 2014 NEC 690.12.

Ginlong Solis was chosen by NABCEP and Intersolar North America to offer an installation workshop. Attendees will earn 2 NABCEP CEUs.

Come meet the Ginlong Executive Team and technical experts at the Ginlong Solis Booth #8519.  Please contact us at sales@ginlong-usa.com or visit our website, www.ginlong.com to learn more.

 

About Ginlong Technologies

Ginlong offers a complete product line of bankable, ultra-reliable and cost effective string inverters for residential, commercial, industrial and utility scale solar projects from 1kW to 40MW.  3rd party qualification testing by DNV GL and sold under the Ginlong Solis brand, the entire product line is listed on the Approved Vendor Lists of leading banks for leasing, PPA and loan programs. Ginlong Solis USA is headquartered in Ohio, warehoused in California, offers NABCEP certified training programs and live, local technical support nationwide.

Ginlong Solis inverters are installed on the Eiffel Tower in Paris, and at the World’s Largest Solar Auto Canopy (55MW, Guinness World Record) in China.  Ginlong Solis inverters won the prestigious EuPD Top PV Inverter Brand award in 2016.

 

Source: Ginlong Technologies (Solis)                            Media contact: sales@ginlong-usa.com


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Meet the Ginlong Solis USA Team – Think Globally, Act Locally!

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The Ginlong Solis USA team is a group composed of experienced solar professionals, who are passionate about bringing affordable solar energy to more people and accelerating the transition to a more sustainable future. Team experience includes installing and electrifying more than 2700 sites in the developing world with photovoltaic systems, participating solar industry activities by sitting on the board of Sunspec, State Renewable Energy Industry Alliance, and managing sales and marketing effort at top solar companies.

Short Bio – Ryan Simpson

– Head of Business Development – Residential Inverter

Ryan Simpson currently serves as Head of Business Development – Residential for Ginlong / Solis inverters.  He is a business development and marketing veteran in PV industry with close to a decade of experience opening new channels, distribution and markets for top global PV inverter companies. In his previous role at Power-One / ABB, he was responsible for analyzing, opening and developing the North American Market, with a focus in distribution and residential development. Mr. Simpson is currently sitting on the board of Sunspec. He was the panel speaker at GTM Annual Summit 2016.

Short Bio – Jesse Batista

Head of Business Development – Commercial Inverter

Jesse Batista is a successful Technology Sales & Marketing Executive with over 25 years experience both Domestics and International.  Mr. Batista is a goal oriented forward thinker and sales team motivator, experienced in international strategic account management in both commercial and utility solar sales.  Mr. Batista has a demonstrated track record of top revenue growth in a highly competitive industry while maintaining profitable returns.  His past experience includes the sales and marketing executive roles with a top US inverter manufacturer, Unipower, C&D technologies and Celestica Power etc.

Short Bio – Terence Parker

– Application Engineering Manager

Recently off a sabbatical where he walked the Pacific Crest Trail and wrote a book, Mr. Parker worked at  SolarBridge Technologies as the Applications Engineering Manager in Austin Texas from October 2010 until December 2014 when the company was sold to Sunpower. During this period in Austin, Mr. Parker was elected to the Texas Renewable Energy Industry Alliance (TREIA) Board of Directors in December 2013.  From 1999 to 2010, Mr. Parker worked at United Solar Ovonic (“UNI-SOLAR”) as the Applications Marketing Manager, offering consultation and design assistance for United Solar Ovonic customers worldwide. Mr. Parker developed  system application collateral, installation drawings and application-related sales tools.  Before joining United Solar, Mr. Parker worked with Total Energie for 6 years as a solar energy system designer, overseas project manager and PV system trainer at remote sites around the world. In addition to his work in the US and Europe on PV systems ranging from 10 Watts to 12 Megawatts, he has installed and electrified more than 2700 sites in the developing world with photovoltaic systems and  hybrids. Terence began his career in the renewable energy field at Sandia National Labs, stationed in the Marshall Islands, where he helped develop rural energy policy and renewable energy education programs.

Short Bio – Bernie Grant

– Application Engineering Manager

Bernie Grant, Applications Engineering Manager, is responsible for providing technical support, applications and training for residential and commercial Ginlong Solis inverters in North America.  Prior to Ginlong Solis USA,  Mr. Grant provided field service and support with Chint Power Systems Americas for three-phase string inverters.

Mr. Grant has been in solar since 2007 when he started working for Uni-Solar.  Mr. Grant started from building PV panels then moved into Applications Engineering and system design. As a system designer, Mr. Grant provided budgetary designs for sales staff and customers.  He also designed and oversaw the installation of commercial systems installed by Uni-Solar. Mr. Grant then moved to product design before moving to Texas to take a job with an inverter startup, SolarBridge Technologies.  Mr. Grant provided technical support and training for this microinverter company.


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Mosaic Partners with Ginlong Solis to Make Solar Affordable for Homeowners

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Mosaic, the nation’s top residential solar lending company, added Ginlong to its Approved Vendor List and made reliable, bankable, affordable and innovative Ginlong Solis PV string inverters available for its loan customers in the United States.

In the last three years, loans have grown in popularity in the solar industry. With a loan, a homeowner owns the rooftop solar system and can claim federal tax credits and state tax incentives. Customers are connected to top solar installers and can qualify instantly for no money down loans with fixed interest rates and multiple term options. For solar installers, Mosaic provides a streamlined financing platform to drive sales growth. Honored by Fast Company as a Top Ten Most Innovative Company in Energy for two consecutive years, Mosaic is also a U.S. Department of Energy SunShot award recipient. (joinmosaic.com)

Homeowners will benefit from a complete product line of Ginlong Solis string inverters and experience significant return on their investment.  Established in 2005, Ginlong Solis is one of the oldest and largest global string inverter specialists, manufacturing both PV and wind inverters that convert DC power to AC power and help reduce the carbon footprint of consumers interested in using “green technologies” like solar energy systems. Ginlong Solis USA is headquartered in Ohio, warehoused in California, offers NABCEP certified training programs and live, local technical support nationwide. Ginlong Solis inverters were installed on the Eiffel Tower in Paris in February 2015.  Ginlong Solis inverters won the prestigious EuPD Top PV Inverter Brand Award in 2016.  (ginlong-usa.com)

Ginlong, a PV inverter innovator, leads the industry with ­­2 MPPT Solis 2.5kW-5kW, 3 MPPT Solis 6-7.6kW, and 4 MPPT Solis 6kW-10kW single-phase PV string inverters. Ginlong Solis inverter products have an outstanding field record of reliability and performance in the United States since the product line’s introduction in 2009. Ginlong Solis inverters produce industry leading energy yields thanks to its high efficiency and outstanding low irradiation performance for long working hours. Its ultra-low DC startup voltage and unique mismatched-string features give engineers design flexibility.

Solis inverters are compact and light enough for one person to install and feature UL Salt-spray tested, NEMA 4X (IP65) enclosures that can withstand the most difficult outdoor conditions. The Solis inverter comes with remote data monitoring solutions for any project size.  The latest product release is Solis’s breakthrough low-profile UL 1741 certified and NEC 690.12 compliant Rapid Shutdown Device.

Since 2012, Mosaic has helped more than 16,000 people go solar across 40 states in partnership with a network of over 250 installers, including 21 of the top 25 solar providers. Mosaic partners with Ginlong to make renewable energy accessible and affordable for homeowners by providing the simplest borrower experience in the industry and accelerate the transition to a more sustainable future.

 

Source: Ginlong Technologies (Ginlong Solis USA)

Media Contact:  sales@ginlong-usa.com


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SNEC 2016: Ginlong Solis Presents Innovative Energy Storage and PLC Intelligent Tracking Inverter System

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SNEC 2016: The “green heart” of Eiffel Tower in Paris, Ginlong Solis PV inverter attracted hundreds of visitors: Art + Engineering = Simplicity and Stylish (Art) + Reliability and Performance (Engineering), leading the trend of green sustainable lifestyles for people around the world.

DUBLIN, Ohio, May 20, 2016.  Ginlong Technologies, one of the world’s oldest largest string inverter manufacturers, will be presenting new and exciting inverter innovations at the SNEC 2016 PV Power Expo.  SNEC 2016, one of the most influential PV trade shows in the world, showcases over 1,500 exhibitors and attracts more than 150,000 attendees each year.   The SNEC 2016 International Photovoltaic Power Generation Conference and Exhibition will take place on May 24-26, 2016 at the Shanghai New International Expo Center, China.

Highlighted at the Ginlong Solis Exhibit will be the breakthrough PLC Intelligent Tracking System.  This system, which features Ginlong Solis 36kW and 40kW 3-phase string inverters embedded with PLC intelligent tracking functions, PLC Intelligent controller and includes a tracking angle control board, smart sensors and efficient motors, will track the movement of the sun across the sky in real time and optimize daily energy harvest.  This system is ideal for water-surface installations, agricultural solar projects, etc. and can add up to 30% to the energy harvest of any PV project.

Ginlong Solis 36kW and 40kW three phase string inverters are widely used for industrial, commercial and utility-scale solar projects worldwide.  They feature industry-leading four (4) MPPT’s (maximum power point tracking technology) in each inverter, 7-inch LCD displays, an ultra-wide DC input voltage range (220VDC – 800VDC), highly efficient operation (98.6%), IP65 (NEMA 4X) enclosures, RS485, Wi-Fi and GPRS communication solutions.  Proven performance and high reliability will ensure long-term operation and a reliable return on investment for your solar projects.

Ginlong offers a complete product line of bankable, ultra-reliable and cost effective string inverters for residential, commercial, industrial and utility scale solar projects.

Come meet the Ginlong Executive Team and technical experts at the Ginlong Solis Exhibit, #E6-001.  Please contact us at sales@ginlong.com or visit our website, www.Ginlong.com to learn more.

About Ginlong Technologies (Solis)

Established in 2005, Ginlong Technologies is one of the world’s oldest and largest string inverter manufacturers.  Combining unmatched experience in more than 60 countries across 6 continents, Ginlong Solis has strong leadership positions in the world’s fastest growing solar markets.  Ginlong offers a complete product line of bankable, ultra-reliable and cost effective string inverters for residential, commercial, industrial and utility scale solar projects.  3rd party qualification testing by DNV GL and sold under the Ginlong Solis brand, the entire product line is listed on the Approved Vendor Lists of leading banks for leasing, PPA and loan programs.

Ginlong Solis inverters are installed on the Eiffel Tower in Paris, and at 55MW world’s largest solar canopy (Guinness World Record) in China. Ginlong Solis inverters won the prestige EuPD Top Brand PV Inverter Brand award in 2016.

Source: Ginlong Technologies (Solis)

Media contact: sales@ginlong-usa.com, Ginlong Solis USA