Subscribe to our free daily newsletters
  Space Travel News  




Subscribe to our free daily newsletters



SOLAR DAILY
A Real Sun Flower Blossoms In LA

illustration only
by Bradley Bartz
Los Angeles CA (SPX) Dec 20, 2010
The original Los Angeles Flower Mart is going solar with a 280 KW grid-tie system to power the premiere flower market resource in the largest wholesale flower district in the United States.

The LA Flower Mart grid-tie solar electric system is receiving a significant cash rebate from the Los Angeles Department of Water and Power (LADWP) and a full 30% tax grant from the Federal government. The System is expected to generate over 10 million kWh of electricity over its 25 year warranted life and more after that.

This solar grid-tie system is one of two systems approved by LADWP for a "Line Side Tap" for the back-feeding of solar generated electric power.

A line-side-tap is the process of tapping into the electrical infrastructure before the main panel circuit breaker of the client. The purpose of this type of tap is to ensure the busbar and electrical equipment is rated to handle the enormous current being generated by this 280KW solar system.

"When we first walked among the flowers to see the main panel we were quite overwhelmed by all of the beautiful colors and smells, said Dan Marnien the lead solar designer from MM Solar Solutions.

Dan continued with, "once we got to the roof we realized that it was eight buildings connected by shared walls and the solar panels would eventually be connected to just one meter in the main The original Los Angeles Flower Mart building."

The roof tops are a variety of structure types including a barrel roof, several flat sections and a collection of industrial wave roofs. The variety presented design challenges as the Schuco 225 Watt solar panels will be connect in 89 strings of 14. Each panel has an open circuit DC Voltage of 36.88.

This gets carried to a NEC 2005 Max DC Voltage of 14 x 41.67 equaling 583.4 VDC and 570.5 VDC for NEC 2008. The minimum DC voltage 14 x (29.76 -((70c - 25c) x .0035 x 29.76)) = 351 VDC. The SMA 250 KW Inverter has a minimum DC voltage input of 330 VDC. ok, I digress with math, the 14 panel strings are configured across 8 roofs for a total of 1,246 solar panels at 225 watts each for 280,350 watts.

The mounting hardware is a mixture of methods for each roof. The roofing work is being done by Tom Filla of All Pro roofing. His team focuses on the installation and waterproofing of solar mounting feet for the leading solar companies in Southern California. I'd like to estimate over one million mounting feet have been installed by Tom and his crew.

This LA Flower Mart Commercial Solar installation will use 607 stanchions that are 3 inches tall and 1,234 feet of 4 by 4 redwood sleepers. The sleepers will have penetrations every 2 feet for an estimated 617 penetrations.

ABC Solar Inc, the B, C-46 licensed solar contractor who is installing The original Los Angeles Flower Mart Solar Electric Grid-Tie System has hired All Pro roofing since 2003. Tom and his crew had years of experience when ABC Solar started hiring them. So, yes, I'd like to estimate that Tom Filla and his band of solar mounts have made over 1 million roofing penetrations for mounting solar panels.

"The team I assembled to install has the most experience of any solar crew in California," boasted Bradley Bartz, president of ABC Solar Incorporated.

"We almost always start our project with Tom at All-Pro, but it is the electrical line-side-tap and SunnyCentral SMA 250 KW inverter that prompted serious commercial solar experience."

The ABC Solar team takes the designs from the project lead at MM Solar Solutions and performs every step necessary to commission the solar system and start solar energy generation.

This includes extensive site visits, measurements and pictures. Each team leader is led thru the property and then multiple conversations and meetings go into producing a production and time schedule. ABC Solar focuses on getting every screw, bolt and wire ready for Just-In-Time delivery to the job site.

The SMA 250 KW Inverter is being landed on the second story of the built in parking garage that services the LA Flower Mart. The move from truck, up concrete driveway and to the inverter location requires a certified fork-lift driver and, of course, a fork lift. ABC Solar's team features veterans of the Navy, Army and National Guard. The best workforce is a trained one.

Electrical Configuration
The original Los Angeles Flower Mart Solar System is configured in 89 strings of 14 Schuco of Germany 225 watt solar panels to 32 Square D 30Amp/3p 600VDC Disconnect located at each array. From the Array location the solar strings are combined in a Solar Bos 600VDC Combiner box with each string having its own 15amp fuse.

From the roof in large conduit and large wire we core through the parking lot to the inverter location where we connect to two Square D HU364 200A/3p 600VDC disconnects. From here we go to the magic chamber of the SMA America SunnyCentral 250U (480VAC) grid-tie solar inverter.

This 97% efficient SMA product is connected to a Webox so that real-time solar production can be monitored by the client. The Inverter sends its 480 VAC power to a Square D HU365 600VAC 400A/3p Lockable Unfused Disconnect.

This is a lockable requirement by the utility company LADWP and to provide for more fire safety. From here the power goes to a LADWP Generation Meter that is a 400A 480VAC Square D UK7T.

Now that the solar power is accounted for, we send the power to a Interconnection Disconnect that is fused and lockable. It is a fused disconnect because this LA Flower Mart Solar Grid-Tie system is a Line-Side-Tap and bypassed the circuit-breakers in the main service panel. This unit is a Square D H365N 400A/3p lockable 600VAC fused disconnect with 400A, 200KVA I.R. Fuses.

To complete our solar system we connect to a LADWP bi-directional meter and, Now, the teams at ABC Solar, MM Solar Solutions, All-Pro Roofing and The original Los Angeles Flower Mart say, "Spin That Meter Backwards!"



Share This Article With Planet Earth
del.icio.usdel.icio.us DiggDigg RedditReddit
YahooMyWebYahooMyWeb GoogleGoogle FacebookFacebook



Related Links
M and M Solar Solutions
Schueco Solar of Germany
ABC Solar
All About Solar Energy at SolarDaily.com



Memory Foam Mattress Review
Newsletters :: SpaceDaily :: SpaceWar :: TerraDaily :: Energy Daily
XML Feeds :: Space News :: Earth News :: War News :: Solar Energy News


SOLAR DAILY
Solopower Offers World's Most Powerful Certified Flexible CIGS Module
San Jose CA (SPX) Dec 17, 2010
SoloPower continues to make steady progress with the successful expansion of its product line to include the newly certified SFX3 module. Capable of producing up to 260 Wp, the SFX3 is the most powerful flexible, certified, thin film CIGS module available for purchase in the marketplace. SoloPower's aperture efficiency also continues to improve with NREL measuring flexible modules made on ... read more







SOLAR DAILY
ISRO Set To Launch Heaviest Satellite For Telecom And TV

The Flight Of The Dragon

ISRO To Launch New Satellite On December 20

SpaceX Dragon Does Two Orbits Before Pacific Splashdown

SOLAR DAILY
Wind And Water Have Shaped Schiaparelli On Mars

The Three Ages Of Mars

Odyssey Orbiter Nears Martian Longevity Record

Drilling For The Future Of Science

SOLAR DAILY
Robotic Excavations Could Help Get Helium 3 From Moon To Earth

A Softer Landing on the Moon

Neptec Wins Canadian Space Agency Contract To Develop A New Generation Of Lunar Rovers

Mission to far side of moon proposed

SOLAR DAILY
Kuiper Belt Of Many Colors

Reaching The Mid-Mission Milestone On The Way To Pluto

New Horizons Student Dust Counter Instrument Breaks Distance Record

Nitrogen Methane Dominate Icy Surface Of Eris

SOLAR DAILY
Qatar-Led International Team Finds Its First Alien World

Planetary Family Portrait Reveals Another Exoplanet

New Pictures Show Fourth Planet In Giant Version Of Our Solar System

Carbon-Rich Planet: A Girl's Best Friend

SOLAR DAILY
Brazil launches rocket into suborbit

New JPL Workers Shed Training Wheels For Rocket Launch

Fueling error blamed in loss of satellites

Russia probes navigation system spending after crash

SOLAR DAILY
China Builds Theme Park In Spaceport

Tiangong Space Station Plans Progessing

China-Made Satellite Keeps Remote Areas In Venezuela Connected

Optis Software To Optimize Chinese Satellite Design

SOLAR DAILY
Research Points To Better Understanding Of Carbon In Comets

MegaPhase RF Cables Enable Conclusion Of Seven-Year Deep Space Program

Study: Earth's precious metals from space

Dawn On A Smooth And Steady Course


The content herein, unless otherwise known to be public domain, are Copyright 1995-2010 - SpaceDaily. AFP and UPI Wire Stories are copyright Agence France-Presse and United Press International. ESA Portal Reports are copyright European Space Agency. All NASA sourced material is public domain. Additional copyrights may apply in whole or part to other bona fide parties. Advertising does not imply endorsement,agreement or approval of any opinions, statements or information provided by SpaceDaily on any Web page published or hosted by SpaceDaily. Privacy Statement