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December 2021

Acceptable variation in Tilt angle of solar panels at a site

By |2021-12-11T11:08:01+05:30December 11th, 2021|

In certain cases, there would be a variation in the tilt angle of solar panels at a single site itself due to unevenness of the roof, solar arrays spread across multiple roofs, curvature of barriers, uneven cement patches and to avoid shadows from adjacent solar tables and walls. In such cases, customers can raise the [...]

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Inverter Clipping Losses – SolarEdge

By |2021-12-11T11:21:45+05:30December 11th, 2021|

We get questions from clients about oversizing of inverters and why we are connecting more panels to an inverter - like connecting 33 kWp of panels to a 27.6 kVA inverter. Isn't this inefficient or a wastage of solar panels? Let's say that we are using 380Wp panels. The panel is rated 380Wp under STC [...]

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October 2021

Can DC, AC and LA earth pits be connected together?

By |2021-10-17T13:09:51+05:30October 17th, 2021|

Technically Yes. All earthing pits should be bonded together so that there is equipotential bonding amongst them thus preventing back-feed from earth. However, some DISCOMs insist that DC earthing pits, AC earthing pits and LA pits should be kept separate. Please have a read of Legrand's Protection against Lightning Effects guide (Page 8) which [...]

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September 2021

Earthing practices at EcoSoch

By |2021-10-25T15:08:30+05:30September 27th, 2021|

With highly sensitive electrical and electronic components in solar installations, the need for protection of these costly equipment against fault and lightning current is very much necessary. Electrostatic discharge can damage sensitive electronic equipment and disturb the solar power supply. Any voltage difference between individual electronic units can destroy valuable equipment. In addition, noise [...]

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November 2020

UPVC Conduits Vs Pre-GI Cable Trays for Outdoor Use

By |2021-03-18T15:37:27+05:30November 17th, 2020|

At EcoSoch, we use UPVC conduits on the rooftop for a reason whether it be residential, apartment, commercial, industrial or institutional projects as shown below: However, the current norm of other EPC vendors is to use perforated Pre-GI cable trays to carry the DC cables for large projects as shown [...]

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July 2020

DC and AC voltage drop – Standards

By |2020-07-07T18:07:41+05:30July 7th, 2020|

DC Voltage Drop For Solar PV installations, the standard to follow would be from Australia called AS/NZS 5033:2014. It states, "For LV PV arrays under maximum load conditions (Imp), the voltage drop from the most remote module in the array to the input of the inverter should not exceed 3% of the Vmp voltage [...]

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June 2020

Corrosion in Pre-GI and Hot Dip Galvanized (HDG) Structures

By |2020-07-07T09:50:54+05:30June 29th, 2020|

Please have a read of the below article from Nuevosol which talks about corrosion in Pre-GI and Hot Dip Galvanised (HDG) Structures. Salient points are as below: Nuevosol article Pre-GI can be used as long as it is 550 GSM steel. The galvanization coating thickness is a maximum of 20 micron each side for [...]

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CAT6 and RS485 cables for communication

By |2021-09-22T08:19:57+05:30June 29th, 2020|

Basics A CAT6 cable can theoretically carry data for 100m but after 80m, there would be signal attenuation and it would be impractical. So 80m is the practical limit for CAT6 cables. An RS485 cable can carry data upto 4000ft (or 1.2km) @ 100kbps as shown below. If you need more information on the [...]

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Can DC and AC cables run in the same conduit?

By |2020-06-29T11:58:08+05:30June 29th, 2020|

We have been asked a few times in the recent past as to whether we can run DC and AC cables run in the same conduit.The answer is No since the DC cables could induce a DC voltage onto the AC side. The AC sine wave should oscillate about the 0 volt axis i.e., the positive and negative [...]

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Solar Generation in Bangalore

By |2020-06-19T01:20:29+05:30June 19th, 2020|

Solar Installation at Rainbow Drive Villa Community, Bangalore | India Solar Plant Generation in Bangalore, India Generation during Monsoon Season? “Does it work at all in the monsoon months?” “I don’t think Bangalore is an ideal place for Solar Rooftop [...]