Blog

Below you will find a selection of blog posts on technical topics, news from the media and various topics we found noteworthy. 

Helios Solar Operations & Maintenance

Following my purchase of the Emazys Z200, I’d like to explain why I have purchased it.Initially, I had been made aware of the fault-finding capabilities by James Hoare, who has used the Emazys Z200 for a couple of years now.I…

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Photovoltaic Ground Fault Finder

What is a solar photovoltaic ground fault? According to the Photovoltaic Systems textbook (published by NJATC), a solar PV ground fault is “the condition of current flowing through the grounding conductor.”The cause of this very undesirable current flow is an…

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String Test Application Note

An application note to support field testing of photovoltaic arrays using the emazys Z200 PV Analyzer. Introduction This application note is based on the combined research and development efforts established by Dr. Ronni Basu, Dr. Daniel Hamkens, and Dr….

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Wire Tracer & Circuit Tester for solar PV systems

Solar panel amplifier probe and tone generator The Z200 PV Analyzer may be used much like a conventional cable tester for PV modules. The Z200 can generate frequencies that can be picked up and heard, with a handheld pickup across…

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Impact of Isolation Resistance Faults in Photovoltaics

A photovoltaic (PV) array is an investment that is not subject to wear. This hypothesis might have persisted for years, however, this does not make it tenable: even carefully planned and executed arrays need monitoring, an occasional inspection, and, at…

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LHW Partnership

In late 2018 James Hoare from LHW Partnership contacted us to enquire more information about the new testing options offered by EmaZys. In early 2019 we shipped a Z200 PV Analyzer to James at LHW Partnership, and today James Hoare…

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Potential Induced Degradation Test Method

Photovoltaic PID Testing Potential-induced degradation or PID is a failure mode in solar cells caused by voltage stress on the PID module. PID can affect both crystalline and thin-film modules, to an extent depending on the material and environment. Often manufacturers…

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Photovoltaic Module Test

Z200 PV Analyzer: PV Module Tester The Z200 PV Analyzer may be applied for individual PV module tests and measurements, even when the instrument is connected to the string terminals. The procedure is to first measure a baseline, and then…

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Photovoltaic String Test

Z200 PV Analyzer – string test mode When the String Tester application is activated, the Z200 Analyzer will set up a series of measurements based on deriving the basic solar cell impedance, which gives the user a fast overview of…

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Photovoltaic Disconnect Fault Locater

Photovoltaic disconnect finder The Z200 PV Analyzer is multi-function tester, that can also be used to measure the position of a disconnect in a string of solar PV modules.The instrument will measure the low-frequency impedance of the PV string connected….

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The American Ambassador visits EmaZys Technologies

The American Ambassador, Rufus Gifford, attended as an ‘honored guest’ in connection with the imminent launch of our PV Analyzer Z100. The Ambassador was given a brief introduction to the product, after which the founder of EmaZys, Anders Rand Andersen,…

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Vandel Airbase 75 MWp Solar Power Plant

Today, Energi-Innovation and EmaZys performed a maintenance check at Vandel Airbase 75 MWp Solar Power Plant in Denmark – the largest solar PV system in Scandinavia. The agenda was to check a number of solar PV strings and make sure…

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