What is Relay? Relay is an electrical device which makes contact or disconnect between source and load circuit depending on magnetic energy of it. It has a magnetic coil. The coil is energized by a source externally then it makes short path or allows current flow. Removing source from relay coil it makes path open which disconnection two side circuit. … [Read more...] about PV System Common Grounding Problem Solution Using Relay & Opto Coupler
Renewable Energy Technology
PV System Common Grounding Problem Solution Using Optocoupler
1. Why isolation is important: A ground loop may occur when several circuit elements which should be at ground (i.e. 0 Volts), but are not quite at ground, are connected. Generally, a ground is constructed by connecting a wire to a central point which is defined as the "official" ground. Unfortunately, all wires have some resistance which is generally fairly small, but … [Read more...] about PV System Common Grounding Problem Solution Using Optocoupler
