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Alternative Power
mygoggie's venture in the world of hybrid electrical systems
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<blockquote data-quote="mygoggie" data-source="post: 1109623" data-attributes="member: 18916"><p>I have edited the <a href="https://www.avforums.co.za/threads/mygoggies-venture-in-the-world-of-hybrid-electrical-systems.101136/" target="_blank">original post</a> to include some SANS 10142-1 requirements.</p><p></p><p>Of importance to me is the bonding of the inverter's N+E using a relay and then specifically to SANS 10142-1 §7.12.3.1.3 which reads as follows:</p><p></p><p><em>7.12.3.1.3 Where alternative supplies are installed remotely from the</em></p><p><em>installation, or from one another, and where it is not possible to make use of</em></p><p><em>a single neutral bar or neutral conductor which is earthed, the neutral of each</em></p><p><em>unit shall be earthed at the unit and these points shall be bonded to the</em></p><p><em>consumer's earth terminal (see 6.12.4). The supply from each unit which</em></p><p><em>supplies the installation or part of the installation, shall be switched by means</em></p><p><em>of a switch that breaks all live conductors operating substantially together (see</em></p><p><em>figures P.2 and P.4), to disconnect the earthed neutral point from the</em></p><p><em>installation neutral when the alternative supply is not connected (see also</em></p><p><em>6.1.6).</em></p><p><em></em></p><p><em>NOTE Where four pole switching is implemented, consideration should be given to use</em></p><p><em>overlapping neutral switching devices.</em></p><p></p><p>I will therefore change my design to accommodate switching the bonded N+E on the output side of each inverter.</p></blockquote><p></p>
[QUOTE="mygoggie, post: 1109623, member: 18916"] I have edited the [URL='https://www.avforums.co.za/threads/mygoggies-venture-in-the-world-of-hybrid-electrical-systems.101136/']original post[/URL] to include some SANS 10142-1 requirements. Of importance to me is the bonding of the inverter's N+E using a relay and then specifically to SANS 10142-1 §7.12.3.1.3 which reads as follows: [I]7.12.3.1.3 Where alternative supplies are installed remotely from the installation, or from one another, and where it is not possible to make use of a single neutral bar or neutral conductor which is earthed, the neutral of each unit shall be earthed at the unit and these points shall be bonded to the consumer's earth terminal (see 6.12.4). The supply from each unit which supplies the installation or part of the installation, shall be switched by means of a switch that breaks all live conductors operating substantially together (see figures P.2 and P.4), to disconnect the earthed neutral point from the installation neutral when the alternative supply is not connected (see also 6.1.6). NOTE Where four pole switching is implemented, consideration should be given to use overlapping neutral switching devices.[/I] I will therefore change my design to accommodate switching the bonded N+E on the output side of each inverter. [/QUOTE]
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mygoggie's venture in the world of hybrid electrical systems
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