Technical Articles

GSES communicates factual, up-to-date and evidence-based information for publication. This includes information on the issues surrounding DC circuit breakers, earthing fundamentals, how to sell solar, and information on isolator enclosures.

DC Isolators: What are the Manufacturer’s Specification Sheets Really Telling You (ONLY VALID UNTIL DATE OF PUBLISHED)

Solar photovoltaic (PV) systems use rotary DC isolators with multiple current and voltage ratings more commonly than DC rated circuit breakers. However, the flexibility of these DC isolators introduces instances of incorrect wiring when the manufacturer’s specifications are misunderstood, resulting in DC isolators being underrated for the PV system installed. This document is written to help with interpreting the product manufacturer’s data in the correct selection of DC isolators to meet requirements set out by the Australian Standards.

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