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- At present, the SA380-IT measures the degree of isolation between circuit circuits as a standing voltage between the two circuits being measured. A table (at the end of this document) must be utilised to determine the possible level of insulation resistance.
- Connecting both B12 and XB12 circuits in the standard arrangement adds the ability to monitor nominal circuit voltage and isolation from earth. This is important as a low nominal circuit voltage may mask an inter-circuit isolation fault due to lower than expected standing voltages.
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Device misoperation is also possible due to cross-coupling of circuits that are where the fault path is not via an earth connection.
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Use the look up table below to convert the voltage present on wither either the "ISO 1" or "ISO 2" channels into a worst-case level of inter-circuit isolation.
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