The Analog Inputs and Outputs are isolated to 750V. There is no grounding inside the meter for the analog I/O's. These circuits are isolated from the internals (CPU, etc) of the meter.
Refer to the datasheet https://www.pwrm.com/PRODUCTS/ION7650.
Last Revised: December 3, 2007
Applies To: ION 7500 / 7600, 7550 / 7650
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Legacy KB System (APS) Data: RESL190147 V1.0, Originally authored by KBAdPM on 12/04/2007, Last Edited by KBAdPM on 12/04/2007
Related ranges: ION7550/ION7650, ION7500/ION7600