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Reduced GFCI sensitivity
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A Zoe ZE50 was occasionally tripping out the GFCI. I think it was set too sensitive so I have increased the ADC threshold for a trip
It now takes around 40ms to detect a 25mA ground current  which is still fine.
All working well otherwise and has been in constant use for the past couple years
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fotherja authored Jan 11, 2024
1 parent c718295 commit 3d65980
Showing 1 changed file with 3 additions and 2 deletions.
5 changes: 3 additions & 2 deletions EV_Charger.ino
Original file line number Diff line number Diff line change
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* 5) START CHARGE GFCI TEST FAIL
*
* Changes:
* - 4/5/2022 - Added 4 second WDT reset
* - 4/5/2022 - Added 4 second WDT reset
* - 22/5/2022 - Fixed bug in Timer interrupt which alternates the ADC channels
* - changed required successive faults from 100 to 10
* - 8/1/2024 - Increased GFCI_FAULT_THRESHOLD from 250 -> 300 because of occasional trips occuring with a Renault Zoe ZE50 2020
*
*/

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#define NEG_12V_MAX 327
#define NEG_12V_MIN 245

#define GFCI_FAULT_THRESHOLD 250 // This is the ADC value that beyond which trips our GFCI detection system
#define GFCI_FAULT_THRESHOLD 300 // This is the ADC value that beyond which trips our GFCI detection system
#define GFCI_FAULT_ABORT_THRESHOLD 500 // If it's taking longer than this to test our GFCI it's clearly failing to work
#define FAULT_COUNT_THRESHOLD 10 // We have to have 10 successive trivial faults to trip out.

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