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Today I aim to measure an RCD or two to determine the DC characteristics.
I;d be very interested in any serious blinding you find - so far my rather unscientific testing has not seen anything other than a rise in threshold of about the same as the DC.
I used a 'jammer' from a bench supply of DC with a fully floating output and a couple of wire wound resistors (one to N, one to E, started with 1k ohms and then reduced to mul;tiples of 100 in parallel) to set the current and with a thousand uF or so of C across the DC supply to act as a fault limiters if something unpleasant came down the NE loop.
The actual threshold of the RCD I found a bit variable from shot to shot even without the jammer, and also needed a bank of resisiors as I do not have a ramp tester.
Today I aim to measure an RCD or two to determine the DC characteristics.
I;d be very interested in any serious blinding you find - so far my rather unscientific testing has not seen anything other than a rise in threshold of about the same as the DC.
I used a 'jammer' from a bench supply of DC with a fully floating output and a couple of wire wound resistors (one to N, one to E, started with 1k ohms and then reduced to mul;tiples of 100 in parallel) to set the current and with a thousand uF or so of C across the DC supply to act as a fault limiters if something unpleasant came down the NE loop.
The actual threshold of the RCD I found a bit variable from shot to shot even without the jammer, and also needed a bank of resisiors as I do not have a ramp tester.
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