Right back at you! We seem to have made contacts in different markeds/industries. What is the most important here, is the human factor. Interesting stuff happens when you talk with people about your passions, some times it even opens doors :)
Great content sir! I am currently working on a faulty 7 yo Masterpact (NW20 HADCD-PV) which caused big damages on a PV inverter while igniting fire on the DC side. I try to figure out what could have happened, thanks to your video I now can tell that for some reasons my Masterpact ended up open during the incident (or at least not closed...). I was extremely curious when you talked about the "thermistor" at 6:09 but you didn't say more about this sensor. Are you sure there is one? It don't find anything inside Schneider documentation. Is it a common feature on Masterpacts? Where is it connected? Does it trip the Masterpact? What is the threshold? Thank you very much for your help.
Thermistor control from the adjusted tripping curves. The wires looks like they go the tripping/release actuator? It's been a while since I did this video, so memory is not 100% :)
@@KaizerPowerElectronicsDk Oh I see, so this wire is the trip output to the opening coil? This is not a thermistor input that would monitor the Masterpact temperature? As I understand the Masterpact, there is no actual "thermal trip" based on some bimetallic strip, they just call "thermal" the current threshold based on an time inverse curve to protect from overload.
@@RippleMks yeah I agree with you, its based on measurements and time, where the tripping curve actually is defined. So a thermistor would make no sense. I should not have said thermistor, but current evaluation module output to tripping coil.
It is not an opamp. It is a famous TL431 voltage reference/comparer in a ceramic DIP package! Personally, I would have desoldered it and kept as a collectible artifact because of a very unusual package for this very common chip.
wow that is a beast, you do find some very interesting things to take to bits!
Right back at you! We seem to have made contacts in different markeds/industries. What is the most important here, is the human factor. Interesting stuff happens when you talk with people about your passions, some times it even opens doors :)
Thank you. Really enjoyed.
It is me that is honoured, that you find it enjoyable :)
No better way to receive beer than off the end of a monster circuit breaker catapult!
Slightly shaken, I was not stirred!
Good work, thanks 👍!
Simply Superb
Thank you very much.
Great content sir! I am currently working on a faulty 7 yo Masterpact (NW20 HADCD-PV) which caused big damages on a PV inverter while igniting fire on the DC side. I try to figure out what could have happened, thanks to your video I now can tell that for some reasons my Masterpact ended up open during the incident (or at least not closed...). I was extremely curious when you talked about the "thermistor" at 6:09 but you didn't say more about this sensor. Are you sure there is one? It don't find anything inside Schneider documentation. Is it a common feature on Masterpacts? Where is it connected? Does it trip the Masterpact? What is the threshold? Thank you very much for your help.
Thermistor control from the adjusted tripping curves. The wires looks like they go the tripping/release actuator? It's been a while since I did this video, so memory is not 100% :)
@@KaizerPowerElectronicsDk Oh I see, so this wire is the trip output to the opening coil? This is not a thermistor input that would monitor the Masterpact temperature? As I understand the Masterpact, there is no actual "thermal trip" based on some bimetallic strip, they just call "thermal" the current threshold based on an time inverse curve to protect from overload.
@@RippleMks yeah I agree with you, its based on measurements and time, where the tripping curve actually is defined. So a thermistor would make no sense. I should not have said thermistor, but current evaluation module output to tripping coil.
Schneider Electric's M-series of masterpact switches is now an old and discontinued model
I found your vid very interesting, my company specializes in switchgear, 😊
Did you watch the video at the company Christmas party? ;)
How I Measure CT For Circut Breaker
It is not an opamp. It is a famous TL431 voltage reference/comparer in a ceramic DIP package! Personally, I would have desoldered it and kept as a collectible artifact because of a very unusual package for this very common chip.
Can be used as a cheap voltage comparator . Although I doubt they use it for that in such an expensive piece of kit
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