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We have ups within the load you mentioned of 1.2kw
They used 4 mosfets for the high and low signals
Every two are series together I think
When load more than this for example 3kw and 6kw and 10kw , etc I never seen mosfets for inverter circuit only IGBT’s
I think mosfets are good option in...
I understand, thanks
But just I remember now that when mosfet burned , I disconnected the voltage source and it stopped burning other mosfets
I’ve noticed two big fuses at the entrance if battery source , after the burn I found they are ok , how you think if I had PTC in series with the...
Right, thanks for understanding
This concept look like the series lamp , as the lamp have internal resistance also become big when work
What different between using series lamp and ptc?
Safety test sir, it’s just my expression for the kind of help I need
All what I need is a method to save components from damage after replace because if there is still a fault
Can I use series lamp with the battery source?, or there is a better method?
Hope I’m clear now
Hello everyone
We repair UPS devices, the single phase and three phase , my question regarding the single phase types starting from 700watt capacity to 10kw ups
After replace damaged components, we not sure that everything ok , and we need make safe test, in other words , after replace damaged...
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