25-11-2015, 04:08 PM
What I have tried to do is to highlight the bits that are most useful to us without the engineering bits that could confuse some users here whom are not used to reading engineering papers unlike us more experienced folk can.
The other useful bit I have tried to give is an example where the secondary of the isolating transformer finds its own virtual center tap when a live side circuit with a bridge rectifier is involved even though there is no physical electrical connection to it.
The OB truck set-up could be used to localize the RCCD operation to a workshop that is distant from the house RCCD but you would need a second isolating transformer with a floating secondary for the item under test.
Tripping of the house RCCD it very rare in my workshop because I just take care to avoid it happening. My set-up has an isolating transformer with a Variac always connected to the floating secondary so that it can be used as an isolated variable AC supply.
The other useful bit I have tried to give is an example where the secondary of the isolating transformer finds its own virtual center tap when a live side circuit with a bridge rectifier is involved even though there is no physical electrical connection to it.
The OB truck set-up could be used to localize the RCCD operation to a workshop that is distant from the house RCCD but you would need a second isolating transformer with a floating secondary for the item under test.
Tripping of the house RCCD it very rare in my workshop because I just take care to avoid it happening. My set-up has an isolating transformer with a Variac always connected to the floating secondary so that it can be used as an isolated variable AC supply.
