A question that is being debated at the moment ...
There is a 2.5mm SWA cable supplying an external supply to an HV Transformer enclosure from a wind Turbine.
In all of these enclosures there is only a bulkhead fitting as the light source controlled by two door micro switches in parallel (two doors, one to access the HV side of the TX and one for the LV side) and NO sockets at all.
Some of these enclosures have sectionalisers within them controlled by Micom relays which prevents all the turbines coming on at once after an outage and causing a GRID dip.... so they are timed.
On our regular checks, sometimes the RCD has tripped (30mA) and it knocks out the control relays. I am sure that a 100mA RCD should be fitted when electronic equipment is used and this may prevent nuisance tripping because it runs the internal batteries down, due to the LED's on the control switches.
Any thoughts anybody if this would help?
Cheers!
There is a 2.5mm SWA cable supplying an external supply to an HV Transformer enclosure from a wind Turbine.
In all of these enclosures there is only a bulkhead fitting as the light source controlled by two door micro switches in parallel (two doors, one to access the HV side of the TX and one for the LV side) and NO sockets at all.
Some of these enclosures have sectionalisers within them controlled by Micom relays which prevents all the turbines coming on at once after an outage and causing a GRID dip.... so they are timed.
On our regular checks, sometimes the RCD has tripped (30mA) and it knocks out the control relays. I am sure that a 100mA RCD should be fitted when electronic equipment is used and this may prevent nuisance tripping because it runs the internal batteries down, due to the LED's on the control switches.
Any thoughts anybody if this would help?
Cheers!