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Type B time delayed rcd

Baldyhugh
Hi


As part of a job I’m currently on I have connected a single phase supply to a Danfoss variable speed inverter drive. I wasn’t aware that this would be part of the job but there you go. Anyway I connected it and powered it up and a few seconds later it tripped the rcd. I informed the installers of the drive incase it was faulty but they said that it’s probably the wrong type of rcd. I researched the spec of the drive which says that I need a type B time delayed rcd. I spoke to Hager technical dept as these are the boards I have used and they said that they only do a 4 pole B type but not time delayed. There is an A type time delayed available which is double pole but they didn’t think that it would work as it doesn’t monitor dc which the B type does. These different types are new to me so would anyone have experience of them to offer some advice?


Thanks
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  • 0
    This is one of those occasions when detailed installation instructions are really required, without getting the equipment up and running you cannot take any measurements to determine what leakage there is under normal conditions.


    Before you know where you are you can spend quite a bit of time trying to fix an issue that isn’t really yours.


    Andy Betteridge
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  • 0
    This is one of those occasions when detailed installation instructions are really required, without getting the equipment up and running you cannot take any measurements to determine what leakage there is under normal conditions.


    Before you know where you are you can spend quite a bit of time trying to fix an issue that isn’t really yours.


    Andy Betteridge
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