Thread: Laser PSU tripping RCD
-
12-01-2021 #11
One thing is for certain, it won't have been any sort of overload or in-rush current that tripped the RCD as RCDs do not provide any sort of overload protection. That is why they are always used in conjunction with standard MCBs. I'd say that it was almost certainly some residual current escaping through the CPC that has caused this.
Combined Earth Fault and Overload protection is achieved using RCBOs as they are a one stop shop and don't need to be used in conjunction with MCBs.
Problems like this can be difficult to solve without the proper test equipment because you don't know if it is the device that is tripping the RCD on its own or if it is simply pushing the Earth leakage current over the point where the RCD trips. i.e When used on its own it doesn't leak enough current to trip the RCD but when other 'leaky' items are used at the same time then the sum total of the leakages is enough to go over the tripping current. Some things are notorious for leaking currents to their CPCs, dodgy PC power supplies being a big culprit.
Cheers
Thread Information
Users Browsing this Thread
There are currently 1 users browsing this thread. (0 members and 1 guests)
Similar Threads
-
Redsail M500 mini laser engraver needs a new laser tube ???
By shindax in forum Laser Machines & BuildingReplies: 4Last Post: 12-10-2019, 02:21 PM -
VFD Tripping an RCD
By Washout in forum Spindles & Drive MotorsReplies: 13Last Post: 04-09-2017, 02:07 PM -
RCD tripping
By Saracen in forum General ElectronicsReplies: 6Last Post: 22-01-2017, 12:52 AM -
RCD tripping
By motoxy in forum General ElectronicsReplies: 4Last Post: 23-02-2013, 09:36 PM -
VFD (?) tripping RCD
By Jonathan in forum Spindles & Drive MotorsReplies: 22Last Post: 03-12-2011, 08:19 PM
Bookmarks