RFI noise on the mains supply - Problems with fan controller?

fartoblue

fartoblue

Well-Known Member
I think I may be getting RFI noise on the mains supply caused by Ballasts (digital) as my digital fan controller is playing up even the new replacement.

All the light display flickers very fast between numbers when in use and is very hard to adjust as the slightest touch on the button jumps the setting in large increments, also the fans will not run at tick over speed unless it is above 70%, So the fans (intake and out take) are off until the room goes over the desired temperature then they come on 100%.

Is there a FIX? Do those Ferrite rings work?

Thanks
Blue
 
hotrodharley

hotrodharley

Well-Known Member
fartoblue said:
How do I ground? It is an outbuilding with its own ring main.
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The panel itself should be grounded to an actual ground rod. I'm not an electrician. Just echoing my growing buddy who is. And according to him the grounding rod should be at least 8'. Available at electric supply houses. Hopefully an actual electrician comes along.

Then each outlet needs to be adequately grounded.
 
fartoblue

fartoblue

Well-Known Member
hotrodharley said:
The panel itself should be grounded to an actual ground rod. I'm not an electrician. Just echoing my growing buddy who is. And according to him the grounding rod should be at least 8'. Available at electric supply houses. Hopefully an actual electrician comes along.

Then each outlet needs to be adequately grounded.
Click to expand...
Mmm I think this would help as the outbuilding is made from Timber.
 
hotrodharley

hotrodharley

Well-Known Member
zzyx said:
please define
Click to expand...
WHAT IS RFI (EMI) / EMC?
EMI (Electromagnetic Interference) is also called RFI (Radio Frequency Interference). Although the terms EMI and RFI are often used interchangeably, EMI is actually any frequency of electrical noise, whereas RFI is a specific subset of electrical noise on the EMI spectrum. RFI is a disturbance that affects an electrical circuit due to either electromagnetic conduction or electromagnetic radiation emitted from an external source. The disturbance may interrupt, obstruct, degrade or limit the effective performance of the circuit. The source may be any object, artificial or natural, that carries rapidly changing electrical currents, such as an electrical circuit or the Sun. There are two types of RFI. Conducted RFI is unwanted high frequencies that ride on the AC wave form. Radiated RFI is emitted through the air. There are many pieces of equipment that can generate RFI, variable frequency drives included.

https://palomar-engineers.com/rfi-kits/grow-light-rfi-kits

Simple cheap kit with filters
 
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