AC 115/250V 20A CW4L2-20A-S Noise Suppressor Power EMI Filter
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My Pioneer heat pump is extremely effective at blocking EMI and RFI, thanks to this product. Quite well made, hermetically sealed, very solid, good quality hardware, easy to install, and very effective at blocking EMI and RFI. There were things I didn't like about it. There is nothing! There is no doubt that this filter works well. The Pioneer 24K BTU heat pump has just been installed. In spite of the heat pump's excellent performance, it also produced a fair amount of EMI (electromagnetic interference) in the wiring of the house as well as the wiring between the inside and the outside units The heat pump units are located outside. A Tri-Metal is what I used An electric field meter can be used to find out if dirty electricity is present in the household From the electrical panel to the compressor outside, electrical pulsations could be heard from the wiring everywhere. The entire job took less than 15 minutes to complete. I simply installed another electrical cutout box beside the previous outside compressor cutout box, removed the guts, mounted the filter in series with the 240v mains, covered the box to prevent curious fingers, and my work was done. (Use #12 Romex wire with crimp ring terminals on the filter, then just wire nut the filter in series with the AC mains. )There was no longer any measurable EMI in the house, either from the mains wiring under the floor or from the wiring between the walls and floors A cable is connected from the inside to the outside of the Additionally, there was no interference detectable at my amateur radio station which is only 12 feet away from the transmitter. It's a real problem cleaning up dirty electricity. highly sensitive to dirty electricity, and my wife is also highly sensitive to it. You may wish to search the term "dirty electricity" on the internet. Be prepared for a pleasant surprise! Electrical equipment that is energy efficient or energy saving pulses power on and off a lot The wiring of the AC household is superimposed with pulses when it is turned off. For a unit to be effective, an effective way to stop these pulses must be at the source. This unit does an excellent job at doing this. Lastly, I performed EMI measurements on the electrical mains from the power company before and after the heat pump installation with a "GreenWave" broadband meter. "Dirt" or undesirable pulses are detected in the incoming wiring with this unit. The voltage on one line (L1) was about 103 mV, and the voltage on the other (L2) was about 198 mV. When space is occupied by humans, it is recommended to keep both lines at or below 100mV (millivolts). L1 and L2 went to 1400+ mV and 1500+ mV, respectively, when the heat pump first turned on. It's not good at all. As soon as the EMI filter was installed, both lines returned to preexisting conditions There are several levels of heat pump installation. In short, it does what it is supposed to do. Since I or my wife are no longer bothered by the heat pump, we don't worry about it. A good one is worth buying. Worked like a charm!.
Spindle with a power of 2kW connected to a 220V supply for CNC router. When I didn't have this filter, I could hardly get my VFD up and running Whenever I was more than two meters away from a CNC controller, I saw it go into danger mode and stop whatever I was doing. I was also hit by the EMI noise from the thing and I broke a limit switch! The time has passed and it is now nearly 2 a. m. In the end, I have a machine I could probably run until the sun burns out for only $17. As a measure I've added some ferrite chokes to the mix, but I truly believe that this bad boy is the one doing most of the work. Make sure it is grounded properly if you plan to use it with a VFD (not at the VFD's ground, but at the star ground point where you plan to plug it in). This thing turned my machine from a scrap heap to a scrap heap generator, but obviously results will vary based on your own setup. I intended it to be like that.
A Variable Frequency Drive (VFD) converted a 220V single phase power supply to a 3 phase power supply on my milling machine. In addition to these filters, I bought some inline ring type filters to limit nearby electrical noise that could affect nearby computers and CNC controllers. I think the price was fair, and it seems to do the job well.
Having a K40 chinese laser for over a year is the best investment I have ever made. When I turned on or off another device, or when the laser hung, resetting or lost connection to the computer, this was one of the most bothersome issues for me. The problems went away as soon as I installed this filter between the mains connector and the power supply.
This filter is nicely designed and has easy-to-read markings on the outside. It is durable enough to be used in the field in the real world. My control panel tripped a breaker because it was too close to both a 1000 amp welder and a breaker. I have not had any problems with the breakers tripping since I installed the filter in my control box.
I have so far not encountered any problems, everything seems to be working as it should.
A tread mill was causing EMI interference with my internet router, so I was in need of a noise filter. There seems to be no problem with it. It is not recommended that you turn the nuts on the threaded connectors towards the can or chassis. The two nuts, rather than the can, should be tightened against each other.
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