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Industrial 3-phase electrical noise filter
An unusual item I found on eBay. It's a bare three phase 10A 240/415V industrial noise filter for use on equipment with variable frequency drives and other devices that could create high frequency electrical noise.
The most notable features are the large common mode suppression choke with three separate windings on a common toroid core, and the groups of star connected filter capacitors that allows the use of standard lower voltage capacitors across the phases by acting like pairs of capacitors in series between each pair of phases.
The discharge resistors are the only bit of this unit I don't care for. An eighth watt resistor typically has a DC voltage rating of 200V DC which is low for this application. Even a 1/4W resistor is only rated for about 250V DC. The phase to phase voltage is likely to be around 415V rms with a peak voltage of around 585V. Even with two resistors in series a rating of at least 300V would be preferable.
The module is also notable for not having any mounting holes, but it does have a bare section at each end that could either be drilled for insulated pillars or perhaps it's designed to go into a housing.
Interesting to look at though. Especially the way they've got the star connected capacitors as opposed to higher voltage ones connected directly between the phases.
This item is strictly for industrial applications. The use of a class X2 capacitor directly to ground does require a reliable ground, as a fault that lost one or two phases could couple significant current to earth/ground via the capacitors.
If you enjoy my videos, you can help support the channel with a dollar or two for coffee, cookies and gadgets, and keep it independent from the quirks of the YouTube algorithm by supporting me on Patreon. This also lets me link to my content on other platforms if YouTube uses the ban-hammer (again!)
I release content for critique and feedback on Patreon as soon as it has been made.
https://www.patreon.com/bigclive
Alternatively, for a single contribution you can use PayPal:-
https://www.paypal.com/paypalme/bigclive
#ElectronicsCreators
...
https://www.youtube.com/watch?v=89CPQtEMiZs
The most notable features are the large common mode suppression choke with three separate windings on a common toroid core, and the groups of star connected filter capacitors that allows the use of standard lower voltage capacitors across the phases by acting like pairs of capacitors in series between each pair of phases.
The discharge resistors are the only bit of this unit I don't care for. An eighth watt resistor typically has a DC voltage rating of 200V DC which is low for this application. Even a 1/4W resistor is only rated for about 250V DC. The phase to phase voltage is likely to be around 415V rms with a peak voltage of around 585V. Even with two resistors in series a rating of at least 300V would be preferable.
The module is also notable for not having any mounting holes, but it does have a bare section at each end that could either be drilled for insulated pillars or perhaps it's designed to go into a housing.
Interesting to look at though. Especially the way they've got the star connected capacitors as opposed to higher voltage ones connected directly between the phases.
This item is strictly for industrial applications. The use of a class X2 capacitor directly to ground does require a reliable ground, as a fault that lost one or two phases could couple significant current to earth/ground via the capacitors.
If you enjoy my videos, you can help support the channel with a dollar or two for coffee, cookies and gadgets, and keep it independent from the quirks of the YouTube algorithm by supporting me on Patreon. This also lets me link to my content on other platforms if YouTube uses the ban-hammer (again!)
I release content for critique and feedback on Patreon as soon as it has been made.
https://www.patreon.com/bigclive
Alternatively, for a single contribution you can use PayPal:-
https://www.paypal.com/paypalme/bigclive
#ElectronicsCreators
...
https://www.youtube.com/watch?v=89CPQtEMiZs
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By bigclivedotcomAn unusual item I found on eBay. It's a bare three phase 10A 240/415V industrial noise filter for use on equipment with variable frequency drives and other devices that could create high frequency electrical noise.
The most notable features are the large common mode suppression choke with three separate windings on a common toroid core, and the groups of star connected filter capacitors that allows the use of standard lower voltage capacitors across the phases by acting like pairs of capacitors in series between each pair of phases.
The discharge resistors are the only bit of this unit I don't care for. An eighth watt resistor typically has a DC voltage rating of 200V DC which is low for this application. Even a 1/4W resistor is only rated for about 250V DC. The phase to phase voltage is likely to be around 415V rms with a peak voltage of around 585V. Even with two resistors in series a rating of at least 300V would be preferable.
The module is also notable for not having any mounting holes, but it does have a bare section at each end that could either be drilled for insulated pillars or perhaps it's designed to go into a housing.
Interesting to look at though. Especially the way they've got the star connected capacitors as opposed to higher voltage ones connected directly between the phases.
This item is strictly for industrial applications. The use of a class X2 capacitor directly to ground does require a reliable ground, as a fault that lost one or two phases could couple significant current to earth/ground via the capacitors.
If you enjoy my videos, you can help support the channel with a dollar or two for coffee, cookies and gadgets, and keep it independent from the quirks of the YouTube algorithm by supporting me on Patreon. This also lets me link to my content on other platforms if YouTube uses the ban-hammer (again!)
I release content for critique and feedback on Patreon as soon as it has been made.
https://www.patreon.com/bigclive
Alternatively, for a single contribution you can use PayPal:-
https://www.paypal.com/paypalme/bigclive
#ElectronicsCreators
...
https://www.youtube.com/watch?v=89CPQtEMiZs
The most notable features are the large common mode suppression choke with three separate windings on a common toroid core, and the groups of star connected filter capacitors that allows the use of standard lower voltage capacitors across the phases by acting like pairs of capacitors in series between each pair of phases.
The discharge resistors are the only bit of this unit I don't care for. An eighth watt resistor typically has a DC voltage rating of 200V DC which is low for this application. Even a 1/4W resistor is only rated for about 250V DC. The phase to phase voltage is likely to be around 415V rms with a peak voltage of around 585V. Even with two resistors in series a rating of at least 300V would be preferable.
The module is also notable for not having any mounting holes, but it does have a bare section at each end that could either be drilled for insulated pillars or perhaps it's designed to go into a housing.
Interesting to look at though. Especially the way they've got the star connected capacitors as opposed to higher voltage ones connected directly between the phases.
This item is strictly for industrial applications. The use of a class X2 capacitor directly to ground does require a reliable ground, as a fault that lost one or two phases could couple significant current to earth/ground via the capacitors.
If you enjoy my videos, you can help support the channel with a dollar or two for coffee, cookies and gadgets, and keep it independent from the quirks of the YouTube algorithm by supporting me on Patreon. This also lets me link to my content on other platforms if YouTube uses the ban-hammer (again!)
I release content for critique and feedback on Patreon as soon as it has been made.
https://www.patreon.com/bigclive
Alternatively, for a single contribution you can use PayPal:-
https://www.paypal.com/paypalme/bigclive
#ElectronicsCreators
...
https://www.youtube.com/watch?v=89CPQtEMiZs