This seems all a bit weird. Unless the Phosphorus is used in a coating,
it can have no relation to the ferrite. As many here know, ferrite
"beads" are formed by a sintering process where the powdered metalic
oxide components are subjected to very high pressure and temperatures
that fuse the glassy structure, creating what is essentially a ceramic.
Phosphorus would be vaporized in the mold preheat, much less the actual
sintering process.
If it is a coating, that's another discussion.
- Brent
On 7/10/2024 6:49 PM, John Woodgate wrote:
That would cause the emission of white phosphorus vapour, which burns
in air spontaneously even at room temperature, and is highly toxic.
That is, if there is any red phosphorus there, which I very much doubt.
On 2024-07-10 23:07, Richard Nute wrote:
Hi Christopher:
To put your mind at ease regarding the flammability of the Red
Phosphorus, I suggest you test it. Suspend the core by a wire.
Apply a small flame (1 inch max) from a barbecue starter to the
bottom of the core, and see what happens.
The core should provide a heat sink for the red phosphorus such that
it cannot reach ignition temperature, or exceed the burn time of 94V-0.
I agree with Ted and Ralph.
Good luck, and best regards,
Rich
*From:* Chris <[email protected]>
*Sent:* Wednesday, July 10, 2024 10:40 AM
*To:* [email protected]
*Subject:* [PSES] Using Red Phosphorous ferrite core on a 48VDC motor
Folks,
I need some help to answer this product safety question.
We are using ferrite core T60006-L2025-W380 to supress radiated
emissions on the 48VDC motor cable.
I am concerned about the flamilibility of the Red Phosphorus which is
contained in the Ferrite core.
Any help is appreceiated
Christopher
Nextracker LLC.
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