Ferrite ring
Price range: £1.68 through £3.24 inc VAT
Ferrite ring for motor noise suppression
Description
We strongly recommend fitting a ferrite ring to each of the motor leads in order to reduce interference and to improve reliability. These should be used in conjunction with motor suppression capacitors, and in some cases with transient suppressors and catching diodes.
Choosing the appropriate ring size starts with having the right motor cable size. The motor cable should be selected to carry the nominal maximum current that the motor is expected to draw. For example, a 750W motor running on 24V will have a nominal maximum of 750 / 24 = 31A.
We have three sizes of ferrite ring available.
Small – 10mm I/D, suitable for 2 turns of power cable up to 6mm CSA [cross sectional area], which is rated for 53A. Typically fit 2 of this size to a single motor up to 750W [1 per wire].
Medium – 12mm I/D, suitable for 2 turns of power cable up to 10mm CSA, which is rated for 75A. Typically fit 2 of this size to a single motor up to 1500W.
Large – 15mm I/D, suitable for a single pass through of power cable up to 50mm CSA, which is rated for 250A. Typically fit 2 of this size to motors over 3000W.
[Note wire shown is not included]