TDK ZRS-Cores for High-frequency Tube Welding.
ZRS-cores are characterized by a large mass of ferrite material in combination with with deep grooves, that allows to provide a high optimal cooling of the entire core, which in its turn increases the useful lifetime of the ferrite core and improves the quality of the weld.
ZRS-configured ferrite cores are recommended usually for a use in production of through-pass impeders having a protective casings’s outer diameter of up to 32 mm.
ZRS-Cores List
| Size type (D / L ), mm | Ordering code (*=0 - IPH) (*=1 - IPH2) |
Outer Diameter mm |
L, mm | Number of grooves | Longitudinal Structure | Recommended Inner Diameter of a case , mm |
| ZRS 5/200 | B67410Z0300X69* | 5±0,25 | 200±3,0 | 6 | Integer | 6 |
| ZRS 6/200 | B67410Z0301X69* | 6±0,25 | 200±3,0 | 6 | Integer | 7 |
| ZRS 6,2/200 | B67410Z0336X69* | 6,2±0,25 | 200±3,0 | 6 | Integer | 7 |
| ZRS 7/200 | B67410Z0302X69* | 7±0,25 | 200±3,0 | 6 | Integer | 8 |
| ZRS 7,5/200 | B67410Z0323X69* | 7,5±0,25 | 200±3,0 | 6 | Integer | 9 |
| ZRS 8/200 | B67410Z0303X69* | 8±0,25 | 200±3,0 | 6 | Integer | 9 |
| ZRS 8,5/200 | B67410Z0324X69* | 8,5±0,25 | 200±3,0 | 6 | Integer | 10 |
| ZRS 9/200 | B67410Z0304X69* | 9±0,30 | 200±3,0 | 6 | Integer | 10 |
| ZRS 9,5/200 | B67410Z0325X69* | 9,5±0,30 | 200±3,0 | 6 | Integer | 11 |
| ZRS 10/200 | B67410Z0305X69* | 10±0,325 | 200±3,0 | 8 | Integer | 11 |
| ZRS 10,5/200 | B67410Z0326X69* | 10,5±0,30 | 200±3,0 | 8 | Integer | 12 |
| ZRS 11/200 | B67410Z0306X69* | 11±0,35 | 200±3,0 | 8 | Integer | 12 |
| ZRS 12/200 | B67410Z0307X69* | 12±0,35 | 200±3,0 | 8 | Integer | 13 |
| ZRS 13/200 | B67410Z0308X69* | 13±0,40 | 200±3,0 | 8 | Integer | 14 |
| ZRS 14/200 | B67410Z0309X69* | 14±0,40 | 200±3,0 | 8 | Integer | 15 |
| ZRS 15/200 | B67410Z0310X69* | 15±0,45 | 200±3,0 | 8 | Integer | 16 |
| ZRS 16/200 | B67410Z0311X69* | 16±0,50 | 200±3,0 | 8 | Integer | 17 |
| ZRS 17/200 | B67410Z0312X69* | 17±0,50 | 200±3,0 | 8 | Integer | 18 |
| ZRS 18/200 | B67410Z0313X69* | 18±0,55 | 200±3,0 | 8 | Integer | 19 |
| ZRS 19/200 | B67410Z0314X69* | 19±0,55 | 200±3,0 | 8 | Integer | 20 |
| ZRS 20/200 | B67410Z0315X69* | 20±0,60 | 200±3,0 | 8 | Integer | 21 |
| ZRS 21/200 | B67410Z0316X69* | 21±0,60 | 200±3,0 | 8 | Integer | 22 |
| ZRS 22/200 | B67410Z0317X69* | 22±0,55 | 200±3,0 | 8 | 8 elements* | 23 |
| ZRS 23/200 | B67410Z0318X69* | 23±0,60 | 200±3,0 | 8 | 8 elements* | 24 |
| ZRS 24/200 | B67410Z0319X69* | 24±0,60 | 200±3,0 | 8 | 8 elements* | 25 |
| ZRS 25/200 | B67410Z0320X69* | 25±0,65 | 200±3,0 | 8 | 8 elements* | 26 |
| ZRS 27/200 | B67410Z0322X69* | 27±0,75 | 200±3,0 | 8 | 8 elements* | 28 |
| ZRS 30/200 | B67410Z0321X69* | 30±0,75 | 200±3,0 | 8 | 8 elements* | 31 |
* —ZRS-core consists of 8 toroidal cores which are glued together with a special compound.
When producing impeders, a correct choice of casing inner diameter should be carefully traced. Decreasing of casing inner diameter down to a value that is lesser than a recommended value may hinder a correct insertion of cores.
