[Ikeda, Washimi, Takahashi]
We applied new cabling to the primary coils for the BF damper. The lead wires for V2, V3, and H3 coils were re-cabled on the side of the coil bobbin with the PEEK plate. Additionally, the lead wires of the coils were fixed on the coil bobbins with an adhesive (TRA-BOND 2116).
[Washimi, Takahashi]
We checked the resistance and inductance of the LVDT coils for the BF damper at the feedthrough flange with the flip cable.
| Before O4a | This time | |
| 1 BF DPCH 1-6 2-7 3-8 4-9 5-G |
25.5Ω/1.066mH 26.2Ω/1.066mH 25.6Ω/1.068mH OL
|
27.8Ω/1.066mH 29.5Ω/1.064mH 27.6Ω/1.068mH OL ~40MΩ |
| 2 BF DPCV 1-6 2-7 3-8 4-9 5-G |
26.2Ω/1.062mH 24.9Ω/1.067mH 24.3Ω/1.061mH OL
|
29.4Ω/1.061mH 29.2Ω/1.095mH 28.6Ω/1.062mH ~70MΩ ~20MΩ |
| 3 BF DSCH 1-6 2-7 3-8 4-9 5-G |
24.5Ω/8.56mH 24.3Ω/8.53mH 23.6Ω/8.56mH OL
|
27.9Ω/8.55mH 31.1Ω/8.53mH 27.0Ω/8.54mH ~50MΩ ~20MΩ |
| 4 BF DSCV 1-6 2-7 3-8 4-9 5-G |
24.2Ω/8.53mH 24.2Ω/8.53mH 23.4Ω/8.52mH OL
|
27.6Ω/8.53mH 34.8Ω/8.52mH 26.6Ω/8.54mH ~50MΩ ~20MΩ |
We found the breakout adapter with the lead cable had a resistance of 2~4Ω.
