Spare parts management and historical model replacement
1. Key spare parts list
Component Part Number Description
Boosting module (CBS 310 matching) 9 1861 00 100 has gradually been replaced by CBS 305
Boosting module (CBS 320 matching) 9 1861 00 101 can still be ordered
CT (800A grade) BE 21331-001 only CBS 310
CT (800A grade, universal) BE 21433-001 CBS 310/320 universal
CT (2400A grade, universal) BE 21432-001 high-capacity unit
2. Precautions for replacing CBS 310 with CBS 305
CBS 305 has a smaller size and lower cost, but its output parameters are consistent with CBS 310 (90-120Vdc/7.2-9.6A).
The definition of terminal blocks may vary slightly, and it is necessary to check the CBS 305 manual before replacing them.
If the matching CT is BE 21331-001, it can continue to be used, but it needs to be confirmed that the secondary turns match (still 209 turns).
3. Maintenance cycle recommendations
Check the CT winding insulation and fastener torque every two years.
Perform bench testing every five years or after fault conditions to verify the boost function.
