Guru
Joined: 11/02/2018
Location: AustraliaPosts: 2398
| Posted: 07:59am 16 Jun 2024 |
I see the problem. Looked up Jaycar NZ and their range has shrunk.
Altronics has some toroids with 2 x 25V secondaries that would do.
The other option would be 2 x 24V at each end with the secondaries in series. A bit messy and more expensive.
Worth persisting with the 30V ones until you are certain the launch amps won't work with the measured line resistance.
Perhaps check how many pairs are are available to parallel up. I have simply been assuming 2 but there may be more.
Also if the distances are long enough they may have used Exchange cables which are 0.4 sqmm, so half the resistance per pair.