... -5.0, 8.3, 10, 13, 16, 19, 22, 25, 28, 30, 33, 35, 40, 42, 50, 55 and 60 EF series ... : EF-4539, 16, 20, 25 and 32 ERL series: ERL-28, 35, 39, 42 and 49 ETD series: ETD-29, 34 ... , 44, 49, 54 and 59 EFD-15, 20, 25 and 30 introduction of transformers EC, EE.EI and PQ type high ...