Seems I made a mistake.

Both 95TS and 96TS use AC motors - the traction drive system is correct, however.

"1995 and 1996 stocks have similar body shells but they use different AC traction control systems. The 1995 stock system is more modern, since the 1996 stock design specification was frozen in 1991.

1996 stock uses three-phase induction motors fed from a single-source inverter using a GTO (gate-turn-off) thyristor derived from those on Class 465 Networker trains. The 1995 stock uses Alstom's "Onix" three-phase Insulated Gate Bipolar Transistor (IGBT) drive."