V-type / Z-type / single-arm panto / Faiveley / Ausbreck
Panto testing began on 2 May 1977 with W2 546.
Z1, Z2, Z3, A1 & B1 classes were converted to pantos between 1987 & 1997.
The operational W-types were also converted at some point.
Melbourne trams built after 1985 (A2, B2, C1, C2, D1, D2, E1 & E2 classes) were built with pantos.
The Melbourne tram network all use Z-type pantos with the exception of those in the heritage fleet.