Well, according to document, connecting E6 tram to SCP-R1968 would cause the tram to be supplied with 750V DC and accelerating don't cause voltage drops at all when connected to SCP-R1968. There was a test, where NS 1856 series locomotive and Tatra T6A5 tram were placed on same track and both had their panto raised.The voltages on voltmeters were corresponding to operating voltage of these vehicles (1,5 kV DC for NS 1856 series locomotive and 600V DC for Tatra T6A5 tram) Tatra T6A5 tram was staying behind NS 1856 series. During accelerating of the locomotive no voltage drops were detected on locomotive's and tram's voltmeter and tram was able to accelerate with full power even when accelerating simultaneously with locomotive. The only thing which was found weird is, that vehicles capable of recuperation refused to return energy to panto and wasted all power made by electrodynamic braking in resistors.Sjoerd wrote: ↑20 Mar 2018, 20:46I think it would have worked. The E6 trams from Vienna/Wenen where build for 750V, just like the SG2 metro, but they did run in Amsterdam (600V) before they went into service in Utrecht (750V). Yes, only for testruns (Amsterdam), but it worked.
Only when an E6 did a testrun on the museum tramline, it stalled out; that line has a poor power supply, so accelerating that power-hungry tram made the voltage drop causing the tram to shut down.
It seems, that SCP-R1968 can somehow recognize what vehicle is connected to it and supplies it with correct voltage and type of current. Also it somehow manages to maintain a stable votage level, because accelerating don't cause any voltage drops.