>>131870
Nice machine. Kinda resembles EP20. If only it had 3o-3o formula, clever people claimed it is still better for rapid locomotive.

More like NEWFAG dragon, heheheheh

Calling my Polish skills useless would be an upgrade, but I did gather from the PDF brochure in the Wiki article's ref. 2 that the Dragon is a Co-Co (same as your 3o-3o, I think) with AC motors.

>>131881
Um-m-m... wasn't it obvious from the photo? The funny thing is that 6-axle EU freight locomotive weighs almost 10 tons less than our 6-axle passenger locomotive. Still, EP20 has III class traction drive with two-level compensation so should perform well on all speeds up to 200 km/h.

>>131883 -- Sadly I am very far from skilled enough to tell from a photo which axles are powered and with what.

As the resident dragon, I am amused. For an electric though, I hope it doesn't spit out fire!

>>131896
Quite logically to assume that all axles are powered on the locomotive of that weight. Especially when the only example of non-motorized axle within single frame of the truck I know is your ES44C4. Even the idea of that sounds quite strange.
For AC motors it can be just lucky guess. There aren't many manufacturers now who produce electric locomotives with DC motors, and certainly not in EU. RZD especially likes to squeeze all the juice from the concept of a locomotive with DC motors, but they realize that if you want to get really advanced loco you have to order locomotive with AC motors. Can even guess it is asynchronous motors because synchronous motors aren't that useful on a railway transport.

Damn... Posted here so many photos of EP20 it looks like we are talking about it. I just love this glorious machine.
Better will post a photo of the Dragon FTGJ.

kek

>>131902 -- Actually, the brochure was overflowing with clues, beginning with a word that looked like 'asynchronous'. Plus, there were block diagrams of the power system and oscillographs of the sinewave form changing with frequency.

>>131914
Well, since Polish is some kind of far relative of Russian I think I can translate other parameters (at least which aren't already obvious):
Maximum speed in service - 120 km/h,
Length by buffers - 20250-20330 mm,
Width - 3000 mm,
Height - 4325 mm,
Wheel diameter - 1250 mm,
Type of traction motors - STX500-4A or ABB AMXL450,
Starting traction effort - 310 kN,
Short-time mode (?) traction effort - 275 kN,
Maximum dynamic braking effort - 200 kN,
Maximum traction motor current - 300 A.
Also it seems like the battery is designed to feed the traction motors for short time.

And by the way... What the hell? Looks like Dragon's styling is popular in Ukraine.

>>131932
...well, technically in South Korea too because they have designed HRCS2.

> Short-time mode

If I recall correctly, this would be the maximum effort a locomotive can sustain for one hour before the traction motors become too hot.

>>131961
Often yes, but on some traction drives time which they can work safely in this mode is sacrificed in order to provide more power. Like on 2ES10. Its short-time mode lasts 15 minutes but the power increase is 100 kW (10%) per motor.

I believe that should be the case with most or all motors, though this is the first fifteen-minute rating I recall having seen mentioned anywhere.

>>131964
Well, I have also heard a half-hour mode for some Russian switchers. Of course, it is not about power, traction motors can't have more power than the amount provided by the prime mover. IIRC it is unfavorable mode of the collector motors in which they provide increased torque at low RPM which can be useful for a shunting locomotive but generate more heat than their cooling system can handle protractedly.