Részletes keresés

mm1234 Creative Commons License 2015.07.25 0 0 10
In text is one mistake - of course in EN57 EMU current is 170 A (normal acceleration) or 135 A (low). With 370 A it's should be a rocket ;)
mm1234 Creative Commons License 2015.07.24 0 0 9

Another notice for uploaded book: the compressor, which is described in, is British compressor from EU06. Polish built locos have Polish compressor, but the electric motor is the same.


In Poland 3 kV DC system, distances between substations are shorter than in 25 kV AC (15-28 km). Shorter, because quite low voltage need high current to send the same power. High current gives high voltage (and energy) losses in catenary resistant, and small distance between substantions limit this losses to acceptable level. Between two areas of supply is special insulated gap in supply (upper) and traction wire. The voltages in two sections can be different. For example, on one section is train which start and have high current - and in section is 2,8 kV, and in second section, for example empty, or with free riding or braking train - full 3,2 kV (voltage is slightly higher than nominal for fight with decreasing it under high current of accelerating trains, in stations can be 3,6 kV). And when train with high current ride by then insulated gap, this difference of voltages make sparks and electric arc on pantograph and catenary. The current "wants to go" by one way. It's

make high wear of wire and surface of pantograph. In some conditions, the arc can melt and burn the wire, with break it, which make big damage of catenary. This is a reason. Of course, if driver forget We8, in 99% only protection relays turn off the circuits on loco, but situation isn't good for equipment.


In Poland driver should turn off traction current, and, in winter turn off the electric heating - by main contactor in loco. In locos that have compressor on 3 kV (f.e. ET22, EP09, ET21) turning off compressor is recommended. EU07 have compressors supplied on 110V side. Traction motor fans may be turn on. I think that in 25 kV AC you should turn off all circuit and traction transformer, because if not, is possible an "phase mismatch" in circuit with bad consequences for transformer and substations.


Traction motor fans have in Polish locos  2 functions: driving the fan and convert 3 kV to 110V for control circuits, charging battery and lighting. In some locos is a 3kV motor and small 110V generator (f.e. In EP09 motor drive generator by belt), in some, that EU07 and ET22 motor and generator is in one machine with two collectors. In 07 110V generator supply in addition compressor. In this machine is special transformer. It not convert the voltage, but in special connection to machines windings protects the machine, when is boundary between substations, or when pantograph have bad contact with catenary (vibrations etc.). Without transformer, in this state, 3 kV motor can begin the work as a generator, and make fire on collector. For example, EN57 EMU has 2 machine inverters, one converts 3 kV to 110V (without fan, EN57 traction motors has natural cooling by fans on it's rotors.), and second, smaller, converts 110V to 220V/500 Hz to luminescent interior light. For last years, in some rolling stock machine inverters are changed for electronic, silent inverters. In EN57 it's simple, in 07 not. F.e. EP07-1049 has electronic inverter 3kV/110V, 400V AC 3-phase, and additional AC traction motor fans. With We8 machine inverters can be turned on, sometimes protection relays can operate. Electronic inverters don't like We8 places, and after it sometimes need reset.


Driving loco on 3 kV DC is quite normal. Driver should remember, that resistant positions are only for accelerating, not for long ride, because resistors can overheat, and it's not economic. On resistant positions light special yellow control lamp, which inform driver about it. On non-resistant and shunt positions we can go long time. On locos driver adjust position manually, on EMU's is specific control. In EN57, EN71, ED72 main controller has only few positions: 0, manoeuvre, series, series-parallel, shunt 1, 2, 3. Real connections is maked by pneumatic-driven camshaft in electric compartment under motor car. Manoeuvre= all resistors applied, only for station manoeuvre, low speed. When driver turn controller on higher position, camshaft automatically make run to selected non-resistant position, and current relay allow camshaft to turn on next position when current is lower than 370 A (or lower when driver select "low acceleration mode", when is wheel slip, in rainy days). Turning position down is impossible, because camshaft  turn only in one direction. Driver should turn to 0, and select new position. Camshaft fast turn to 0, ant to new selected position.


Links for You (unfortunately Polish only, but with some clear pictures)


(3kV catenary)


("We8" question)


Great site for railfans, especially part "Kolej" - kolej


Description of EU07, with photos of some interior devices


Best regards!

Railroadman Creative Commons License 2015.07.22 0 0 8



No problem!


Thank You very much, they are really giant, detailed operational books. It's very nice, contain all attributes, datas, dimensions from every equipments. Tractive effort graph very interesting too!


It's very-very sad, V43 series hasn't exist same full detailed document to be scanned, and free acces to everyone.


Thank You for a description of the automatic notching, auto-acceleration system, I read about it, with translator, but wasn't completely understandable. Unfortunately, translating from Polish-Hungarian languages, and back largely erroneous, incorrect, incomprehensible. Now I understand, why not being used.



In this forum, hasn't private sending option, only e-mail sending possible (if the user is authorized). My address was inactive, now lives again.

But in my opinion, actual theme is not off topic, and I think, foreign-language messages do not conflict with the forum-regulations.


And I have a few questions from Starting-resistance locomotives driving technique, and 3kV DC= system (for example, procedures than substation boundarys - sign We8).

We talked about it an other topic, called Vasútgépészek ide! (Railway engineers here!), but for me specifically the Polish procedures might be interested. I know what to do (closing traction by main wheel, and bypass/field weakers off), but I don't know, why. 

As You can know, in our 25kV AC system exist two type phase boundary, indicated similar with Polish signs, but different procedures (tc.-motor fans, compressor, main breaker must turn off).


And if You have any question from V43 series, I know, I write about it (So sorry, write at my earlier post, I was very tired).

Előzmény: mm1234 (7)
mm1234 Creative Commons License 2015.07.18 0 0 7

Sorry for some off-topic, but I can't find private message option.


Dear Railroadman, with some delay, I upload material about EU07.


It's only one notice: In book is described device called "samoczynny rozruch", "przekaŸnik samoczynnego rozruchu" - "automatic start, automatic notching" "automatic notch relay". This was special device in EU06, which controlled traction current and automatically notches, position by position, of course holding adjusted current. The driver was turn controller to first position, and main circuit is connected, and when the driver adjust main controller on 4 or higher position, he had possibility to adjust in special regulator max. traction current. After this, driver was adjusting main controller to, for example, last "series" position (without resistors), and device automatically operated the contators and made notching. Of course driver could make notching manually, if would. Unfortunately, relay which controlled it, need special ferromagnetic material. Polish industry could not produce it good, and device didn't operate properly, and early made decision about remove this device from locos, and not install it in new built locos, and all locos have manual control.


If I have opportunity, I want link you great Soviet handbook for steam and diesel loco drivers - in my opinion excellent (I can't believe, that they had so clear and modern handbooks in 50 and 60's).


For this two position you need reader for DJVU format.

Railroadman Creative Commons License 2015.06.25 0 0 6


I,m sorry for the late answers!

I had so many things to do.



I love and admire all the classic locomotives.

Sad, and unfortunately, but I have knowledges from Polish classic locomotives from videos/movies only, and of course, from the legendary EU07-424 simulator.


As I look with '41s, and usually freight trains rarely exceed 300-400A, so starting-resistance ventilators not work on high pitch. And in many movies drivers use just serial nothces only, and the all field weakeings. The train unable reach at 60km/h with 28+6, Current has been less than 300A,  just hold on 56-57, but not changes to parallel notches (I think, maybe to save overhead wire Voltage).


In V43, the main wheel, or master controller operating strongly different, like on most of other locomotives. As I know, this is a Swiss-system, leastwise, the tap changer is a BBC license.

Similar contollers I saw on french locomotives.


V43 master controller has six operating positions, to different tap-change operations.

These are (from left, to right) ++; +; N; -; 0; --.


In my opinion, this video is able to demonstrate the operation of the tap changer.


0:11.: from 0 into N, then + (this position with spring back into N)
0:14.: from + into ++ (this position is locked)
0:23.: back into N, and handling the field weakenings (IRL, before notch reducing - on high voltage
-, fields closure not accepted).
0:29.: back to N, and -, and lock in 0 (nothes run down).
0:41. back to N.
0:46. use +, add nothes up one by one.
1:09. use - (spring back into N), add nothes down one by one.


Position -- with back spring too, this position to emergency closure (traction motor circuit contactors drops off immediately).



Even I recommend this movie.
Well observed the master controller and the weak field use.

Előzmény: mm1234 (5)
mm1234 Creative Commons License 2015.06.19 0 0 5
Try imagine what sound is when start ET41 (=2x EU07) with heavy freight... :)

Situation of 07/08 is quite good, we have some amount of classic 07's, EP07's, EP07's with number over 1000, slightly modernized in 2000's, but with traditional main equipment. Three of 07 was deeply modernized to EU07A series, with AC traction motors and electronic control, 3200 kW, Vmax 160 km/h, and probably this is the end of development of 07. It's interesting, that AC motors have stators from classic DC motors, only with new AC winding and new rotor - thanks it deep changes in bogie was unnecessary. Some months ago PKP Intercity made decision about "main repair" of EP08's, without big changes, and it has good perspective 15 years in service.

I should repeat: It is very nice for me, that person from Hungary interest and admire old, Polish Siódemka.

When I have some free time I think about Drive or another method of upload, and make it. Thanks for your materials (drawing good shows idea of this bearing) and interesting informations about V43 in practice.

Which positions has V43 controller (i think about "wheel" on driver desk, I know that "real" voltage controller in electric compartment has a lot positions)?
Railroadman Creative Commons License 2015.06.18 0 0 4

I haven't read any bad from Siódemkas nowhere, never (except traction motor failures, due high RPM at top speed - which caused birth of the EP07 series).

I love to listen to hiss/howling the fans of start-up resistors during acceleration! 550-600, in some movies more (700???) Amperes... Nice sound of traction motors, and reach high pitch at top speed. The interesting resistance contactor clatter incab.


True, within Central-European (former socialist) countries, V43 series has many uniqe construcion method. The single motor-bogie, the special, individual traction motor (transmission gears) sound due to previous, or the special swiss-type notch-control wheel (nastawnik) system.

But unfortunately, these uniqe equipments cause many problems in service, bad running on track due undercarriage/bogie, sometimes horrible strong gear-noises, frequent occurence to commutator ring fire due the huge diameter and peripheral speed of commutator, and high Voltages on each commutator slices.

On higher speed, insufficient tractive effort (on 130km/h, average 46kN only).


Of course, personally, and emotionally I like the loco, a few times travelled on foot plate of a V43, that machine was very silent gear-, and running noise, enough power.


The document, what You are need, I haven't, from my documents in axle bearing theme found only this:

1.: (tengely) axle;

2.: (tengelyágy) axlebox;

3.: (tengelyágy-csésze) axlebox cup;

4.: (betét) lining;

5.: (tengelyágy-tok) case-axle box;

6.: (olajszóró lapát) oil spreading vane/rotor blades.


Wikipedia said: axle/shaft end mounted rotor blades spread the oil to the top of the bearing, and through bores the lubricant get to the shaft.

The resulting oil circulation increases proportionally with the shaft RPM, so at high speeds results in good sliding conditions in the bearing.


Try improve with my poor english the very bad translator results, I hope, can correctly.



I would be really glad technical documents from the EU07! When You have Drive, maybe possible to upload easily.

Előzmény: mm1234 (3)
mm1234 Creative Commons License 2015.06.18 0 0 3

Thanks for your answer and for good opinion about EU07. It is true, it's very good, legend of PKP, still in service... but V43 isn't worse, and seeing from Poland, quite mysterious, very interesting construction. Every time when I am on some Budapest station I like to admire V43's and listen their distinctive 50 Hz sound when it start.

I haven't relatonship with, in the past only I use Maszyna simulator.

In general, I understand costruction of V43 bogie, but plain axle bearings "Isothermos" are unusual for me, in Polish rolling stock we haven't it.

If you are interested in 07, I have hand book of it in pdf, but files are quite heavy and maybe be a problem with sending it.

Best regards
Railroadman Creative Commons License 2015.06.16 0 1 2



You have a relationship with the site, or it's developers? Or a registration on that site? Maybe I can help You.


V43 series has a "simple" solid/friction bearings, from the '60-s at today.

The locomotive has Sécheron-system flexible transmission, one-side wheel disk drive. (EU06-07s Alshtom-system more interesting thence, from Hungary (-: ).

Since the axle-bearing conversation loco's can self-moving on a 2,5-3,5‰ slope.


Histories of EU06/07 and V43 series really very-very same.

But Siódemka's are better constructions.

Seventh's my absolute favourite locomotives a long ago; strong, durable, amazing, magnificent machines!




Előzmény: mm1234 (-)
mm1234 Creative Commons License 2015.06.14 0 0 1

Thank you. Of course I can wait the time what you need. Thanks for link to document, I'm going to translate it, it's very interesting and helpful.


Best regards

V43-1379 Creative Commons License 2015.06.14 0 1 0

Hello mm1234,


I will write for your question later, but at the moment I don't have time for it, thanks for your patience. If you want to translate a little bit, here is a document for you, where you got some information about this topic.



V43 1379

Előzmény: mm1234 (-)
mm1234 Creative Commons License 2015.06.13 0 0 topiknyitó

I am from Poland, and I am interested in Hungarian railways, very like it. I apologise that I write in English (btw. not very good ;)), but I don't speak Hungarian. My interest is in technicals of V43 locomotive. I read in some sources, that it had specific plain axle bearings "Isothermos", oil-lubricated. In other way, I read that this bearings were converted to normal roller bearings. It is very interesting. When the conversion was done? It is unusual, because Polish EU06 (made in UK) and licensed EU07 had roller axle bearings all time (plain bearings are in hollow shaft "Alsthom", but axles is in roller bearings) - and EU06 was projected in similar time to V43 - early 60's. And second question - have anyone scanned V43 hand book: "Útmutató a V43 sorozatú mozdony menetszolgálatához" in pdf?


Thanks in advance for any Your requests.

Ha kedveled azért, ha nem azért nyomj egy lájkot a Fórumért!