The Konstal 105Na are a class of Polish trams manufactured from 1979 to 1992 in the workshops Konstal Chorzów, Poland. The metre-gauge version is designated as 805Na. As of 2016 they were still the most common trams in Poland.
Construction 105Na is unidirectional motor tramcar, equipped with four doors.
It is a development of the earlier Konstal 105N. The main changes being a shift in the location of the electrical equipment from under the steps to the back wall of the driver's cabin, the introduction of a separate cabin for the driver, as well as the removal of the small windows under the front and side windscreens. The most important change was the introduction of motor grouping, which reduced the energy consumption by 12%. During initial acceleration, the four motors are connected in series, whilst at higher speeds, two groups of motors are connected in parallel.
While in service, the 105Na vehicles were the subject of various modifications and upgrades (including changes in the electrical system, new front plastic, change of the door opening mechanism, and even re-design, for Poznań, to the bidirectional Konstal 105NaDK). Almost all 105N cars in Poland have over time been modernised to the 105Na standard.
Other variants
The Konstal 105Na and 805Na trams provided the basis for the production of a large number of prototypes and variants:
105Nb - new doors and bogies, 15 units built in 1988-1993 105Nb/e - slightly modified electrical system, 6 units built in 1994 105Ne - slightly thicker walls, 18 units built in 1993 105Nf - modernised brakes and drivers console, 44 units built in 1994-1996 105Ng - three doors, static converter and modified breaks, 2 units built in 1993 additional units obtained by modernising 105Na 105Nm - similar to 105Nf but with a static converter, 14 units built in 1996-1997 105Np - static converter, single unit built in 1994 105NT - thyristor based, 13 units built in 1985–1989, later converted to standard 105Na 105Nz - thyristor based and asynchronous motor, 2 units built in 1997 105N1k - similar to 105Ng but thyristor based, 3 units built in 1995 105N1k2 - similar to 105N1k but with electrical systems from a different supplier, 60 units built in 1995-2000 105N2k2000 - similar to 105N1k2 with a plastic front and rear, 36 units built in 2001 106N - thyristor based, 7 units built in 1977–1987, later converted to standard 105Na 106Na - thyristor based, 8 units built in 1991-1993 805Nb - meter-gauge version of the 105Nb 805NS - meter-gauge with new accelerator, 12 units built in 1984-1990 111N - with doors on both sides - two 111N cars connected back-to-back could work as a bidirectional tram, 6 units built in 1993
Production numbers
The number of standard-gauge version 105Na vehicles produced is 1443 while the number narrow-gauge version, the 805Na, is 691.
Operators
These trams were used in all Polish cities which operate a tram system and they are the largest group in the stock. Konstal 105Na Image Operator Number of 105Na in stock Modernised variants MPK Częstochowa 26 ZKM Gdańsk 5 MZK Gorzów Wielkopolski 4 Tramwaje Śląskie 81107 MPK Kraków 641 MPK Poznań 2640 Trams in Szczecin 246 Tramwaje Warszawskie 167221 MPK Wrocław 20168
805Na (Metere Gauge) Image Operator Number of 105Na in stock Modernised variants MZK Bydgoszcz 892 ZKM Elbląg 124 MZK Grudziądz 86 MPK Łódź 134236 MZK Toruń 2718
Gallery
References