T3 cars (reg. no. 6102-6992) are in terms of driving performance, principles of vehicle control (with only minor deviations) are consistent with earlier types (T1 and T2) and are the most common type still in operation, from which other types, hereinafter referred to have been derived.

T3 cars are equipped with semi-automatic control, traction control and auxiliary equipment is indirect via contactors. In operation they are used separately or in the train. The train has multi-sectional control, it is controlled from the front driver's post or the auxiliary station of the rear car. T3 cars in Prague are not designed for use with towed vehicles.

The first prototype, reg. no. 6101 was produced in 1960. In the autumn of the same year a trial operation began in Prague. The car was put in normal operation on 21 August 1961 and in the spring of 1962 it was after a serious accident involving a brewery lorry put out of the operation (from that time it was nicknamed "Barley"). The repair only was made after the start of the serial production of T3 trams in the autumn 1963, after which it was again put into operation. It was put out of the operation for the transport of persons in 1984 and consequently it was registered as a service car 5513 for seven months (only administratively). In May 1985, the car was scrapped. The prototype differed from the standard serial design by the execution of doors of T1 and T2 type (front and rear doors of 1300 mm and middle door of 1050 mm), the covered base of the pantograph, protective equipment Svoboda - Jirgl - Charvát, atypical seats, the conductor post, Tatra logo on the front etc. Due to extensive later changes on the vehicle the car was not selected for preservation.

The second prototype (leading vehicle) reg. no. 6102 was manufactured in 1962 and put into operation. It was put out of the operation in 1996 but thanks to the efforts of a few enthusiasts, the car was maintained and renovated to its original state and has been used for operating commercial drives and 91 line.

T3 cars were produced until 1976, when the production of this version was discontinued. Because at that time, plans were in place to reduce the Prague tram network (due to metro and buses development), the excess vehicles in service were expected to be used for the operation in other cities making a purchase of new cars unnecessary. After reviewing these plans and the rejection of a new type T5 for the Prague operation shortage of T3 cars occurred.

After the accident at Špejchar in 1981 and the immediate putting of T1 cars out of the operation it was necessary to negotiate at the Interior Ministry and in Tatra the purchase of still produced type T3SU, again with resistive control. This type replaced T1 and gradually older T3 cars. As for the T5 car, one prototype, the reg. no. 8000 was produced in 1972. It was tested in Prague for two years but the DP technicians did not like the self-contained body made of relatively thin metal sheet (following their experiences with the operation of the ŠM 11 bus, which had problems with cracks), and therefore this type of tram was refused for Prague. They ordered the latest series of T3 instead. Their fears were confirmed in the operation of the T5 type in the town of Most.

The last three delivered series were upgraded in 1977 - 1981 in DP by equipping the pulse equipment of TV1 on T3M. These cars were already produced with the isolator - earthing switch 600 V.

From 1994 to 1998 the central workshops of DP upgraded T3 car, the registration number 6329 to the type T3R, reg. no. 8205 with GTO thyristors. It was in the operation from April 1999 and it was equipped with upholstered seats, non-slip flooring, information system, recuperation system, semi-automatic couplers, swinging double doors, electric sandblast, static converter, anti-slip / anti-skid protection etc.

As a result of a high failure rate it was not in operation for many years. In 2005 it was weaned and a year later scrapped. Its front has been preserved as a memorial located in front of the Tram Repair Shop.


Specifications

Total vehicle length: 15,104 mm
Vehicle height: 3,060 mm
Vehicle width: 2,500 mm
Vehicle weight: 16,960 kg
The maximum number of seats / standing places: 24 / 138 persons

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Tram Repair Plant
U Vozovny 590/6
108 00 Praha 10

opravnatramvaji@dpp.cz