SZT SN82, SN83. 2023.

Zagórz 2023-05-10

Motor car SN82 (DH1), Diesel Multiple Unit SN83 (DH2).

Diesel multiple units SN82 (DH1, motor car) and SN83 (DH2, two motor cars) were developed in Germany and built for the needs of Dutch railways. After years, three SN82 wagons and seven SN83 trains were delivered to Poland.

SN82. 2023 year. Photo by Karol Placha Hetman
SN82. 2023 year. Photo by Karol Placha Hetman

SN82. 2023 year. Photo by Karol Placha Hetman
SN82. 2023 year. Photo by Karol Placha Hetman

SN82. 2023 year. Photo by Karol Placha Hetman
SN82. 2023 year. Photo by Karol Placha Hetman

SN82. 2023 year. Photo by Karol Placha Hetman
SN82. 2023 year. Photo by Karol Placha Hetman

The trains were built at the Düwag factory in West Germany in Düsseldorf. They were produced in the period 1981 - 1983. 50 cars were built for the Dutch railway Nederlandse Spoorwegen. Each wagon is equipped with one Cummins NT 855 R4 internal combustion engine. The drive to the wheels is transmitted through a hydraulic transmission. Top speed 100 km/h. Knorr air brake system.

The wagons have the following dimensions: Width 2.856 m. Height 3.60 m. Wheel diameter 0.84 m. The entry height from the rail head is 1.22 m.

History of motor cars DH1, DH2.

In 1978, the Dutch decided to establish cooperation with the Düwag company, which produced the tested vehicle 627 008. Its parameters were considered appropriate. In the period 1981 - 1982, the Düwag plant in Düsseldorf produced 31 DH2 two-car units, while in 1983, 19 DH1 wagons were produced in the same plant. Trains in the Netherlands were called Wadloper (Wanderer).

In 2006, these wagons were decommissioned and put up for sale. In 2008, the trains were sold to carriers in Poland, Romania and Argentina. In Poland, they were operated by Przewozy Regionalne, Koleje Mazowieckie, Koleje Śląskie and SKPL.

The DH1 car has two driver's cabins at the ends, two entrance vestibules and one passenger compartment. One of the vestibules is larger and is designed to carry larger luggage and bicycles. The second vestibule leads to the toilet. In the DH2 version, one driver's cabin was eliminated and a passage between cars was installed in this place. In the DH2 version, the passenger compartment is longer. There is only one toilet in IMS DH2. Inside, there is fluorescent lighting, which is powered by 24 V DC.

The wagons are fitted with a spring-and-slide door. Due to the high platforms in the Netherlands, there were no steps under the door. In Poland, additional steps had to be installed under the entrance door, which are tilted on the platforms. The fronts of the trains have a single large window for the driver, which is equipped with two wipers. Six headlights were fitted; three white and two red. The driver has at his disposal large tilting rear-view mirrors. The lower part is equipped with a safety blade. The wagon is equipped with a Scharfenberg coupler.

The carriages are equipped with air conditioning, but some passenger windows have small opening windows. The wagons are equipped with heating, which uses heat from the engine cooling system. Most of the equipment and devices were placed under the car body; air compressor, air and fuel tanks, batteries and others.

Drive unit.

DH 1 / DH2 are powered by Cummins NT 855 R4 engines. These are combustion diesel engines with a power of 210 kW, equipped with six cylinders in a row. The engine is liquid cooled. The exhaust system leads the exhaust fumes above the roof of the car. Voith hydraulic transmission type T211r. A magnetic brake system was planned, but only the Knorr air brake was used.

Data T-T DH1 / DH2:

Layout of wagons s / s+s. Axle system B′2′ / 2′B′+B′2′. Wagon length 21.71 m. Set length 22.310 m / 43.45 m. Width 2.856 m. Height 3.60 m. Entrance door width 1.30 m. Aisle width 0.80 m. Number of seats 56 after reconstruction 54 / 148 remodeled 140. There are also additional reclining seats inside. Wheel diameter 0.84 m. Axle base in bogie 2.00 m. Total weight 37,000 kg / 69,000 kg. Number of motors 1 x 210 kW / 2 x 210 kW. Fuel tanks 750 liters / 1,500 liters. Top speed 100 km/h.

In Poland, 3 DH1 (SN82) trains were operated, acquired in 2010 - 2012 for PolRegio. Then transferred to SKPL. The next 7 DH2 trains were purchased in the period 2010 - 2012. They were used by PolRegio, Koleje Mazowieckie, Koleje Śląskie.

DH1; SN82-001 No. 85486 built in 1983. SN82-002 No. 85489 built in 1983. SN82-003 No. 85494 built in 1983. PCS DH2; SN83-001, SN83-002, SN83-003, SN83-004, SN83-005, SN83-006, SN83-007.

Written by Karol Placha Hetman