SHP (automatic train brake) button is located next to drive controller. Windscreens are equipped with 150W heater used during winter. Additional, 300W heater is located under the dashboard in order to heat crew's legs, but this was installed only in modernised 3E/1 version. Crew compartment A has washbasin and clothes locker installed. Sound horn and sander buttons are located on the floor. In the wall of machine compartments large blinds are used as air intakes. On the opposite side, along the corridor rectangular blins are mounted between windows. Locomotives of 3E series have three windows on each side whilst 3E/1 locomotives have two windows on the side of machine compartments and three windows on the corridor side. There are compressors and blowers on the floors of machine compartments and two air tanks, 220 liters each, are mounted under the roof. In a non-modernised machine battery box was installed in A crew compartment whilst in a modernised version batteries were placed inside machine compartments. Air tank for raising the pantograph is located in B crew compartment. All high voltage devices and resistors are located inside high voltage compartment. In modernised version of ET21 locomotive this is placed in the middle part of the box. It is possible to completely remove the framework of high voltage compartment. Locomotive's roof is divided into several parts and over the high voltage compartment it is removable. Nicknames Telewizor (TV set) - from the shape Sputnik References Railway locomotives introduced in 1957 Pafawag locomotives Co′Co′ locomotives 3000 V DC locomotives Polish State Railways electric locomotives Standard gauge locomotives of Poland Co′Co′ electric locomotives of Europe