In January 2022, a commission appointed by the Traction Directorate (a branch of Russian Railways) on the tracks of the TCH-12 St. Petersburg-Finlandsky locomotive depot and on the St. Petersburg-Kuznechnoye section, measured the levels of electromagnetic interference created by the electrical equipment of a 3ES4K three-section freight electromotive.

The tests showed that electric equipment of the 3ES4K electromotive, including auxiliary converter PSN235 Y2, guarantee that the requirements are met in the parking place and when the 3ES4K electromotive is moving (clause 4.3 of GOST 33436.3 1 2015) according to the voltage accepted values of the electromagnetic interferences generated at the receiver input of the locomotive radio station (at the level of 2.13 MHz wave band).