In March 2012 the acceptance and control testing on the frequency converter PCh36 U1 were carried out successfully.

The frequency converter PCh36 U1 transforms the 3-phase voltage of 380 V, 50 Hz into 3-phase voltage of 92..368 V, 20..80 Hz.

The frequency converter is issued to supply two air conditioners that are set on electric train ED4M and other series.

The frequency converter PCh36 U1 has a maximum output power of 47 kVA.