TY JOUR TI Using the multifunction relay insulation monitoring and control phases in the control circuit by a crane KW The beam crane KW electric motors KW relay control speed KW braking KW engine control re-lay phase KW and insulation resistance JO Voronezh Scientific-Technical Bulletin AU Mazukha, N.. AU Mazukha, A.. PY 2015 IS 4 PB FSBE Institution of Higher Education Voronezh State University of Forestry and Technologies named after G.F. Morozov