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  • CR4 - Thread: Should Mobile Power Generators be Grounded?
    The safety transformers I am talking about are 220volts in to 115 volts out, center tapped to ground.....thats for the UK......
  • A Tungsten Coil Furnace for High?Temperature X?Ray Diffraction Investigations
    Two 115 -volt20- ampere Variacst connected in series across the 220 - volt supply were used to control the input voltage to the primary of a 12.5:1 step-down transformer .
  • Voltage Standardization
    � and 220 volts, namely 2 X 110,4 X< 110, and 2 X referred to the same point in the system, i. e., to the 220 volts , were accepted as standards � � and primary terminals of transformers ). pressures 115 , 230, and 460 volts �
  • 1981 Index IEEE Transactions on Power Apparatus and Systems Vol. PAS-100
    � S Jun 81 2726-2732 electromagnetic voltage transformer damage when 220 -kV bus was deenergized � � 81 4795-4801 phase- to -phase gap risk of � � switching surge response of transformer insulation designed on basis � � frequency partial discharge inception volt -time curves; Cesari, S � � T-PAS Apr 81 1597-1607 uprating 41.6-kV subtransmission line to 115 kV; insulation, switching �