The primary function of the Voltage Feedback Scaling Board DS200NATOG1A is to attenuate the DC and AC voltages of a silicon-controlled rectifier (SCR) bridge to ensure that feedback voltages from the bridge are accurately derived. Within this board, there are five indistinguishable series-connected strings of resistors. For each of the three AC phases, there is one string with an extra apiece for the negative and positive DC bus voltages. The aforementioned are used strictly for the input of the board, there are differences when it pertains to the outputs on this board.
The DS200NATOG1A board has resistors, these resistors are all grouped into five resistors strings, which each have three stab connectors (input points) which gives a total of fifteen input points; each resistor string also has two optional wire jumpers which totals ten wire jumpers. There are also a total of five test points on this board, typically these test points are strictly used for factory tests at low voltages.
The DS200NATOG1A board was specifically designed to meet the following standards; UL, EC, and CSA, these standards are used for transients controlled and known. The best manual to use when operating this board is the GEI-100225 which is the part-specific manual for the NATO boards.