GE VOLTAGE FEEDBACK SCALING BOARD DS200NATOG1ABB
Description:
DS200NATOG1A is manufactured by GE, it is one of the GE Innovation series the Voltage Feedback Scaling board(NATO). DS200NATOG1A is designed to attenuates the AC and DC voltages of an SCR bridge, enabling the bridge voltage feedbacks may be accurately derived in the control system. It operates in conjunction with two other boards, a VME backplane and a gate distribution and status board.

DS200NATOG1A contains five identical, series-connected strings of precision resistors. There is one string for each of the three AC phases, and one more apiece for positive and negative DC bus voltage. Each string can be configured using a selection of three different input stab connectors and two wire jumpers to attenuate 6900, 4200, 3300, 2200, or 1200 volt input.

The outputs of the five strings are connected to a single 20 pin ribbon header (see Table 2). A metal oxide varistor (MOV) prevents the output voltage of each string from becoming too high if the output ribbon circuit is interrupted while input voltage is present. Note that the burden resistor for the feedback circuit is located on the associated gate distribution and status board, not on the DS200NATOG1A itself.

The part number, DS200NATOG1ABB, stamped on the edge of the board. DS200NATOG1ABB can meet the CSA/UL /ECstandards for "transients known and controlled."

Q&A:
1. How to replace of a DS200NATOG1ABB?
Firstly, the power should be turned off.
Secondly, remove the DS200NATOG1ABB board, carefully disconnect all cables.
Thirdly, Remove the standoffs that hold the board in place. Remove the lock washers