Description
Key Technical Specifications
| Parameter | Specification |
|---|---|
| Product Model | DS200NATOG3A |
| Manufacturer | General Electric |
| Product Type | Voltage feedback scaling board |
| Application Platform | GE LS2100e / LCI static starter |
| Measurement Paths | 5 |
| AC Feedback | Three-phase bridge voltage feedback |
| DC Feedback | Positive and negative DC-bus feedback |
| Output Connector | JV ribbon-cable interface |
| Scaling Method | Resistor-divider networks |
| Configuration | Group-specific wiring/jumper arrangement |
| Lifecycle | Reported obsolete; verify current support and stock |
The five feedback paths and JV output interface are described in available product documentation. Exact voltage ranges and jumper arrangements must be confirmed against the installed board and its applicable manual.
Product Introduction
The GE DS200NATOG3A is a voltage feedback scaling board used in line-commutated inverter (LCI) static starter equipment. It reduces selected AC bridge and DC-bus voltages to scaled feedback signals for downstream control electronics. This feedback helps the starter monitor the electrical condition of the SCR bridge during operation.
For maintenance and procurement, the critical distinction is the G3 board group. This is a high-potential measurement assembly, not a conventional analog I/O board. Its resistor-divider configuration, connections, and output loading must match the specific static-starter design. Do not assume that another NATO-family board is interchangeable simply because its model number looks similar.
DS200NATOG2A
Application Scenarios & Field Pitfalls
Engineering Pain Point
The LCI starter must obtain usable voltage feedback from the SCR bridge without routing the full bridge potential directly into low-voltage control electronics. The DS200NATOG3A performs this scaling function across three AC-phase paths and two DC-bus paths.
Typical Applications
- Gas turbine static starting: Voltage feedback during turbine acceleration and starting sequences.
- Steam turbine starting systems: Monitoring SCR bridge voltage in applicable static-starter installations.
- Large motor and generator starting: Feedback measurement within compatible LCI power-conversion equipment.
- Legacy GE LS2100e maintenance: Replacement of a failed voltage-scaling board while retaining the documented configuration.
Technical Pitfalls to Avoid
- Do not copy G1 or G2 settings to a G3 board. Verify the exact configuration using the applicable wiring diagram and manual.
- Do not troubleshoot energized high-voltage circuitry casually. Isolate the equipment, follow lockout/tagout procedures, and use qualified personnel. The board’s measurement circuitry can be at hazardous potential.
- Check the common signal path. If several feedback values fail simultaneously, inspect the JV ribbon connection and receiving circuitry as well as the individual measurement paths.
- Avoid unverified electrical specifications. Confirm the applicable bridge-voltage range and divider configuration from the equipment documentation before commissioning.
These precautions are consistent with the published board descriptions and their warnings about group-specific configuration and hazardous test points.
Related Products
- GE DS200NATOG2A — related NATO voltage-feedback board; do not assume it is a drop-in replacement for G3.
- GE DS200NATOG3ACB — associated catalog designation found in parts listings; verify the full nameplate and revision suffix.
- GE LS2100e — static-starter platform associated with this voltage feedback board.
- GE LCI SCR bridge assemblies — power-conversion hardware whose voltage signals are measured by the board.
- GE VME backplane and receiving electronics — downstream control hardware that receives the scaled feedback signals.
The related part numbers and platform associations are documented in parts references, but actual interchangeability requires confirmation against the original equipment drawings.
Procurement Check
Before ordering DS200NATOG3A, confirm the complete part number, G3 group, installed jumper configuration, connector condition, and the specific LS2100e cabinet application. Because this board handles scaled feedback from high-voltage power circuitry and is reported as obsolete, request clear photographs of the board label and component side, plus documented test status for used or refurbished stock. Do not accept a generic “NATO board” description as proof of compatibility.
