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The IS200EDFFH3A IS200EDFFH3AAA functions as an exciter DC field feedback board. This printed circuit board belongs to the Mark VI Speedtronic series from General Electric. The IS200EDFFH3A serves as the standard version for field feedback monitoring. Its variant, the IS200EDFFH3AAA, includes a conformal coating for extra circuit protection. Both boards monitor DC field feedback for steam and gas turbine exciters.
Core Technical Specifications
This board provides multiple analog input channels for field voltage monitoring. You will also find isolation amplifiers for each input channel. The board stores minimal energy but uses capacitors for signal filtering. Meanwhile, the backplane interface handles all power and data transfers.
| Parameter | Specification |
|---|---|
| Full Model No. | IS200EDFFH3A IS200EDFFH3AAA |
| Manufacturer | GE Industrial Systems (General Electric) |
| Series | Mark VI Speedtronic |
| Board Category | PCB Board (Exciter DC Field Feedback) |
| Weight | Approximately 0.33 kg |
| Dimensions (H x W x D) | 6.0 cm x 23.0 cm x 3.0 cm |
| Analog Input Channels | 6 differential field feedback channels |
| Input Voltage Range | 0 to 300 VDC |
| Isolation Amplifiers | Built-in isolation per channel |
| Isolation Voltage | 2500 VDC channel to backplane |
| Bandwidth | 1 kHz typical |
| Terminal Type | Screw terminal connectors |
| Backplane Interface | VME compatible |
| Energy Storage | Small capacitors for signal filtering |
| Coating (for AAA) | Conformal coated against moisture and dust |
Installation and System Integration
Install the IS200EDFFH3A IS200EDFFH3AAA into any standard VME rack slot. The board connects directly to exciter field circuits through its terminals. Meanwhile, the backplane supplies power and communication to the board. Therefore, proper insertion ensures reliable field feedback monitoring.