Product Overview
This exciter selector board manages redundant analog signals for brushless exciter control. You can install GE IS200ESELH2A IS200ESELH2AAA directly into GE Mark VIe exciter racks. The unit selects between dual excitation feedback sources automatically. It routes the active signal to the main regulator for continuous operation.
Technical Specifications
| Parameter | Value |
|---|---|
| Dimensions (W x H x D) | 180 mm x 105 mm x 25 mm |
| Weight | 0.39 kg |
| Number of input pairs | 2 redundant analog channels (A/B per signal) |
| Number of outputs | 2 selected analog signals |
| Input connector type | Two 10-position screw terminal blocks |
| Interface to controller | 50-pin ribbon cable |
| Analog input range | 0 to 10V DC or 4 to 20 mA |
| Analog output range | 0 to 10V DC (buffered) |
| Selection method | Automatic or manual override |
| Switchover time | <50 microseconds |
| Total onboard components | 96 discrete parts |
| Energy storage type | Tantalum and film capacitors |
| Energy storage rating | 470 µF at 35V DC |
| Operating temperature | -30°C to +65°C |
Board Layout and Components
The PCB routes each redundant pair through high-speed analog multiplexers. Two independent selector circuits manage A/B source switching for each channel. Moreover, 96 discrete components include voltage followers and buffer amplifiers. Tantalum capacitors provide 470 µF of energy for glitch-free switching. Consequently, the output never sees open-circuit conditions during source changes.
Installation Process
You can mount GE IS200ESELH2A IS200ESELH2AAA on a standard 35 mm DIN rail. The 50-pin ribbon cable connects directly to the exciter regulator card. Furthermore, each screw terminal accepts 16–24 AWG shielded instrument wire. Clearly marked A/B labels identify redundant source connections for field wiring.
Performance Advantages
This board switches between redundant sources in under 50 microseconds. Automatic selection activates when the primary signal drifts outside acceptable limits. Therefore, excitation control continues without any noticeable disturbance. The override jumper also allows manual source selection during commissioning.
Safety and Compliance
GE IS200ESELH2A IS200ESELH2AAA meets CE and RoHS industrial standards. The board self-discharges stored energy below 3V within six seconds. Hence, technicians face minimal electrical risk during field servicing.
Details
| Weight | 0.1 kg |
|---|---|
| Dimensions | 25 × 108 × 127 mm |
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