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GE IS200EXHSG4AEC

Product Name:​ EX2100 Exciter Terminal Board (High-Speed Relay Driver)
Product Introduction:​ The GE IS200EXHSG4AEC is an exciter terminal board within GE’s Mark VI / EX2100 series, providing secure field wiring termination for the exciter rack. It serves as the high-speed relay driver (G4 group) in breaker mode for simplex applications, responsible for field flashing and protection functions.
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Technical Specifications:
  • Series: Mark VI / EX2100
  • Role: Exciter High-Speed Relay Driver, Group G4
  • Control Mode: Breaker Mode, Simplex
  • Trip Relay: 41T (used), Close Relay 41 (used)
  • Contact Input: 3 wetting voltage 70 V DC
  • Dimensions: 220 mm × 180 mm × 50 mm
  • Weight: ≈ 0.65 kg
  • Connectors: 2× 20-pin ribbon cable headers for rack interface
  • Field Terminals: 12× 3-pin screw terminal blocks
  • Transient Suppression Diodes: 24 units
  • Filtering Capacitors: 6 units (1000 µF each), total 6000 µF
  • Maximum Terminal Current: 10 A per block
  • Voltage Rating: 500 V AC / 700 V DC
  • Operating Temperature: -30 °C to +70 °C
  • Manual: GEI-100475
Key Features:​ Direct replacement for older EXHSG revisions; heavy-duty PCB with thick copper traces for high-current paths; supports both AC and DC field wiring types; no configuration jumpers or software setup required; 24 transient suppression diodes clamp surges at 600 V protecting sensitive rack electronics; 6000 µF energy storage smooths voltage spikes from inductive field loads.
Working Principle:​ The board wets the 41, 53A, and 53B contacts. It is responsible for field flashing and protection functions, driving trip and close relays in simplex breaker-mode excitation applications.
Installation Requirements:​ Disconnect the main exciter supply before terminating any wires; secure the board with four mounting screws; route field cables through bottom entry; terminal blocks accept up to 14 AWG stranded or solid copper wire; connect to the main rack via two shielded ribbon cables; typically mounted near the exciter field output.
Usage Notes:​ For a redundant equivalent, replace “G4” with “G3” in the part number. The board supports both trip and close relay functionalities, which is not found in contactor versions of this board.

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