GE IS200EXHSG3AEC Relay Driver Board

Overview

The GE IS200EXHSG3AEC is a high-speed relay driver board built for the EX2100 Excitation Control System. It plays a key role in turbine excitation by managing 12 relay outputs with high-speed switching and optical isolation. Designed using surface-mount technology, the board ensures fast, reliable control and meets strict IEEE protection standards. Engineers use it in breaker control applications, where precision and redundancy are critical.

Technical Specifications

Electrical Characteristics

• Relay Coil Power: 125 V DC nominal

• Operating Voltage Range: 100–140 V DC

• Contact Power Supply: 24 V DC (from exciter cabinet)

• Input Contact Power: 70 V DC (for 41, 53A, 53B)

• Contact Rating: 5 A @ 250 V AC

• Isolation Voltage: 2500 Vrms

Relay Performance

• Relay Channels: 12

• Relay Driver: Dual redundant with optical isolation

• Break Capacity (Resistive): 2 A @ 28 V DC

• Break Capacity (Inductive): 1 A @ 28 V DC for 0.007 sec

• Coil Suppression: External (not integrated on board)

• Arc Suppression: Built-in RC snubbers

Physical Characteristics

• Dimensions: 8.26 cm (H) × 4.19 cm (W) × 12.1 cm (D)

• Weight: Approx. 120 grams

• Connectors:

• Three vertical D-shell pin connectors

• Eight plug connectors (various sizes)

• PCB Coating: Normal

Environmental and Compliance

• Operating Temperature: -40°C to +85°C

• MTBF: 250,000 hours

• Standards Compliance: IEEE C37.90