I/O modules

Key Technical Specifications

This GE IS200ERGTH1A IS200ERGTH1AAA board operates from 240V AC single-phase supply. It senses ground fault current with high precision for exciter systems. The unit measures 19 cm in length, 13 cm in width, and 4 cm in height. Its total weight equals 0.55 kg without any packaging materials.

The GE IS200ERGTH1A IS200ERGTH1AAA includes four independent ground detection channels. Additionally, it features one LED indicator array for each channel status. A single 20-pin header connects to the main monitoring system. The board contains 4 current transformers, 2 comparators, 8 diodes, and 14 resistors.

GE IS200ERGTH1A IS200ERGTH1AAA stores energy using one electrolytic capacitor. This capacitor provides 220 µF at 50V rating for relay hold-up time. Consequently, the board maintains fault indication during 100 millisecond power interruptions. Therefore, operators can identify ground faults even after brief power loss.

Design and Integration

Both the GE IS200ERGTH1A and IS200ERGTH1AAA versions share identical detection circuitry. These boards use four-layer PCB construction with isolated ground planes for noise immunity. Consequently, the GE IS200ERGTH1A IS200ERGTH1AAA operates reliably from -10°C to +55°C ambient temperature.

For installation, you need M3 screws for the four corner mounting holes. The board draws 40 mA typical current from the 240V AC supply. During ground fault detection, it consumes 60 mA maximum. We recommend using a 0.5A slow-blow fuse for circuit protection.

Practical Application

This ground detector board monitors ungrounded exciter field circuits for insulation faults. It triggers an alarm when any channel detects current leakage to earth. The GE IS200ERGTH1A IS200ERGTH1AAA also provides latching outputs for each fault channel. Therefore, it helps operators identify ground faults before system shutdown occurs.

Details