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GD233 DTR000017049D

The ALSTOM GD233 (DTR000017049D) is a digital protection relay or control module designed for electrical power systems, typically used in medium-voltage (MV) and high-voltage (HV) applications. It is part of Alstom’s (now Hitachi Energy) legacy protection and automation portfolio, providing overcurrent, earth fault, and circuit breaker management in substations and industrial power networks.

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Key Features
Protection Functions

Overcurrent (50/51) – Phase and earth fault protection.

Directional Overcurrent (67) – For grid selectivity.

Auto-Reclosing (79) – For transient fault recovery.

Breaker Failure (50BF) – Backup tripping if primary protection fails.

Advanced Control & Monitoring

Real-time current/voltage measurements.

Event recording & fault analysis (disturbance records).

Programmable logic (PLC-like functionality).

Communication & Integration

Supports IEC 60870-5-103, Modbus RTU, or DNP3 protocols.

Compatible with Alstom/Hitachi Energy SCADA systems.

Robust & Reliable Design

Industrial-grade hardware for harsh environments.

LED indicators for status & alarms.

Typical Applications
Electrical Substations (MV/HV feeders, transformers).

Industrial Power Distribution (mines, factories, oil & gas).

Renewable Energy Plants (wind/solar grid connection).