Alstom Cdg31 Relay Manual Download ((new)) May 2026

Typically features 2 overcurrent (O/C) elements and 1 earth fault (E/F) element.

Adjustable via a plug bridge in ranges like 10–40%, 20–80%, or 50–200% of the rated current. alstom cdg31 relay manual download

When current from a current transformer (CT) exceeds the set threshold, an aluminum disc rotates. This rotation eventually closes contacts to trigger a circuit breaker trip. Key Settings: Typically features 2 overcurrent (O/C) elements and 1

Finding the is essential for engineers working with traditional electromechanical protection systems. The CDG31 is a triple-pole version of the widely-used CDG11, primarily serving as an Inverse Definite Minimum Time (IDMT) overcurrent and earth fault relay. Technical Overview of Alstom CDG31 This rotation eventually closes contacts to trigger a

The CDG31 relay is a heavily damped induction disc unit designed for selective phase and earth fault protection. It is frequently used in radial feeder protection and for safeguarding transformers and motors.