General Electric T35 Transformer Management Relay Unit

Description

The MultilinTM T35 is a three-phase transformer relay designed to protect power transformers with up to six windings/restraints. It offers automatic or user-definable magnitude reference winding selection for CT ratio matching and performs automatic phase shift compensation for various transformer winding connections. The T35 algorithm enables zero-sequence current removal even for delta-connected transformer windings, accommodating diverse grounding configurations.

Key Benefits

• Provides secure, high-speed protection compliant with IEEE® C37.91, enhancing transformer asset life.
• Features improved security during transformer energization and inrush with an adaptive 2nd harmonic restraint algorithm.
• Offers flexibility for transformers with up to 6 sets of CTs, allowing independent magnitude/phase angle compensation and grounding settings.
• Includes advanced automation capabilities for customized protection and control solutions.
• Equipped with an integrated large, full-color display for real-time visualization and control, featuring bay mimic, annunciator functionality, and graphical phasor visualization.

Applications

• Suitable for combined protection of transformers and small bus zones, including breaker-and-a-half and ring bus configurations.
• Used as a standalone device or integrated component in automated substation control systems.
• Ideal for primary and backup protection of power transformers, autotransformers, reactors, split-phase, and angle regulating transformers.