Transformer Protection Mechanisms Quiz

A protection method for transformers that prevents damage from excessive current flow. Protective relays trip circuit breakers to isolate the transformer if overcurrent occurs.

A transformer protection method that compares the current entering and leaving the transformer. Any difference indicates a fault, triggering a trip signal.

A relay installed in oil-immersed transformers that detects internal short circuits and incipient faults by monitoring gas buildup and oil flow.

Transformers use sensors to monitor winding and oil temperatures. Alarms and trips are triggered when temperatures exceed set limits.

Protects transformers from voltage exceeding safe limits, triggering a trip if necessary.

Protects transformers from voltage dropping below acceptable levels, triggering a trip if necessary.

Automatic tap changers adjust transformer turns ratio to maintain voltage. Protection systems prevent malfunctions during these changes.

A fault between a phase wire and ground, detected by relays, which is crucial to prevent insulation damage.

A fault between two phase wires, detected by relays, which is crucial to prevent insulation damage.

Transformers operate at specific frequencies. Deviations from this can lead to overheating; protection systems address this issue.

A system for disconnecting a transformer if the frequency of the power system goes outside acceptable limits.

Using protective relays to identify and quickly isolate short circuits, preventing transformer and connected equipment damage.

System that monitors imbalances in voltage and current, indicating potential faults or unbalanced loads and initiates corrective actions.

Using solid-state devices (transistors, thyristors) for power system protection instead of electro-mechanical relays.

Semiconductor components like thyristors and transistors used in static relays for controlling current.

Components that continuously compare power system input signals (current, voltage) against reference points for protection decisions.

A relay that activates when the current exceeds a preset limit.

A relay that operates based on the direction of current flow, providing selective fault detection.

A relay that compares currents entering and leaving a protected area to detect internal faults.

Protection relays that use digital technology for flexible programming, more advanced communication, and increased accuracy and reliability.

A system to prevent transformer damage by excessive current.

Compares entering and leaving transformer current to detect internal faults.

Monitors gas/oil in oil-immersed transformers for internal faults.

Keeps track of transformer winding/oil temperature to prevent overheating.

Protects transformers from dangerously high voltage.

Adjusts transformer's turns ratio to maintain voltage.

A fault between a phase wire and ground, detected by relays.

Protects the transformer from operating at wrong frequencies.

Faults inside a transformer often involving short circuits.

Safeguarding transformers from faults, overload, and other issues to ensure system reliability.

Protects transformers by disconnecting them if the power system frequency deviates from the acceptable range.

Uses relays to detect and quickly isolate short circuits, preventing extensive damage.

Monitors voltage and current imbalances; these imbalances suggest faults or unbalanced loads.

Uses solid-state devices (transistors, thyristors) for power system protection instead of electromechanical relays.

Semiconductor components (transistors, thyristors) used in static relays, controlling current flow.

Continuously compare input signals (voltage, current) to reference values, making protection decisions.

Activates when electrical current exceeds a set limit.

Operates based on the direction of current flow, providing selective fault detection.

Protection relays using digital technology for flexible programming, advanced communication, and increased accuracy.

Compares current entering and leaving a protected zone to spot internal faults.