Under Frequency Relay definition

Under Frequency Relay means a relay which operates when the system frequency falls below a specified limit and initiates load shedding
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Under Frequency Relay means a relay which operates when the system frequency falls below a pre-set value;
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Under Frequency Relay means an electrical measuring relay intended to operate when its characteristic quantity reaches the relay settings by decrease in frequency.
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More Definitions of Under Frequency Relay

Under Frequency Relay. (UFR) means a continuously monitoring relay that will operate, giving an alarm or initiation signal upon measured frequency moves outside set point limit.
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Under Frequency Relay means a relay which operates when the system frequency falls below a preset value;
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Under Frequency Relay means a relay which operates when the system frequency falls below a laid down limit and initiates load shedding;
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Related to Under Frequency Relay

  • frequency ride through as used herein shall mean the ability of a Small Generating Facility to stay connected to and synchronized with the system or equipment of the Transmission Owner and any Affected Systems during system disturbances within a range of under-frequency and over- frequency conditions, in accordance with Good Utility Practice and consistent with any standards and guidelines that are applied to other generating facilities in the Balancing Authority Area on a comparable basis. The term “voltage ride through” as used herein shall mean the ability of a Small Generating Facility to stay connected to and synchronized with the system or equipment of the Transmission Owner and any Affected Systems during system disturbances within a range of under-voltage and over-voltage conditions, in accordance with Good Utility Practice and consistent with any standards and guidelines that are applied to other generating facilities in the Balancing Authority Area on a comparable basis.

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