Protective Relays Sample Clauses
The Protective Relays clause establishes requirements for the installation and maintenance of devices that automatically detect electrical faults and isolate affected sections of a power system. In practice, this clause typically mandates the use of specific types of relays, outlines performance standards, and may require regular testing to ensure reliability. Its core function is to enhance system safety and reliability by minimizing damage and service interruptions caused by electrical faults.
Protective Relays o Battery and Uninterruptible Power Supply Systems -------------------------------------------------------------------------------- Proprietary Information Page 1 AES IRONWOOD CONTRACT FINAL ISSUE - OCTOBER 30, 1998 -------------------------------------------------------------------------------- GENERAL REQUIREMENTS
Protective Relays. Metering and protection of the balance of plant electrical equipment against over loads, short circuits and abnormal operating conditions is provided by the plant protective relay panelboards. These panelboards incorporate the protection of the generator step-up transformer, the steam turbine-generator, and the station auxiliary transformer.
Protective Relays. General. Century shall perform, or cause to be performed, all work and services necessary or appropriate to engineer, design, develop, procure, install, own, operate and maintain the Protective Relays (the "Work") in accordance with this Agreement and subject to the rights and obligations of Big Rivers and Kenergy set forth herein.
Protective Relays. All protective relays shall be digital-type with industry standard communications port provided with external targets to show relay operation to assist operator in determining which relays have operated.
Protective Relays. ▇▇▇▇▇▇▇▇ Electric Model M3420 2ea
Protective Relays. Each Party shall provide and maintain mutually beneficial protective relay schemes on its side of the Point of Receipt. Generator agrees to have all such protective relay scheme settings reviewed and approved by Transmission Owner, which approval shall not be unreasonably withheld or delayed, in order to ensure proper coordination with existing Transmission Owner protective relay schemes, and further agrees to operate such schemes in compliance with Transmission Owner-approved settings. Each Party agrees to test such schemes at intervals determined by Transmission Provider consistent with Good Utility Practice. Upon completion of each test, the results of the test shall be provided to the other Party. Each Party will notify the other in writing as soon as practicable of any failures in, or any setting or design changes to, such protective relay schemes.
Protective Relays. The Operator shall operate the Power Station with all of its protective relays in service whenever the Power Station is connected to or is in parallel with the PLN grid system. Any deviation shall only be for brief periods of emergency or maintenance and repair.
Protective Relays. Protective relays shall be provided as shown on the design one line diagram and shall be mounted semi flush on the switchgear door. All relays shall be drawing out utility grade switchgear relays suitable for the indicated application and 125V DC control power. Spare contacts shall be wired to terminal blocks. Lockout relays shall annunciate to the DCS SOE whenever a relay target effects a lockout event.
Protective Relays. Electromechanical
1. Inspect relays for dust and foreign material. Clean accordingly.
2. Remove any rust or metal particles from disk or magnet poles with a magnet cleaner.
3. Inspect relay to make sure that disk does not rub and has good clearance between magnet poles.
4. Inspect relay connections, case connections, taps, screws, nuts, and bolts that are not pivotal joints for tightness.
5. Inspect relay for proper mechanical operation and damage to relay coils.
6. Clean all components of relay that touch when the relay is in normal position and part as the relay operates.
7. Test relay disconnected from the power and trip circuits, across the secondary of the CTs with primary de-energized, and complete a primary circuit test (includes CTs).
8. Test Overcurrent Relay for insulation resistance (do not perform on solid- state relays), zero check, induction disk pickup, time-current characteristics, target and seal-in operation and instantaneous.
9. Verify relay setting for conformance with the recommendations of the protective device coordination study. Calibrate and test for accuracy in accordance with the manufacturers’ recommendation.
Protective Relays. Magunden
(i) Installed SLS-1000 with RFL-6780: Permissive overreaching transfer trip (POTT) scheme with DTT using power line carrier equipment.
(ii) Installed SPCU-1A: Phase comparison scheme using microwave communication channel equipment.
(iii) Installed IBCG54: Directional ground overcurrent.
(iv) Installed SLLP-52A: Out-of-step tripping scheme.
(v) Installed BE1-32: Directional power.
(vi) Installed SFF-31/BE1-81: Intertie underfrequency separation scheme.