Devices and description of this sample SLD
- 7RED 670: Main-1 Differential / Distance Protection
- 7SD522: Main-2 Differential / Distance Protection
- 7VK87: CB Fail Protection Relay with Backup DOC/DEF Protection for OHL bays1
- 7KE85: Disturbance Recorder
- 7SD82: Main-1/2 Cable Differential Protection
- 7UT82: Low Impedance Restricted Earth Fault Protection
- 7SJ82: CB Fail Protection Relay with Bac kup OC/EF Protection
- 7SS85: Main-1/2 Centralized busbar Protection
- MFM: Multifunction Meter with transducer outputs for NCC measurements and display for indication of measured values.
- 6MD85: Bay Controller Unit (BCU)
- 85X, 85R1, 85R2: 7PA27, Intertrip Receive Relay
- F85: SWT3000, Intertrip Unit for OHL & UGC Bays
Following shows the ANSI code and functional
- 21: Distance protection
- 25: Synchrocheck
- 50: Definite time overcurrent protection
- 50N: Definite time earth fault protection
- 50BF: Circuit-breaker failure protection
- 51: Inverse time overcurrent protection
- 51N: Inverse time earth fault protection
- 64: Sensitive ground-fault protection
- 67: Directional overcurrent protection
- 67N: Directional earth fault protection
- 68: Power swing blocking
- 79: Automatic reclosing
- 87: Differential protection
- 87B: Busbar differential protection
- FL: Fault Locator
Hi Saeed
please share the document with me
please share the document with me