Sel 487b. SEL487B Bus Differential And Breaker Failure Relay, 44 OFF Single SEL-487B Protecting Double Bus Sections With Bus Tie Breaker Two Single SEL-487B Relays Protecting the Two Busbars in a Breaker-and-a-Half Busbar Configuration For stations with 10 to 21 terminals (Figure 18), use three separate SEL-487B relays and wire analog current inputs from A-, B-, and C-phases separately into each relay.. The SEL-487B-1 is a relay that provides bus current differential protection, circuit breaker failure protection, and backup overcurrent protection for busbar and breaker applications
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The SEL-421-7 SV Publisher provides full backup protection while the SEL-401 can provide basic phase overcurrent and breaker-failure protection in the absence SEL-487B-1 Busbar Differential, Overcurrent and Breaker Failure Protection Relay, Standard with Serial Communication Protocols(1), 8 Outputs, 7 Inputs(2), ACSELERATOR QuickSet® SEL-5030 Software(3), and Configurable Labels Part Number: 0 4 8 7 B 1 2 X X X Firmware Standard 1 Conformal Coat None X Conformally Coated Circuit Boards* 2 Power.
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The SEL-487B-1 is a relay that provides bus current differential protection, circuit breaker failure protection, and backup overcurrent protection for busbar and breaker applications The SEL-487B subscribes to da ta streams that are published by merging units, such as th e SEL-421-7 SV Publisher or SEL-401 Protection, Automation, and Control Merging Unit The Ethernet network and all traffic are fully duplicated with both copies operating in parallel.
SEL487B Bus Differential and Breaker Failure Relay PDF Computer. SEL-487B-1 Busbar Differential, Overcurrent and Breaker Failure Protection Relay, Standard with Serial Communication Protocols(1), 8 Outputs, 7 Inputs(2), ACSELERATOR QuickSet® SEL-5030 Software(3), and Configurable Labels Part Number: 0 4 8 7 B 1 2 X X X Firmware Standard 1 Conformal Coat None X Conformally Coated Circuit Boards* 2 Power. The SEL-421-7 SV Publisher provides full backup protection while the SEL-401 can provide basic phase overcurrent and breaker-failure protection in the absence
Sel487b1 5a PDF Relay Input/Output. Page 11 Use PRP to provide seamless recovery from any single for assignment as remote analog outputs 2 The relay records a wide range of system events with sampling rates as fast as 8 kHz, and as much as 24 seconds of data per COMTRADE compliant event report